County Maps US

Franklin County, Washington

A county in Washington, ranked 14 of 39 by population.

CountyFIPS 53021

Within Washington
Franklin County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Pasco, the county seat, located via the 2025 Census Gazetteer.

Download SVGFull Washington map downloads

Population
102,612
+5,475 (+5.6%) since 2020
Land area
1,242
square miles. A further 1.8% of the total area is water
Population density
82.6
people per square mile, computed rather than published
County seat
Pasco
Seat of county government.
Established
1883
142 years ago
Largest city
Pasco city
Population 82,848.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Franklin County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Franklin County, Washington from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 536 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Franklin County ranks

Position among the 39 counties of Washington, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WashingtonNationally
Population102,61214th of 39611th of 3,144
Land area1,242 sq mi27th of 39489th of 3,144
Population density82.6 per sq mi13th of 391,049th of 3,144
Median household income$86,71411th of 39381st of 3,143

Full data for Franklin County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population102,612Vintage 2025 Population Estimates
Population in 202097,137Vintage 2025 Population Estimates
2020 estimates base?96,745Vintage 2025 Population Estimates
Land area1,242 sq mi2025 Gazetteer Files
Water area23.4 sq mi2025 Gazetteer Files
Total area1,265 sq mi2025 Gazetteer Files
Population density?82.6 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$86,714American Community Survey 2020-2024 5-Year Estimates
Median home value$379,300American Community Survey 2020-2024 5-Year Estimates
Median age30.9American Community Survey 2020-2024 5-Year Estimates
Households29,890American Community Survey 2020-2024 5-Year Estimates
Housing units31,183American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+896
1,432 births, 536 deaths
Net migration
+318
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 6 areas bordering Franklin County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Walla Walla CountyWashington58 mi62,361
Adams CountyWashington55 mi21,488
Benton CountyWashington45 mi221,722
Whitman CountyWashington15 mi48,512
Grant CountyWashington8.1 mi105,727
Columbia CountyWashington0.7 mi4,141

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 39 counties of Washington

Open the interactive Washington county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.