Voter turnout and registration maps

Percentage of voter turnout for general elections by precinct

• 2023 
• 2022 
• 2021 
• 2020 
• 2019 
• 2018 
• 2017 
• 2016 
• 2015 
• 2014 
• 2013 
• 2012 
• 2011 
• 2010 

How the percentage is calculated

Turnout percentage = Ballots counted / Active registered voters

Percentage of voter turnout by area or precinct for general elections

The interactive map shows the percentage of voter turnout by area or precinct for the 2010-2023 general elections. The map shows turnout by year for all voting precincts. The lighter colors represent lower percentage turnout, while the darker colors represent higher percentage turnout.

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Percentage of registered voters of eligible voting age (18 and up) by census tract

2020 Census Tracts

• 2023
• 2022
• 2021 
• 2020 

2010 Census Tracts

• 2019 
• 2018 
• 2017 
• 2016 
• 2015 
• 2014 
• 2013 

Maps show the percent of registered voters by census tract. They represent the number of people registered to vote as compared to the voting population, age 18 and over.

Methodology

Total number of registered voters based on registered address at the time of the annual general election.

In 2020, the total King County population for age 18 and over was 1,813,470. Estimated population growth used in these projections are from the US Census Bureau and the Washington Office of Financial Management using the 2020 census tracts.

• 2020-2023: 3.44% population increase
• 2020-2022: 2.12% population increase
• 2020-2021: 0.77% population increase

In 2010, the total King County population for age 18 and over was 1,517,747. Estimated population growth used in these projections are from the US Census Bureau and the Washington Office of Financial Management using the 2010 census tracts.

• 2010-2019: 17% population increase
• 2010-2018: 14% population increase
• 2010-2016 & 2017: 11% population increase
• 2010-2015: 9% population increase
• 2010-2014: 7% population increase
• 2010-2013: 6% population increase

Percentage of registered voters by census tract

The interactive map shows the percentage of registered voters by census tracts in 2020 for the 2020-2023 general elections and percent of registered voters by census tracts in 2010 for the 2013-2019 general elections. King County has an overall 80 percent registration rate, the lighter colors represent a relatively low percent registered; the darker colors represent a relatively high percent registered.

View Interactive Map