Library
Incorporations of Washington Cities and Towns by Year
Updated 06/2010
Incorporations of Washington Cities and Towns by Year
There have been no new incorporations since 2003. See also MRSC's alphabetical list of incorporations.
| Date | City/Town, County | Notes 1 |
|---|---|---|
| 1854 | Steilacoom, Pierce | An Act to Incorporate the City of Steilacoom, Statutes of the Territory of Washington, 1854, First Session, pp. 455-458. 5/26/1890 reorganized |
| 1/23/1857 | Vancouver, Clark | An Act to Incorporate the City of Vancouver, Laws of the Territory of Washington, 1857, pp. 69-73. Passed 1-23-1857. An Act to Incorporate the City of Vancouver," Laws of the Territory of Washington, 1883, pp. 185-206. Approved October 27, 1883. An Act to Amend an Act Entitled "An Act to Incorporate the City of Vancouver," Approved October 27, 1883, Laws of the Territory of Washington, 1885-86, pp. 449-450. Approved 1-19-1886. About Vancouver's 150th Anniversary - City of Vancouver |
| 1/28/1859 | Olympia, Thurston | An Act to Incorporate the Town of Olympia, Acts of the Legislative Assembly of the Territory of Washington, 6th Regular Session, pp. 31-34. Passed 1-28-1859. An Act to Amend an Act to Incorporate the Town of Olympia, passed January 28, 1859, Local and Private Laws, Statutes of Washington Territory, 1862, p 42. Passed 1-26-1863.> An Act Amending the Charter of the Town of Olympia, Laws of the Territory of Washington, 1875, pp. 173-174. Approved 11-12-1875. An Act to Incorporate the City of Olympia, Laws of the Territory of Washington, 1883, pp. 109-129. Approved 11-28-1883. Ch. IX Sec 118 notes the change from the Town of Olympia to city of Olympia. An Act to Amend an Act Entitled," An Act to Incorporate the City of Olympia, Approved November 28, 1883, Laws of the Territory of Washington, 1885-86, pp. 419-424. Approved February 4, 1886. |
| 1/16/1860 | Port Townsend, Jefferson | An Act to Incorporate the City of Port Townsend, Jefferson County, Washington Territory, Acts of the Legislative Assembly of the Territory of Washington, 7th Regular Session, pp. 433-436. Passed 1-16-1860.
An Act to Amend an Act Entitled "An Act to Incorporate the City of Port Townsend, Jefferson County, Washington Territory," Session Laws of the Territory of Washington, 8th Regular Session, 1860. pp. 108-109. Passed 1-17-1861. An Act to Amend an Act to Incorporate the City of Port Townsend, Jefferson County, W.T.," Passed January 8, 1867, Statutes of the Territory of Washington, 1867-68. pp. 137. Approved 1-28-1868. An Act to Incorporate the Town of Port Townsend, Laws of the Territory of Washington, 1873 pp. 514-519. Approved 11-5-1873, effective first Monday in December, 1873. Article IX, Sec.3 "That all laws and parts of laws heretofore passed, in any manner relating to the incorporation of the town or city of Port Townsend be and the same are hereby repealed." An Act to Amend An Act Entitled "An Act to Incorporate the Town of Port Townsend," Approved Nov. 5, 1973, Laws of the Territory of Washington, 1875, pp. 187-188. Approved 11-9-1875. Note, Article 5, of an act entitled "an act to incorporate the city of Port Townsend, :approved Nov. 5, 1873 is repealed. Laws of the Territory of Washington, 1875, p. 188. Approved 10-26-1875. |
