• county
  • FIPS 40147
  • Largest town: Bartlesville

Washington County, Oklahoma

Washington County had 54,060 residents in the Census Vintage 2024 estimate, on 415.5 square miles of land. It ranks 14th of 77 in Oklahoma by population and 76th by land area.

Population
54,060
#14 of 77 in Oklahoma · #959 in US
Area
415.5 sq mi
#76 of 77 in Oklahoma · #2,434 in US
Density
130 / sq mi
#7 of 77 in Oklahoma · #755 in US
Median household income
$66,236
#11 of 77 in Oklahoma · #1,275 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Washington County within Oklahoma. Pin: Oklahoma City.

Measure from here

Tools and pages that start from Washington County

Washington County population, land area and income

Washington County had 54,060 residents in the Census Vintage 2024 estimate, on 415.5 square miles of land. It ranks 14th of 77 in Oklahoma by population and 76th by land area. That works out to 130.1 people per square mile, 1.4 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Oklahoma has 20,577 residents, so Washington County is 2.6 times that size.

Its SAIPE 2023 median household income of $66,236 is above the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

54,060

3144th1st

959th of 3,144 (US)

Land area

416 sq mi

3144th1st

2434th of 3,144 (US)

Density

130.1 / sq mi

3144th1st

755th of 3,144 (US)

Median household income

$66,236

3143rd1st

1275th of 3,143 (US)

Rank within Oklahoma (77)

Population

54,060

77th1st

14th of 77 (OK)

Land area

416 sq mi

77th1st

76th of 77 (OK)

Density

130.1 / sq mi

77th1st

7th of 77 (OK)

Median household income

$66,236

77th1st

11th of 77 (OK)

How Washington County's population changed since 2020

Washington County gained 1,454 residents between the July 2020 and July 2024 estimates, a rise of 2.8%. That ranks 23rd of 77 in Oklahoma for growth. The median Oklahoma county changed by +0.8%, and the state as a whole by +3.3%.

Since the April 2020 estimates base, Washington County recorded 2,506 births and 3,039 deaths, a natural change of -533. Net international migration added +362 and net domestic migration, people moving to or from other US counties, came to +1,788. The largest single component was domestic migration, which added 1,788 people.

52.6k202052.9k202153.3k202253.8k202354.1k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
2,506
Deaths
3,039
Net international migration
+362
Net domestic migration
+1,788
Change, July 2023 to July 2024
+288

Where Washington County is

The Census internal point of Washington County is at 36.704400, -95.906300. It sits in UTM zone 15N. The map shades Oklahoma's 77 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Washington County outlined. Dots are towns of 1,000+ people with residents in it.

Kingfisher County: +4.2%Okfuskee County: +0.8%Creek County: +2.9%Carter County: +2.3%Hughes County: +0.2%Murray County: -0.9%Haskell County: +2.2%Cherokee County: +3.5%Grady County: +6.3%Canadian County: +16.9%Caddo County: -2.1%Garvin County: +1.9%Custer County: -0.6%Pushmataha County: +0.1%Mayes County: +2.8%Stephens County: +2.9%Dewey County: -4.6%Greer County: -1.1%Logan County: +8.3%Atoka County: +3.1%Nowata County: +2.5%Beckham County: -0.4%Cimarron County: -6.9%Harper County: -1.2%Cleveland County: +2.6%Texas County: -3.4%Marshall County: +5.3%Tulsa County: +3.4%McIntosh County: +4.0%Grant County: -1.3%Seminole County: -0.7%Garfield County: -1.1%Jackson County: -0.8%Blaine County: -1.5%Lincoln County: +4.4%Alfalfa County: +0.0%Jefferson County: +0.8%Okmulgee County: +1.1%Major County: -2.3%Noble County: -0.2%Oklahoma County: +2.3%Pawnee County: +3.5%Bryan County: +8.6%Payne County: +3.1%Adair County: +1.9%Harmon County: -6.5%Love County: +2.6%Craig County: +2.6%Rogers County: +6.3%Muskogee County: +0.8%Sequoyah County: +3.3%Delaware County: +3.4%Johnston County: +0.5%Pittsburg County: -0.9%Le Flore County: +3.4%McClain County: +15.6%Woodward County: -2.1%Ottawa County: +0.6%Choctaw County: -0.2%Cotton County: -0.6%Roger Mills County: -3.6%Washita County: -0.6%Coal County: +2.5%Pontotoc County: +0.6%Kiowa County: -2.8%Tillman County: -3.0%Ellis County: -3.9%Wagoner County: +12.1%Beaver County: -0.1%McCurtain County: -0.1%Kay County: -0.4%Pottawatomie County: +2.6%Osage County: +1.5%Comanche County: +0.2%Washington County: +2.8%Woods County: -0.2%Latimer County: +0.3%
Change 2020 to 2024
  1. < -1.1%
  2. < +0.0%
  3. < +2.2%
  4. < +3.3%
  5. ≥ +3.3%
no data

Orange pin: Washington County internal point. Dark pin: Oklahoma City.

Internal point

Decimal
36.704400, -95.906300
DMS
36°42'15.84"N 95°54'22.68"W
UTM
15N 240379.2E 4066018.8N
Geohash
9yebc9g4t
Plus code
8686P33V+QF

Towns in Washington County

2 incorporated places of 1,000+ people have residents in Washington County, 41,791 people together, or 77% of the county. Each figure counts only the part of the town inside Washington County; towns marked "part" extend into another county. The largest is Bartlesville with 38,352.

  1. 01Bartlesville (part)38,352
  2. 02Dewey3,439
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Washington County

The Census 2024 county adjacency file lists 6 neighbors for Washington County, including 2 across a state line. The most populous is Tulsa County, OK, with 693,514 residents. Distances run between Census internal points in a straight line.

Distance to Oklahoma City and the nearest big city

Oklahoma City is 122.3 miles SW of Washington County's internal point in a straight line. The nearest place of 100,000 or more is Tulsa, OK (population 415,154), 39.8 miles away. The nearest place of 10,000 or more is Bartlesville, OK (population 38,355), 3.3 miles away.

Washington County FIPS code

The FIPS code of Washington County is 40147: state code 40 for Oklahoma plus county code 147. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $66,236.

Questions people ask

What is the population of Washington County, Oklahoma?

The Census Vintage 2024 estimate for July 1, 2024 is 54,060. That is up 1,454 people (2.8%) from the July 2020 estimate of 52,606.

What is the FIPS code of Washington County?

40147. The first two digits (40) are Oklahoma; the last three (147) identify the county.

What is the largest town in Washington County?

Bartlesville, with 38,352 residents inside Washington County in 2024 (38,355 across all 2 counties it spans).

Which counties border Washington County?

6 county-equivalents border it in the Census 2024 adjacency file: Tulsa County, OK; Rogers County, OK; Osage County, OK; Montgomery County, KS; Nowata County, OK; Chautauqua County, KS.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.