| Capitolimpact: Map of Washington: Shows the locations of Washington's counties. |
| Health Districts and Departments: Map directory linking to county health departments and districts throughout the state of Washington. |
| Population Density 2000: Population density for Washington counties in 2000. |
| Profiles of Counties in Washington State: Provided by the Municipal Research & Services Center (MRSC), a non-profit, independent organization, whose mission is "working together for excellence in local government through professional consultation, research and information services." |
| Profiles of Washington Counties: Information covering county demographics and population changes, employment and wages, county revenues and expenditures, public assistance programs, and schools. |
| Washington Counties Insurance Fund: Provides information about employee benefit plans to counties willing to group together to obtain lower cost insurance. |
| Washington Public Utility District Association: Portal to the community-owned providers of water, electricity, wholesale telecommunications and sewer services in Washington Counties. |
| Washington State Association of Counties (WSAC): A non-profit, non-partisan organization that represents Washington's counties before the state legislature, the state executive branch, and regulatory agencies. |
| Washington State Association of County Officials: Provides government directories listing county officials and their addresses, phone numbers and email addresses. |
| Washington State County Population Projections: Projections for 1990 to 2020 by age and sex for Washington counties, developed for the Growth Management Act. |
| Washington State Newspapers by County: Information for advertisers including circulation and markets, strengths, major advertisers and regional employers, and relevant contact and deadline information from the Washington Newspaper Publishers Association. |
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