| 1/11/1862 | Walla Walla, Walla Walla | An Act to Incorporate the City of Walla Walla, Session Laws of the Territory of Washington, Ninth Regular Session, 1861-62. pp. 16-24. Passed 1-11-1862. An Act to Amend an Act Entitled An Act to Incorporate the City of Walla Walla Statutes of the Territory of Washington, Local Laws 1862, p. 52. Passed 1-20-1863. An Act to Amend an Act Entitled An Act to Incorporate the City of Walla Walla Statutes of the Territory of Washington 1867, pp 138-140. Approved 1-29-1868. An Act Amendatory of the City Charter of Walla Walla, Laws of the Territory of Washington, 1875, pp. 177-179. Approved 11-5-1875. An Act to Amend an Act Entitled An Act to Incorporate the City of Walla Walla," Passed January 29, 1868. Statutes of the Territory of Washington 1875 p. 179. Approved 11/12/1875. An Act to Incorporate the City of Walla Walla and to Particularly Define the Powers Thereof, All previous acts...and not herein reserved are hereby repealed. Laws of the Territory of Washington, 1883, pp. 270-288. Approved 11-28-1883, effective 1-1-1884. An Act to Amend an Act Entitled" An Act to Incorporate the City of Walla Walla and to Particularly Define the Powers Thereof," Statutes of the Territory of Washington, 1885-86, pp. 438-442. Approved 2-4-1886. |
| 1/15/1863 | Lewiston, Idaho (Part of Washington Territory | An Act to Incorporate the City of Lewiston, Statutes of the Territory of Washington, Local and Private Laws, pp. 43-51. Passed 1-14-1863. |
| 1/14/1865 | Town of Seattle, King | An Act to Incorporate the Town of Seattle, Statutes of the Territory of Washington 1864-65, pp 75-79. Approved 1-14-1865. An Act to Disincorporate the Town of Seattle, Statutes of the Territory of Washington, 1866-67, p. 181. n.d. Per Seattle City Clerk Website - Following submission of a petition by several of the Town's citizens, Seattle was unincorporated on January 28, 1867. |
| 11/25/1869 | Tumwater, Thurston | An Act to Incorporate the Town of Tumwater, Statutes of the Territory of Washington 1869, passed 12/2/1869. An Act to Amend an Act Entitled An Act to Incorporate the Town of Tumwater," Approved December 2, 1869, Statutes of the Territory of Washington 1875 pp. 174-177. Approved 11/12/1875. An Act to Disincorpate the Town of Tumwater, Statutes of the Territory of Washington 1877. Passed 11-06-1877. An Act to Incorporate the of Town of Tumwater, Laws of the Territory of Washington, 1883. Approved 10-27-1883. An Act to Incorporate the Town of Tumwater, Laws of the Territory of Washington, 1885-86, p431-438. Approved 2-3-1886. |
| 12/2/1869 | Seattle, King | An Act Incorporate the city of Seattle, Statutes of the Territory of Washington 1869, pp. 437-455. Approved 12-2-1869. See earlier incorporation |
| 11/29/1871 | Kalama, Cowlitz | An Act to Incorporate the City of Kalama, Statutes of the Territory of Washington 1871, pp. 142-152. Approved 11-29-1969. An Act to Disincorporate the City of Kalama, Statutes of the Territory of Washington, 1877. Passed 11/09/1877. 7/16/1890 reincorporated |
| 11/12/1875 | Tacoma, Pierce | An Act to Incorporate the City of Tacoma, Laws of the Territory of Washington, 1875. pp. 166-172. Approved 11-12-1875. An Act to Consolidate the Cities of Tacoma and New Tacoma, Under the Name Tacoma, Laws of the Territory of Washington, 1883 pp. 310-335. Approved 11-28-1883 |
| 11/14/1879 | Goldendale, Klickitat | An Act to Incorporate the City of Goldendale, Laws of the Territory of Washington, 1879, pp. 188-197. Approved 11-14-1879. An Act to Amend An Act Entitled "An Act to Incorporate the City of Goldendale," Approved Nov. 14, 1879. Laws of the Territory of Washington, 1881, pp. 166-167. Approved 11-20-1881. An Act to Amend An Act Entitled "An Act to Incorporate the City of Goldendale," Approved Nov. 14, 1879, Laws of the Territory of Washington, 1885-86, pp. 447-448. Approved 1-29-1886. |
