• county
  • FIPS 18021
  • Largest town: Brazil

Clay County, Indiana

Clay County had 26,424 residents in the Census Vintage 2024 estimate, on 357.6 square miles of land. It ranks 59th of 92 in Indiana by population and 70th by land area.

Population
26,424
#59 of 92 in Indiana · #1,559 in US
Area
357.6 sq mi
#70 of 92 in Indiana · #2,664 in US
Density
74 / sq mi
#55 of 92 in Indiana · #1,140 in US
Median household income
$62,834
#60 of 92 in Indiana · #1,573 in US

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

Clay County within Indiana. Pin: Indianapolis.

Measure from here

Tools and pages that start from Clay County

Clay County population, land area and income

Clay County had 26,424 residents in the Census Vintage 2024 estimate, on 357.6 square miles of land. It ranks 59th of 92 in Indiana by population and 70th by land area. That works out to 73.9 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; Clay County is somewhat smaller.

Its SAIPE 2023 median household income of $62,834 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

26,424

3144th1st

1559th of 3,144 (US)

Land area

358 sq mi

3144th1st

2664th of 3,144 (US)

Density

73.9 / sq mi

3144th1st

1140th of 3,144 (US)

Median household income

$62,834

3143rd1st

1573rd of 3,143 (US)

Rank within Indiana (92)

Population

26,424

92nd1st

59th of 92 (IN)

Land area

358 sq mi

92nd1st

70th of 92 (IN)

Density

73.9 / sq mi

92nd1st

55th of 92 (IN)

Median household income

$62,834

92nd1st

60th of 92 (IN)

How Clay County's population changed since 2020

Clay County lost 3 residents between the July 2020 and July 2024 estimates, a drop of 0.0%. That ranks 67th 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, Clay County recorded 1,196 births and 1,457 deaths, a natural change of -261. Net international migration added +16 and net domestic migration, people moving to or from other US counties, came to +207. The largest single component was natural change, which removed 261 people.

26.4k202026.4k202126.4k202226.4k202326.4k2024
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
1,196
Deaths
1,457
Net international migration
+16
Net domestic migration
+207
Change, July 2023 to July 2024
+5

Where Clay County is

The Census internal point of Clay County is at 39.393900, -87.115900. 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 Clay 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: Clay County internal point. Dark pin: Indianapolis.

Internal point

Decimal
39.393900, -87.115900
DMS
39°23'38.04"N 87°06'57.24"W
UTM
16N 490019.9E 4360496.0N
Geohash
dp401eknh
Plus code
86FJ9VVM+HJ

Towns in Clay County

One incorporated place of 1,000+ people has residents in Clay County, 8,239 people together, or 31% of the county. Each figure counts only the part of the town inside Clay County; towns marked "part" extend into another county. The largest is Brazil with 8,239.

  1. 01Brazil8,239
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Clay County

The Census 2024 county adjacency file lists 6 neighbors for Clay County. The most populous is Vigo County, IN, with 106,166 residents. Distances run between Census internal points in a straight line.

Distance to Indianapolis and the nearest big city

Indianapolis is 57.2 miles ENE of Clay County's internal point in a straight line. The nearest place of 100,000 or more is Indianapolis, IN (population 891,484), 58.0 miles away. The nearest place of 10,000 or more is Terre Haute, IN (population 58,531), 14.7 miles away.

Clay County FIPS code

The FIPS code of Clay County is 18021: state code 18 for Indiana plus county code 021. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $62,834.

Questions people ask

What is the population of Clay County, Indiana?

The Census Vintage 2024 estimate for July 1, 2024 is 26,424. That is down 3 people (0.0%) from the July 2020 estimate of 26,427.

What is the FIPS code of Clay County?

18021. The first two digits (18) are Indiana; the last three (021) identify the county.

What is the largest town in Clay County?

Brazil, with 8,239 residents inside Clay County in 2024.

Which counties border Clay County?

6 county-equivalents border it in the Census 2024 adjacency file: Vigo County, IN; Putnam County, IN; Greene County, IN; Owen County, IN; Sullivan County, IN; Parke 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.