Municipal Incorporation
Contents
Introduction
Under Washington law, an area can incorporate as a city if it has a minimum of 1500 inhabitants. If within five air miles of the boundaries of a city with a population of 15,000 or more, the area must have a minimum of 3000 inhabitants. The basic procedure to incorporate is set out in Chapter 35.02 RCW - Incorporation Proceedings, and it includes a petition requirement, review by a boundary review board or the county legislative body in counties without a board, and an election. If the voters approve the proposed incorporation, a primary election to nominate candidates for city council (and, in mayor-council cities, a mayor) and then an election to select the city council must be held. The new city must officially incorporate, at a date set by the initial city council, within 360 days of the incorporation election.
Fifteen cities have incorporated in Washington State since 1990. During the two decades prior to 1990, only one city had incorporated in the state. This recent surge in incorporation activity, which also includes a number of failed incorporation attempts, can be attributed, to a great extent, to the rapid population growth in the state over the past decade, particularly in the Puget Sound region where all of the recent incorporations have taken place. The increasing urbanization and sprawl that has resulted has caused many communities to consider incorporation as a means of exercising local control over community character and destiny.
MRSC has responded to this incorporation boom in part by preparing two publications to aid communities in deciding whether to incorporate, in navigating the process of incorporation, and in establishing a viable, functioning city government. See the Municipal Incorporation Guide (
) and The New City Guide (currently under revision).
Legal References
Statutes
- Washington State Const. art. 11, § 10 - Incorporation of Municipalities. This constitutional provision establishes the basic authority for cities and towns to incorporate and for the state legislature to enact laws to govern the process of incorporation.
- Ch. 35.02 RCW - Incorporation Proceedings. This chapter contains the basic statutory procedures for incorporation as a city in Washington State. It also establishes the legal authority and power of a city during the "interim period," the period between the election of the initial city council and the official date of incorporation. In addition, it addresses issues relating to the continued provision of municipal services after incorporation.
- Ch. 36.93 RCW - Local Government Organization - Boundaries - Review Boards. Proposed incorporations are "reviewed" by a boundary review board in counties in which boards have been established. Currently, 20 of the state's 39 counties have boundary review boards. This RCW chapter provides the procedures and guidelines for boundary review board review of incorporations and of other processes, such as annexations, that alter municipal boundaries.
Court Decisions
- Vashon Island v. Boundary Review Bd., 127 Wn.2d 759 (1995). The state supreme court concluded that there is no constitutionally protected right to have an incorporation petition considered under the law existing at the time a notice of intent to seek incorporation was filed with a boundary review board.
Documents
Miscellaneous Incorporation Documents
- Annexation/Incorporation Process, Washington State Boundary Review Board for Spokane County
- Cities and Towns, State of Washington Dates of Incorporation, Disincorporation, and Changes of Classification
- Incorporation Processes and Procedures, Boundary Review Board for King County
- Incorporation Petition (
), proposed City of Sammamish
- Municipal Incorporation Guide (
), MRSC Report No. 21, Revised, 06/2011 - This publication summarizes the statutory incorporation procedures and addresses some of the pros and cons of incorporation.
- The New City Guide, Report No. 25, 02/2002 (currently under revision) - View in HTML or view/download in Adobe Acrobat format (
)
- 2005 Study on Land Use and Local Government Finance (
), Washington State Office of Financial Management, 12/2005 - A study of local government finances in the context of the Growth Management Act, with a specific focus on the impact of annexations and incorporations
Incorporation Feasibility Studies
- Birch Bay Incorporation Feasibility Study (
), Berk & Associates, 03/2008
- City of Fairwood Incorporation Study (
), Final Report, Henderson, Young & Co., 04/13/2009
- Analysis of the Financial Feasibility of the Proposed City of Fairwood (
), Final Report, Berk & Associates, 06/17/2006
- Liberty Lake Incorporation
- Liberty Lake Incorporation Study (
), from the Spokane County Boundary Review Board website
- Liberty Lake New City Summary (
), from the Spokane County Boundary Review Board website, 11/2000
- Liberty Lake Incorporation Study (
- Spokane Valley Incorporation
- Spokane Valley Incorporation Study (
), from the Spokane County Boundary Review Board website
- Spokane Valley New City Summary (
), from the Spokane County Boundary Review Board website, 05/2002
- Spokane Valley New City Interim Period Schedule of Actions (
), 01/15/2004
- Spokane Valley Incorporation Study (
Related MRSC Resources