| 11/5/1881 |
New Tacoma, Pierce Consolidated with Tacoma |
An Act to Confer a City Government Upon New Tacoma, Laws of the Territory of Washington, 1881, pp. 66-87. Approved 11-5-1881. An Act to Consolidate the Cities of Tacoma and New Tacoma, Under the Name Tacoma, Laws of the Territory of Washington, 1883. pp. 310-335. Approved 11-28-1883. |
| 11/29/1881 | Colfax, Whitman | An Act to Incorporate the City of Colfax, Laws of the Territory of Washington, 1881, pp. 157-166. Approved 11-29-1881. Incorporation amended by Legislative Act on 11/28/1883. |
| 11/10/1881 | Dayton, Columbia | An Act to Incorporate the City of Dayton, Laws of the Territory of Washington, 1881, pp. 87-114. Approved 11-10-1881. |
| 11/29/1881 | Spokane Falls/Spokane, Spokane | An Act to Incorporate the City of Spokane Falls, Laws of the Territory of Washington, 1881, pp. 148-156. Approved 11-29-1981. An Act Entitled An Act to Amend An Act to Incorporate the City of Spokane Falls, Laws of the Territory of Washington, 1883, pp. 350-382. Approved 11-28-1883. In 1890 "Falls" dropped from original name, Spokane Falls. |
| 11/25/1881 | Waitsburg, Walla Walla | An Act to Incorporate the City of Waitsburg, Laws of the Territory of Washington, 1881, pp 138-148. Approved 11-25-1881. Never reorganized; operates by Territory Charter. |
| 11/23/1883 | Chehalis, Lewis | An Act to Incorporate the City of Chehalis, Laws of the Territory of Washington, 1883, pp. 234-242. Approved 11-23-1883. |
| 11/28/1883 | Cheney, Spokane | An Act to Confer a City Government Upon Cheney, Laws of the Territory of Washington, 1883, pp 335-177. Approved 11-28-1883. An Act to Amend an Act Entitled An Act to Confer a City Government Upon Cheney," Approved November 28, 1883, Laws of the Territory of Washington, 1885-86, pp. 442-443. Approved 12-23-1885. |
| 11/26/1883 | Ellensburgh/Ellensburg, Kittitas | An Act to Incorporate the City of Ellensburgh, Laws of the Territory of Washington, 1883, pp 156-177. Passed 11-26-1883, effective Jan 1, 1884. An Act to Incorporate the City of Ellensburgh and to Define the Powers and Boundaries Thereof, Laws of the Territory of Washington, 1885-86, pp. 395-418. Approved 1-29-1886. Note: The city was originally named Ellensburgh, until the final -h was dropped under standardization pressure from the United States Postal Service and Board of Geography Names in 1894. |
| 11/20/1883 | La Conner, Skagit | An Act to Incorporate the City of La Conner, Laws of the Territory of Washington, 1883, pp 288-295. Passed 11-20-1883" An Act to Repeal An Act Entitled "An Act to Incorporate the City of La Conner, " Laws of the Territory of Washington, 1885-86, p. 449. Approved 1-29-1886 |
| 11/26/1883 | Montesano, Grays Harbor | An Act to Incorporate the City of Montesano, Laws of the Territory of Washington, 1883 pp. 263-270. Approved 11-26-1883 An Act to Incorporate the City of Montesano and to Particularly Define the Powers Thereof, Laws of the Territory of Washington, 1885-86, pp. 350-373. Approved 1-20-1886. |
| 11/24/1883 | Snohomish, Snohomish | An Act to Incorporate the City of Snohomish, Laws of the Territory of Washington, 1883 pp. 295-310. Approved 11-24-1883. Snohomish History - City of Snohomish |
| 11/28/1883 | Ainsworth, Franklin |
