Number of registered electric vehicles in each county, from Washington State's electric vehicle population data.
Number of registered electric vehicles in each county, from Washington State's electric vehicle population data.
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This chart counts registered electric vehicles by county using the electric vehicle population dataset published on data.gov, which covers 276,828 vehicles registered almost entirely in Washington State.
King County dominates with 136,693 vehicles, about half the total, followed by Snohomish (34,603), Pierce (22,684), Clark (17,029) and Thurston (10,044) counties.
Use it to compare EV adoption between counties for infrastructure planning, policy analysis or regional market sizing.
Who this is for
Data accuracy and methodology verified. Originally released February 28, 2026. Last updated October 16, 2026.
Number of registered electric vehicles in each county, from Washington State's electric vehicle population data.
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Spartera. "EV Registrations per County." Spartera Analytics Marketplace, 2026. https://marketplace.spartera.com/products/ev-registrations-per-county/be2933c8-9759-4cc9-ba0f-094642a9145a
Spartera. "EV Registrations per County." Spartera Analytics Marketplace, 2026, https://marketplace.spartera.com/products/ev-registrations-per-county/be2933c8-9759-4cc9-ba0f-094642a9145a.
Spartera. (2026). EV Registrations per County. Spartera Analytics Marketplace. https://marketplace.spartera.com/products/ev-registrations-per-county/be2933c8-9759-4cc9-ba0f-094642a9145a