Congressional district boundaries for purposes of election. Boundaries are based on the 2021 redistricting of Washington State as a result of the 2020 census and the adopted final amended plan (HCR 4407) on February 8, 2022.

This map displays the percentage of voter turnout by precinct for the general elections 2010-2019 in King County, Washington. The data for this map was complied from the King County Elections Canvass results and the historical precinct boundaries for the corresponding years. The data is grouped by year into six percentage ranges: 0-30%, 31-40%, 41-50%, 51-60%, 61-70%, and 71%-100%. The lighter colors represent lower turnout and the darker colors represent higher turnout. The percent turnout equals number of ballots counted divided by the number of registered voters multiplied by 100.

This web map displays data from the voter registration database as the percent of registered voters by census tract in King County, Washington.

The data for this web map is compiled from King County Elections voter registration data for the years 2013-2019. The total number of registered voters is based on the geo-location of the voter's registered address at the time of the general election for each year. The eligible voting population, age 18 and over, is based on the estimated population increase from the US Census Bureau and the Washington Office of Financial Management and was calculated as a projected 6 percent population increase for the years 2010-2013, 7 percent population increase for the years 2010-2014, 9 percent population increase for the years 2010-2015, 11 percent population increase for the years 2010-2016 & 2017, 14 percent population increase for the years 2010-2018 and 17 percent population increase for the years 2010-2019. The total population 18 and over in 2010 was 1,517,747 in King County, Washington. The percentage of registered voters represents the number of people who are registered to vote as compared to the eligible voting population, age 18 and over.

The voter registration data by census tract was grouped into six percentage range estimates: 50% or below, 51-60%, 61-70%, 71-80%, 81-90% and 91% or above with an overall 84 percent registration rate. In the map the lighter colors represent a relatively low percentage range of voter registration and the darker colors represent a relatively high percentage range of voter registration. PDF maps of these data can be viewed at King County Elections downloadable voter registration maps.

The 2019 General Election Voter Turnout layer is voter turnout data by historical precinct boundaries for the corresponding year. The data is grouped into six percentage ranges: 0-30%, 31-40%, 41-50% 51-60%, 61-70%, and 71-100%. The lighter colors represent lower turnout and the darker colors represent higher turnout.

The King County Demographics Layer is census data for language, income, poverty, race and ethnicity at the census tract level and is based on the 2010-2014 American Community Survey 5 year Average provided by the United States Census Bureau. Since the data is based on a survey, they are considered to be estimates and should be used with that understanding. The demographic data sets were developed and are maintained by King County Staff to support the King County Equity and Social Justice program. Other data for this map is located in the King County GIS Spatial Data Catalog, where data is managed by the King County GIS Center, a multi-department enterprise GIS in King County, Washington.

King County has nearly 1.3 million registered voters and is the largest jurisdiction in the United States to conduct all elections by mail. In the map you can view the percent of registered voters by census tract, compare registration within political districts, compare registration and demographic data, verify your voter registration or register to vote through a link to the VoteWA, Washington State Online Voter Registration web page.

For more information about this layer please see the GIS Data Catalog.Water districts of King County.

This data layer describes the boundaries of combined water & sewer utility districts. This data does not describe water service or sewer service areas of the districts.

The Leafline Trails Network map displays the routes of regionally significant off-road, multi-purpose trails within King County. Numerous trail-user amenities are also shown on the map, such as public parking at trailheads and along the trail routes, nearby transit facilities, restrooms, and public parks. Highways, arterial streets, cities, and major landmarks are identified for easy location of trails and for general reference.The reverse side of the map includes a colorful description in text and photographs of the special characteristics of many of the primary regional trails. Additional text about the Leafline Trails Network is provided to enhance users' access to and enjoyment of the wealth of recreational opportunities provided by the Leafline Regional Trails in King County.

The map was developed, produced, and published by the King County Parks and Recreation Division with cartography and design by Parks and Recreation Division GIS and King County GIS Center Spatial Services.Revised May 2021.

Regional Transit Authority District encompassing urban King County

This data layer describes the 2012 Legislative Districts after redistricting due to the 2010 census. These boundaries were in effect from 2012 – 2021. It shows the districts exclusive of major water bodies.

A patrol district consists of one or more reporting districts (areas). A patrol district is the primary level of geography defined/used by the reactive patrol portion of the King County Sheriff's Office.

This data layer describes school districts within King County.

This data layer describes the fire protection districts in King County

For more information about this layer please see the GIS Data Catalog.This data layer describes the boundaries, name, and number of voters of voting precincts of King County (KCC 1.12.010). Current precincts reflect the precinct boundary and name changes due to 2022 redistricting and the 2024 Remedial Map 3B.

This data layer describes the boundaries, name, and number of voters of voting precincts of King County for 2021.

For more information about this layer please see the GIS Data Catalog.Land properties, mostly parcels, where King County Parks and Recreation Division has ownership, management, easement or other interests.

This data layer describes the boundaries, name, and number of voters of voting precincts of King County for 2016.

Depicts the boundaries of the Washington State Congressional Districts within King County, reflecting updates based on the 2002 redistricting of Washington state.

This data layer describes the 2012 King County Council Districts after redistricting due to the 2010 census. These boundaries were in effect from 2012 – 2021. It shows the districts exclusive of major water bodies and includes contact information for each of the 9 council members.

This data layer describes the boundaries, name, and number of voters of voting precincts of King County for 2014

This data layer describes the 2022 King County Council Districts after the 2021 redistricting. It shows the districts exclusive of major water bodies and includes contact information for each council member.

The data was created for precinct analysis and display and reflects the precinct boundary changes due to 2023 redistricting and/or the annual precinct balancing project in the spring of each year. Data can be joined with election results in e-canvass to map election results. This data layer describes the boundaries, name, and number of voters of voting precincts of King County for 2023.