An Act to Incorporate the City of Ainsworth, Laws of the Territory of Washington, 1883 pp. 214-234. Approved 11-28-1883 An Act to Repeal An Act Entitled "An Act to Incorporate the City of Ainsworth, and Particularly Define the Powers Thereof," Laws of Washington Territory, 1885-86, p.424. Approved 1-19-1886. |
| 11/28/1883 | Sprague, Lincoln | An Act to Incorporated the City of Sprague and to Particularly Define the Powers There off, Laws of the Territory of Washington, 1883, pp. 242-263. Approved 11-28-1983 An Act to Amend Sections 18 and 20 of An Act Entitled "n Act to Incorporated the City of Sprague and to Particularly Define the Powers There off," Laws of the Territory of Washington, 1885-86, pp 450-451. Approved 1-15-1886. No record available of classification per letter dated 11/30/1950 by city attorney. |
| 11/23/1883 | Yakima City/Union Gap Yakima |
An Act to Incorporate the City of Yakima, Laws of the Territory of Washington, 1883 pp. 206-214. Approved 11-23-1883 Ch. 65 Laws of 1917 Amending Charter of City of Yakima and Changing Name to Union Gap, Approved by Governor 3-10-1917 - "An Act amending "An ct to to incorporate city of Yakima, approved November 23, 1883." |
| 11/24/1883 | Whatcom, Whatcom |
An Act to Incorporate the City of Whatcom, Laws of the Territory of Washington 1883, pp 137-155 Passed 11-24-83 An Act to Amend an Act Entitled An Act to Incorporate the City of Whatcom, Approved November 28, 1883, Laws of Washington Territory, 1885-86, p.425-431. Approved 2-3-1886. Sehome, renamed New Whatcom in 1888, merged with Whatcom in 1890. In 1901, the 'New' was dropped, leaving the consolidated city to be known as Whatcom. Consolidated with Bellingham in 1904 |
| 2/03/1886 | Centerville/Centralia, Lewis | An Act to Name the Town of Centerville in Lewis County to Centralia, Laws of the Territory of Washington, 1883, p. 415. Approved 11-21-1883. An Act to Incorporate the Town of Centralia, Laws of the Territory of Washington, 1885-86, pp. 444-447. Approved 2-3-1886. |
| 1/27/1886 | North Yakima, Yakima | An Act to Incorporated the City of North Yakima and to Particularly Define the Powers There off, Laws of the Territory of Washington, 1885-86, pp. 373-395. Approved 1-27-1886. Ch 6 Laws of 1917 Changing Name of City of North Yakima to Yakima. Approved by Governor 1-01-1917, effective 1-1-1918. |
| 2/03/1886 | Pomeroy, Garfield | An Act to Incorporate the City of Pomery, Laws of the Territory of Washington, 1885-86, pp. 324-350. Approved 2-3-1886. |
| 1/27/1886 | Yakima, Yakima | See North Yakima. Ch 6 Laws of 1917 Changing Name of City of North Yakima to Yakima. Approved by Governor 1/01/1917, effective 1-1-1918. |
| 1888 | Farmington, Whitman | 5/12/1890 Reorganized |
| 2/22/1888 | Wynooche, Chehalis2 | 6/08/1925 disincorporated |
| 5/07/1890 | Winlock, Lewis | Reorganized |
| 5/08/1890 | Elma, Grays Harbor | Reorganized |
| 5/19/1890 | Kelso, Cowlitz | |
| 5/19/1890 | Oakesdale, Whitman | Reorganized |
| 9/27/1890 | South Bend, Pacific | |
| 5/12/1890 | Aberdeen, Grays Harbor | |
| 7/02/1890 | Assotin City/Asotin, Asotin | An Act to Change the Name of the Town of Assotin City, in Asotin County to Asotin, Laws of Washington Territory, 1885-86, p.464. Approved 2-4 1886. |
| 4/21/1890 | Ballard, King | Consolidated with Seattle 8/04/1908. |
| 5/20/1890 | Blaine, Whatcom | |
| 5/26/1890 | Buckley, Pierce | |
| 1890 | 6/20/1890 | Castle Rock, Cowlitz |
| 5/19/1890 | Colton, Whitman | |
| 6/07/1890 | Colville, Stevens | |
| 5/10/1890 | Cosmopolis, Grays Harbor | |
| 6/09/1890 | Davenport, Lincoln | |
