• county
  • FIPS 39167
  • Largest town: Marietta

Washington County, Ohio

Washington County had 58,332 residents in the Census Vintage 2024 estimate, on 632.0 square miles of land. It ranks 44th of 88 in Ohio by population and 5th by land area.

Population
58,332
#44 of 88 in Ohio · #910 in US
Area
632.0 sq mi
#5 of 88 in Ohio · #1,515 in US
Density
92 / sq mi
#59 of 88 in Ohio · #970 in US
Median household income
$59,646
#62 of 88 in Ohio · #1,870 in US

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

Washington County within Ohio. Pin: Columbus.

Measure from here

Tools and pages that start from Washington County

Washington County population, land area and income

Washington County had 58,332 residents in the Census Vintage 2024 estimate, on 632.0 square miles of land. It ranks 44th of 88 in Ohio by population and 5th by land area. That works out to 92.3 people per square mile, near the US average of 96.3, and above the national county median.

The median county-equivalent in Ohio has 58,250 residents, about the same as Washington County.

Its SAIPE 2023 median household income of $59,646 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

58,332

3144th1st

910th of 3,144 (US)

Land area

632 sq mi

3144th1st

1515th of 3,144 (US)

Density

92.3 / sq mi

3144th1st

970th of 3,144 (US)

Median household income

$59,646

3143rd1st

1870th of 3,143 (US)

Rank within Ohio (88)

Population

58,332

88th1st

44th of 88 (OH)

Land area

632 sq mi

88th1st

5th of 88 (OH)

Density

92.3 / sq mi

88th1st

59th of 88 (OH)

Median household income

$59,646

88th1st

62nd of 88 (OH)

How Washington County's population changed since 2020

Washington County lost 1,324 residents between the July 2020 and July 2024 estimates, a drop of 2.2%. That ranks 82nd of 88 in Ohio for growth. The median Ohio county changed by -0.2%, and the state as a whole by +0.7%.

Since the April 2020 estimates base, Washington County recorded 2,236 births and 3,800 deaths, a natural change of -1,564. Net international migration added +189 and net domestic migration, people moving to or from other US counties, came to -78. The largest single component was natural change, which removed 1,564 people.

59.7k202059.5k202158.9k202258.5k202358.3k2024
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
2,236
Deaths
3,800
Net international migration
+189
Net domestic migration
-78
Change, July 2023 to July 2024
-181

Where Washington County is

The Census internal point of Washington County is at 39.450700, -81.490600. It sits in UTM zone 17N. The map shades Ohio's 88 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.

Shelby County: -0.4%Defiance County: +1.0%Darke County: -0.8%Seneca County: -0.6%Wood County: +0.6%Fayette County: -0.7%Clark County: -0.7%Hocking County: -2.2%Jackson County: +0.2%Miami County: +2.7%Richland County: -0.1%Union County: +13.7%Auglaize County: -1.2%Hancock County: +0.1%Morgan County: -1.6%Van Wert County: -0.1%Hardin County: -1.0%Paulding County: -0.3%Portage County: +1.2%Delaware County: +10.6%Harrison County: -3.1%Ross County: -1.3%Crawford County: -0.9%Clinton County: -0.0%Henry County: -0.5%Pike County: -0.0%Cuyahoga County: -1.7%Highland County: +1.0%Knox County: +1.7%Ottawa County: -1.5%Huron County: -0.6%Erie County: -2.2%Holmes County: +1.0%Lawrence County: -4.0%Marion County: -0.6%Fairfield County: +5.2%Putnam County: -0.6%Guernsey County: -0.5%Vinton County: -2.1%Gallia County: -1.2%Trumbull County: -0.7%Wayne County: -0.2%Perry County: +0.6%Ashland County: -0.1%Fulton County: -1.4%Brown County: +1.4%Lucas County: -1.1%Stark County: -0.1%Medina County: +1.1%Belmont County: -2.4%Williams County: -1.4%Mahoning County: -1.0%Noble County: +1.1%Greene County: +2.5%Preble County: -0.5%Allen County: -1.2%Athens County: +1.3%Jefferson County: -2.0%Adams County: +0.8%Monroe County: -2.3%Washington County: -2.2%Logan County: -0.1%Franklin County: +2.4%Warren County: +5.3%Wyandot County: -2.1%Licking County: +3.4%Hamilton County: +0.8%Clermont County: +2.6%Butler County: +2.2%Coshocton County: +1.1%Geauga County: -0.0%Sandusky County: -0.0%Ashtabula County: -0.6%Carroll County: -0.9%Tuscarawas County: -1.2%Morrow County: +2.7%Montgomery County: +0.1%Mercer County: +0.3%Lake County: -0.1%Pickaway County: +6.0%Madison County: +3.8%Muskingum County: +0.1%Meigs County: -3.0%Columbiana County: -1.8%Lorain County: +2.7%Scioto County: -2.8%Champaign County: +0.4%Summit County: -0.3%
Change 2020 to 2024
  1. < -1.4%
  2. < -0.6%
  3. < -0.0%
  4. < +1.1%
  5. ≥ +1.1%
no data

Orange pin: Washington County internal point. Dark pin: Columbus.

Internal point

Decimal
39.450700, -81.490600
DMS
39°27'2.52"N 81°29'26.16"W
UTM
17N 457788.8E 4366908.0N
Geohash
dpn03tu2g
Plus code
86FWFG25+7Q

Towns in Washington County

3 incorporated places of 1,000+ people have residents in Washington County, 20,836 people together, or 36% 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 Marietta with 13,039.

  1. 01Marietta13,039
  2. 02Belpre6,588
  3. 03Beverly1,209
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Washington County

The Census 2024 county adjacency file lists 7 neighbors for Washington County, including 3 across a state line. The most populous is Wood County, WV, with 82,757 residents. Distances run between Census internal points in a straight line.

Distance to Columbus and the nearest big city

Columbus is 87.7 miles WNW of Washington County's internal point in a straight line. The nearest place of 100,000 or more is Columbus, OH (population 933,263), 87.6 miles away. The nearest place of 10,000 or more is Marietta, OH (population 13,039), 3.0 miles away.

Washington County FIPS code

The FIPS code of Washington County is 39167: state code 39 for Ohio plus county code 167. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $59,646.

Questions people ask

What is the population of Washington County, Ohio?

The Census Vintage 2024 estimate for July 1, 2024 is 58,332. That is down 1,324 people (2.2%) from the July 2020 estimate of 59,656.

What is the FIPS code of Washington County?

39167. The first two digits (39) are Ohio; the last three (167) identify the county.

What is the largest town in Washington County?

Marietta, with 13,039 residents inside Washington County in 2024.

Which counties border Washington County?

7 county-equivalents border it in the Census 2024 adjacency file: Wood County, WV; Athens County, OH; Noble County, OH; Morgan County, OH; Monroe County, OH; Tyler County, WV; Pleasants County, WV.

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.