• county
  • FIPS 18175
  • Largest town: Salem

Washington County, Indiana

Washington County had 28,345 residents in the Census Vintage 2024 estimate, on 513.7 square miles of land. It ranks 57th of 92 in Indiana by population and 7th by land area.

Population
28,345
#57 of 92 in Indiana · #1,498 in US
Area
513.7 sq mi
#7 of 92 in Indiana · #2,028 in US
Density
55 / sq mi
#71 of 92 in Indiana · #1,378 in US
Median household income
$55,682
#87 of 92 in Indiana · #2,263 in US

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

Washington County within Indiana. Pin: Indianapolis.

Measure from here

Tools and pages that start from Washington County

Washington County population, land area and income

Washington County had 28,345 residents in the Census Vintage 2024 estimate, on 513.7 square miles of land. It ranks 57th of 92 in Indiana by population and 7th by land area. That works out to 55.2 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Indiana has 34,874 residents; Washington County is somewhat smaller.

Its SAIPE 2023 median household income of $55,682 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

28,345

3144th1st

1498th of 3,144 (US)

Land area

514 sq mi

3144th1st

2028th of 3,144 (US)

Density

55.2 / sq mi

3144th1st

1378th of 3,144 (US)

Median household income

$55,682

3143rd1st

2263rd of 3,143 (US)

Rank within Indiana (92)

Population

28,345

92nd1st

57th of 92 (IN)

Land area

514 sq mi

92nd1st

7th of 92 (IN)

Density

55.2 / sq mi

92nd1st

71st of 92 (IN)

Median household income

$55,682

92nd1st

87th of 92 (IN)

How Washington County's population changed since 2020

Washington County gained 112 residents between the July 2020 and July 2024 estimates, a rise of 0.4%. That ranks 56th of 92 in Indiana for growth. The median Indiana county changed by +0.8%, and the state as a whole by +2.0%.

Since the April 2020 estimates base, Washington County recorded 1,352 births and 1,651 deaths, a natural change of -299. Net international migration added +52 and net domestic migration, people moving to or from other US counties, came to +439. The largest single component was domestic migration, which added 439 people.

28.2k202028.1k202128.2k202228.2k202328.3k2024
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
1,352
Deaths
1,651
Net international migration
+52
Net domestic migration
+439
Change, July 2023 to July 2024
+156

Where Washington County is

The Census internal point of Washington County is at 38.600600, -86.104800. It sits in UTM zone 16N. The map shades Indiana's 92 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.

Vigo County: +0.0%Fayette County: -0.1%Grant County: -0.1%Noble County: +0.7%Clay County: -0.0%Fulton County: -2.3%Henry County: +0.3%Jasper County: +1.5%Carroll County: +2.0%Huntington County: +0.8%Howard County: +0.6%Tipton County: -0.4%Starke County: +0.3%Lawrence County: +0.4%Jennings County: +0.2%Jay County: -1.5%Greene County: +1.3%Blackford County: -2.4%Madison County: +3.1%Parke County: +2.1%DeKalb County: +2.4%Scott County: +1.5%Benton County: +1.7%Wells County: +2.3%Wabash County: -0.5%Union County: -2.8%Marshall County: +0.8%Putnam County: +3.1%Clinton County: -0.8%Hamilton County: +8.8%Hancock County: +10.8%Jackson County: +2.0%Hendricks County: +8.5%Johnson County: +5.1%Decatur County: -0.2%Lake County: +0.8%Newton County: +2.5%Fountain County: +2.1%Crawford County: +0.0%Perry County: +0.9%Martin County: +0.6%Dearborn County: +1.3%Morgan County: +2.8%Monroe County: +0.0%Switzerland County: +2.5%Ohio County: +1.2%Sullivan County: -0.2%Franklin County: +1.5%Adams County: +2.0%Jefferson County: -0.5%Knox County: -1.1%Ripley County: +0.8%Vanderburgh County: +0.0%Gibson County: -0.1%LaGrange County: +1.5%Dubois County: -0.0%Harrison County: +0.8%Randolph County: -0.3%Brown County: +1.1%Shelby County: +1.3%Tippecanoe County: +2.8%Daviess County: +2.2%Delaware County: +1.1%Elkhart County: +0.2%Whitley County: +1.6%Allen County: +3.4%Montgomery County: +1.8%Miami County: -0.8%St. Joseph County: +0.4%Kosciusko County: +0.6%Floyd County: +1.8%Rush County: -0.1%Wayne County: -0.2%Posey County: -0.5%Clark County: +5.0%Orange County: -0.1%Marion County: +0.5%Boone County: +10.7%Porter County: +1.5%Steuben County: +1.2%Vermillion County: +0.8%Cass County: -0.6%Owen County: +2.5%White County: +0.6%Washington County: +0.4%Pulaski County: -0.8%Pike County: -1.1%Warren County: +0.3%Warrick County: +3.7%Spencer County: +1.8%LaPorte County: -0.8%Bartholomew County: +3.1%
Change 2020 to 2024
  1. < -0.2%
  2. < +0.4%
  3. < +1.2%
  4. < +2.1%
  5. ≥ +2.1%
no data

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

Internal point

Decimal
38.600600, -86.104800
DMS
38°36'2.16"N 86°06'17.28"W
UTM
16N 577951.6E 4272836.2N
Geohash
dnfg8eh2u
Plus code
86CMJV2W+63

Towns in Washington County

2 incorporated places of 1,000+ people have residents in Washington County, 7,796 people together, or 28% 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 Salem with 6,463.

  1. 01Salem6,463
  2. 02New Pekin1,333
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Washington County

The Census 2024 county adjacency file lists 8 neighbors for Washington County. The most populous is Clark County, IN, with 127,479 residents. Distances run between Census internal points in a straight line.

Distance to Indianapolis and the nearest big city

Indianapolis is 80.8 miles N of Washington County's internal point in a straight line. The nearest place of 100,000 or more is Louisville/Jefferson County, KY (population 640,796), 39.0 miles away. The nearest place of 10,000 or more is Sellersburg, IN (population 10,057), 22.6 miles away.

Washington County FIPS code

The FIPS code of Washington County is 18175: state code 18 for Indiana plus county code 175. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $55,682.

Questions people ask

What is the population of Washington County, Indiana?

The Census Vintage 2024 estimate for July 1, 2024 is 28,345. That is up 112 people (0.4%) from the July 2020 estimate of 28,233.

What is the FIPS code of Washington County?

18175. The first two digits (18) are Indiana; the last three (175) identify the county.

What is the largest town in Washington County?

Salem, with 6,463 residents inside Washington County in 2024.

Which counties border Washington County?

8 county-equivalents border it in the Census 2024 adjacency file: Clark County, IN; Floyd County, IN; Jackson County, IN; Lawrence County, IN; Harrison County, IN; Scott County, IN; Orange County, IN; Crawford County, IN.

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.