| 5/26/1890 | Denver, Spokane | No further record; no listed as incorporated |
| 8/14/1890 | Edmonds, Snohomish | |
| 5/13/1890 | Fairhaven, Whatcom | On 11/04/1903 consolidated with Fairhaven and New Whatcom to form Bellingham. Bellingham Centennial Celebration- Center for Pacific Northwest Studies, Western Washington University |
| 6/20/1890 | Garfield, Whitman | Reorganized |
| 5/21/1890 | Hoquiam, Grays Harbor | |
| 12/16/1890 | Ilwaco, Pacific | |
| 5/28/1890 | Kent, King | |
| 6/18/1890 | Medical Lake, Spokane | |
| 7/05/1890 | Mount Vernon, Skagit | |
| 5/07/1890 | New Whatcom, Whatcom | Fairhaven and New Whatcom consolidated to form Bellingham on 11/04/1903. |
| 5/01/1890 | Orting, Pierce | Reorganized |
| 5/12/1890 | Palouse, Whitman | Reorganized; Original name was Palouse City. |
| 6/11/1890 | Port Angeles, Clallam | |
| 5/09/1890 | Pullman, Whitman | Reincorporated |
| 8/19/1890 | Puyallup, Pierce | |
| 7/17/1890 | Ritzville, Adams | |
| 6/18/1890 | Rockford, Spokane | |
| 4/26/1890 | Roslyn, Kittitas | Reorganized |
| 5/17/1890 | Ross Park, Spokane | Reorganized. No record as to disposition. |
| 9/01/1890 | Ruby, Okanogan | No longer city. No record of disincorporation. |
| 5/23/1890 | Shelton, Mason | |
| 9/04/1890 | Sidney, Kitsap | Name changed to Port Orchard by Leg. Act Ch. 21 Laws of 1903. |
| 8/23/1890 | Spangle, Spokane | Reorganization |
| 5/12/1890 | Tekoa, Whitman | Reorganized |
| 5/23/1890 | Uniontown, Whitman | Reorganized |
| 5/12/1890 | Waterville, Douglas | |
| 8/11/1890 | Wilbur, Lincoln | |
| 5/19/1891 | Anacortes, Skagit | |
| 6/15/1891 | Auburn, King | Original name was Slaughter. |
| 3/19/1891 | Hamilton, Skagit | |
| 12/17/1891 | Kettle Falls, Stevens | |
| 3/16/1891 | Lynden, Whatcom | |
| 3/20/1891 | Marysville, Snohomish | |
| 7/29/1891 | Ocosta, Grays Harbor | 11/25/1932 disincorporated |
| 9/03/1891 | Pasco, Franklin | |
| 3/19/1891 | Sedro, Skagit | Vanished after a flood in 1894 and a fire in 1900.3 |
| 6/15/1891 | Slaughter, King | Name changed to Auburn by Leg. Act, Laws of 1893, Page 39. |
| 6/18/1891 | Sumas, Whatcom | |
| 2/07/1891 | Sumner, Pierce | |
| 5/15/1891 | Sedro-Woolley, Skagit | |
| 4/29/1892 | Gilman, King | Name changed to Issaquah by Leg. Act, Ch. 6 Laws of 1899 on 2/02/1899. |
| 4/29/1892 | Issaquah, King | Original name was Gilman. |
| 4/09/1892 | Latah, Spokane | |
| 4/27/1892 | Pataha City, Garfield | No record of disposition; briefly known as Waterstown and Favorsburg.3 |
| 10/10/1892 | Toledo, Lewis | |
| 8/19/1893 | Charleston, Kitsap | Consolidated with Bremerton on 5/14/1927. |
| 1/12/1893 | Columbia, King | Annexed to Seattle on 3/18/1909. |
| 5/04/1893 | Everett, Snohomish | |
| 8/19/1893 | Port Orchard, Kitsap | |
| 1/07/1893 | Wenatchee, Chelan | |
| 3/23/1894 | Rosalia, Whitman | |
| 12/18/1895 | Hillyard, Spokane | Annexed to City of Spokane. |
| 4/24/1896 | Elberton, Whitman | Disincorporated as of 11/14/1966. |
| 7/01/1898 | Northport, Stevens | |
| 12/21/1898 | Sedro-Woolley, Skagit | |
| 3/02/1899 | Prosser, Benton | |
| 5/22/1900 | Republic, Ferry | |
| 10/15/1901 | Bremerton, Kitsap | |
| 9/06/1901 | Renton, King | |
| 6/16/1902 | Burlington, Skagit | |
| 5/07/1902 | Chelan, Chelan | |
| 8/14/1902 | Clarkston, Asotin | |
| 2/24/1902 | Cle Elum, Kittitas | |
| 4/17/1902 | Harrington, Lincoln | |
| 2/04/1902 | Lind, Adams | Name changed to Vader by Leg. Act, Ch. 181, laws of 1913 on 3/25/1913. |
| 9/25/1902 | Odessa, Lincoln | |
| 9/26/1902 | Sunnyside, Yakima | |
| 4/28/1902 | West Seattle, King | Annexed to Seattle on 3/18/1909. |
| 4/20/1903 | Creston, Lincoln | |
| 5/20/1903 | Arlington, Snohomish | |
| 11/04/1903 | Bellingham, Whatcom | Bellingham Centennial - Center for Pacific Northwest Studies, Western Washington University |
| 2/04/1903 | Chewelah, Stevens | |
| 12/21/1903 | Granite Falls, Snohomish | |
| 1/07/1903 | Monroe, Snohomish | |
| 4/16/1903 | Newport, Pend Oreille | |
| 3/13/1903 | Prescott, Walla Walla | |
| 4/14/1903 | Reardan, Lincoln | |
| 6/09/1903 | Snoqualmie, King | |
| 1/06/1903 | South Park, King | Annexed to Seattle on 3/18/1909. |
| 2/09/1903 | Springdale, Stevens | |
| 10/21/1903 | Stanwood, Snohomish | |
| 11/14/1903 | Washtucna, Adams | |
| 5/08/1903 | Wilson Creek, Grant | |
| 1/13/1904 | George Town/Georgetown, King | Consolidated with City of Seattle on 6/25/1910. |
| 2/01/1904 | Almira, Lincoln | |
| 2/05/1904 | Kennewick, Benton | |
| 3/10/1904 | St. John, Whitman | |
| 5/21/1904 | Lakeside, Chelan | Election to consolidate with Chelan held 1/10/56. Filed with Sec of State1/21/1957 |
| 11/11/1904 | Cashmere, Chelan | |
| 2/11/1905 | Endicott, Whitman | |
| 3/03/1905 | Fairfield, Spokane | |
| 10/12/1905 | Kirkland, King | |
| 11/07/1905 | Mabton, Yakima | |
| 12/18/1905 | Oakville, Grays Harbor | |
| 7/14/1905 | South Seattle, King | Annexed to Seattle on 3/18/1909. |
| 9/18/1905 | Starbuck, Columbia | |
| 6/28/1905 | Sultan, Snohomish | |
| 1/12/1906 | Little Falls, Lewis | |
| 1/12/1906 | Vader, Lewis | Name changed from Little Falls by Legislative Act; Ch. 181 Laws if 1913, 3/25/1913. |
| 3/09/1906 | Pe Ell, Lewis | |
| 3/27/1906 | Woodland, Cowlitz | |
| 6/18/1906 | Camas, Clark | |
| 7/2/1906 or 7/05/1906 | Southeast Seattle/South East Seattle, King | Annexed to Seattle on 3-18-1909 or 1-7-1907. |
| 7/24/1906 | Tenino, Thurston | |
| 9/05/1906 | Leavenworth, Chelan | |
| 11/10/1906 | Ruston, Pierce | |
| 10/11/ 1906 | Ravenna, King | Annexed to Seattle on 3/18/1909 or 1/15/1907. |
| 2/18/1907 | Cathlamet, Wahkiakum | |
| 5/10/1907 | Coulee City, Grant | |
| 3/19/1907 | Ferndale, Whatcom | |
| 3/06/1907 | Hartline, Grant | |
| 7/31/1907 | Hatton, Adams | |
| 10/11/1907 | Index, Snohomish | |
| 5/31/1907 | Kahlotus, Franklin | |
| 9/04/1907 | Milton, Pierce | |
| 10/29/1907 | Okanogan, Okanogan | |
| 12/18/1907 | Poulsbo, Kitsap | Excerpts from Centennial Web Site( |
| 3/27/1907 | Quincy, Grant | |
| 8/06/1907 | Raymond, Pacific | |
| 12/16/1907 | Stevenson, Skamania | |
| 4/29/1907 | Toppenish, Yakima | |
| 5/15/1907 | Waverly, Spokane | |
| 6/03/1907 | White Salmon, Klickitat | |
| 11/11/1908 | Conconully, Okanogan | |
| 9/26/1908 | Cunningham, Adams | 10/01/1924 disincorporated |
| 6/24/1908 | Deer Park, Spokane | |
| 8/07/1908 | Oroville, Okanogan | |
| 1/16/1908 | Roy, Pierce | |
| 6/23/1908 | Tukwila, King | |
| 9/16/1908 | Wapato, Yakima | |
| 12/04/1908 | Washougal, Clark | |
| 7/31/1908 | Yacolt, Clark | |
| 4/14/1909 | Bothell, King | Excerpts from Bothell Centennial Web Page |
| 5/08/1909 | Concrete, Skagit | |
| 10/28/1909 | Eatonville, Pierce | |
| 6/21/1909 | Ephrata, Grant | |
| 2/10/1909 | Friday Harbor, San Juan | |
| 9/21/1909 | Grandview, Yakima | |
| 9/28/1909 | Granger, Yakima | |
| 8/27/1909 | La Center, Clark | |
| 5/08/1909 | Lyman, Skagit | |
| 12/20/1909 | Malden, Whitman | |
| 3/12/1909 | North Bend, King | North Bend Centennial |
| 8/10/1909 | Pacific, King | |
| 8/26/1909 | Ridgefield, Clark | |
| 6/05/1909 | Skykomish, King | |
| 2/17/1909 | South Prairie, Pierce | |
| 8/13/1909 | Twisp, Okanogan | |
| 7/24/1909 | Wilkeson, Pierce | |
| 3/04/1910 | Albion, Whitman | |
| 4/20/1910 | Coupeville, Island | |
| 4/29/1910 | Brewster, Okanogan | |
| 3/21/1910 | Bridgeport, Douglas | |
| 7/07/1910 | Bucoda, Thurston | |
| 11/28/1910 | Connell, Franklin | |
| 9/16/1910 | Gold Bar, Snohomish | |
| 1/11/1910 | Ione, Pend Oreille | |
| 10/22/1910 | Lamont, Whitman | |
| 10/18/1910 | Marcus, Stevens | |
| 2/16/1910 | McMurray, Skagit | Disincorporated 10/31/1922 |
| 5/31/1910 | Othello, Adams | |
| 6/16/1910 | Warden, Grant | |
| 1/07/1911 | Krupp, Grant | |
| 2/23/1911 | Mansfield, Douglas | |
| 5/13/1911 | Metaline Falls Pend Oreille | |
| 2/11/1911 | Omak, Okanogan | |
| 8/28/1911 | South Cle Elum, Kittitas | |
| 01/05/1911 | Zillah, Yakima | |
| 12/31/1912 | Carnation, King | Name changed from Tolt to Carnation by Ch. 18 Laws of 1917; finally to Carnation on 10/29/1951. |
| 3/26/1912 | Du Pont, Pierce | Election to dissolve as of 11/02/1926. Reincorporated 5/11/1951 |
| 12/06/1912 | Nooksack, Whatcom | |
| 12/31/1912 | Redmond, King | |
| 12/31/1912 | Tolt, King | Name changed to Carnation under Ch. 18 Laws of 1917 and back to Tolt on 5/03/1928; finally back to Carnation on 10/29/1951. |
| 1/07/1913 | Duvall, King | |
| 2/01/1913 | Enumclaw, King | |
| 2/26/1913 | Langley, Island | |
| 11/21/1913 | Napavine, Lewis | |
| 5/01/1913 | Pateros, Okanogan | |
| 8/15/1913 | Ravensdale, King | No record of disposition. |
| 12/22/1913 | Riverside, Okanogan | |
| 10/31/1913 | Sequim, Clallam | |
| 1/07/1914 | Morton, Lewis | |
| 6/26/1914 | Westport, Grays Harbor | |
| 5/14/1915 | Oak Harbor, Island | |
| 2/19/1917 | Le Crosse, Whitman | |
| 4/03/1919 | Selah, Yakima | |
| 6/09/1919 | Soap Lake, Grant | |
| 2/13/1920 | Molson, Okanogan | Incorporation was declared invalid by order of Supreme Court on 10/06/1921. |
| 4/27/1921 | Moxee City, Yakima | Dropped name to Moxee upon adopting the OMC. |
| 5/04/1921 | Naches, Yakima | |
| 2/28/1922 | East Stanwood, Snohomish | Consolidated with Stanwood 5/26/1961. |
| 1/18/1922 | Long Beach, Pacific | |
| 4/18/1924 | Bingen, Klickitat | |
| 2/14/1924 | Longview, Cowlitz | |
| 3/12/1924 | Winthrop, Okanogan | |
| 12/10/1924 | Yelm, Thurston | |
| 9/19/1925 | Fircrest, Pierce | |
| 12/16/1927 | Tonasket, Okanogan | |
| 3/15/1927 | Cusick, Pend Oreille | |
| 10/26/1927 | Millwood, Spokane | |
| 5/04/1929 | Everson, Whatcom | |
| 12/08/1930 | Rock Island, Douglas | |
| 12/09/1931 | Kittitas, Kittitas | |
| 3/11/1935 | East Wenatchee, Douglas | |
| 11/06/1935 | Grand Coulee, Grant | |
| 4/15/1935 | Nespelem, Okanogan | |
| 6/25/1935 | North Bonneville, Skamania | |
| 9/19/1938 | Moses Lake, Grant | |
| 6/05/1942 | Tieton, Yakima | |
| 1/09/1943 | McCleary, Grays Harbor | |
| 4/25/1944 | Entiat, Chelan | |
| 7/14/1945 | Benton City, Benton | |
| 10/15/1945 | Darrington, Snohomish | |
| 8/28/1945 | Forks, Clallam | |
| 1/19/1946 | College Place, Walla Walla | |
| 8/27/1946 | Forest City, Kitsap | Dissolved on 4/25/1950 by the order of Superior Court of Kitsap County. |
| 7/12/1946 | Gig Harbor, Pierce | |
| 1/23/1946 | Harrah, Yakima | |
| 4/17/1947 | Elmer City, Okanogan | |
| 7/30/1947 | Houghton, King | Consolidated with Kirkland on 7/31/1968. |
| 5/08/1947 | Mukilteo, Snohomish | |
| 10/23/1947 | Rainier, Thurston | |
| 9/18/1947 | Winslow, Kitsap | |
| 9/13/1948 | Carbonado, Pierce | |
| 10/06/1948 | Metaline, Pend Oreille | |
| 1/02/1948 | Mossyrock, Lewis | |
| 2/28/1949 | Bonny Lake, Pierce | |
| 8/04/1950 | Electric City, Grant | |
| 6/18/1951 | Battleground, Clark | |
| 3/31/1953 | Bellevue, King | |
| 3/31/1953 | Clyde Hill, King | |
| 6/08/1953 | Normandy Park, King | |
| 6/08/1954 | Beaux Arts, King | |
| 11/30/1954 | Mountlake Terrace, Snohomish | |
| 6/28/1955 | Airway Heights, Spokane | |
| 8/22/1955 | Algona, King | |
| 8/22/1955 | Hunts Point, King | |
| 8/19/1955 | Medina, King | |
| 6/23/1955 | Mesa, Franklin | |
| 6/17/1955 | West Richland, Benton | |
| 9/14/1956 | East Redmond, King | Dissolution of East Redmond by order of State Supreme Court on 3/20/1964. |
| 2/11/1957 | Fife, Pierce | |
| 1/17/1957 | Westlake, Grant | 7/05/1972 disincorporated |
| 6/03/1958 | Mattawa, Grant | |
| 12/10/1958 | Richland, Benton | Incorporated 4/12/1910; disincorporated 12/04/1948; Reincorporated12/10/1958 |
| 2/26/1958 | Woodway, Snohomish | |
| 2/19/1959 | Black Diamond, King | |
| 2/26/1959 | Coulee Dam, Okanogan | |
| 6/17/1959 | Des Moines, King | |
| 4/20/1959 | Lynnwood, Snohomish | |
| 06/24/1959 | Yarrow Point, King | |
| 11/29/1960 | Lake Stevens, Snohomish | |
| 7/19/1960 | Mercer Island City, King | Mercerversary- 50th Anniversary 2010 |
| 9/01/1960 | Mercer Island Town, King | Annexed by Mercer Island City on 6/26/1970. |
| 7/18/1961 | George, Grant | |
| 6/20/1961 | Lake Forest Park, King | Celebrating 50 Years (1961— 2011) |
| 2/14/1962 | Royal City, Grant | |
| 2/11/1965 | Brier, Snohomish | |
| 12/05/1966 | Lacey, Thurston | |
| 11/18/1970 | Ocean Shores, Grays Harbor |
|
| 9/30/1983 | Mill Creek, Snohomish | |
| 2/28/1990 | Federal Way, King | |
| 2/28/1990 | SeaTac, King | |
| 2/28/1993 | Burien, King | |
| 3/31/1993 | Woodinville, King | |
| 9/30/1994 | Newcastle, King | Name changed from Newport Hills. |
| 9/30/1994 | Newport Hills, King | Name changed to Newcastle. |
| 8/31/1995 | Shoreline, King | |
| 8/31/1995 | University Place, Pierce | |
| 2/28/1996 | Edgewood, Pierce | |
| 2/28/1996 | Lakewood, Pierce | |
| 8/31/1997 | Maple Valley, King | |
| 8/31/1997 | Covington, King | |
| 8/31/1998 | Kenmore, King | |
| 8/31/1999 | Sammamish, King | |
| 8/31/2001 | Liberty Lake, Spokane | |
| 3/31/03 | Spokane Valley, Spokane |
1. Notes
- All dates are date filed with the Secretary of State. Prior to 1889, cities and towns were created by the Territorial Legislature
- Established as Chehalis County by territorial legislature in 1854. In 1907, the state legislature approved division of the county into two counties, Chehalis County and Grays Harbor County. The state supreme court ruled against the act, and in 1915 the legislature changed the name of the whole to Grays Harbor County. Information from private author, see foot three.
- Information from Washington State Place Names written by James H. Phillips.
- Many of the Citations to pre 1889 incorporations were provided by Steve Lundin, former Senior Counsel for the Washington State House of Representatives and author of The Closest Governments to the People: A Complete Reference Guide to Local Government in Washington, Washington State University, 2007.
- Information on Seattle Annexation of small cities is supplemented by Quick Facts about the City of Seattle - Seattle City Clerk's Office
- In 1979 archives were managed by OFM. An intern created a list of cities and towns based on records filed with the state. The term reorganized or reincorporated refers to provisions of Chapter VII of the Session Laws, 1889-1891.

