• county
  • FIPS 18129
  • Largest town: Mount Vernon

Posey County, Indiana

Posey County had 25,067 residents in the Census Vintage 2024 estimate, on 409.4 square miles of land. It ranks 61st of 92 in Indiana by population and 35th by land area.

Population
25,067
#61 of 92 in Indiana · #1,621 in US
Area
409.4 sq mi
#35 of 92 in Indiana · #2,467 in US
Density
61 / sq mi
#63 of 92 in Indiana · #1,292 in US
Median household income
$76,228
#16 of 92 in Indiana · #618 in US

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

Posey County within Indiana. Pin: Indianapolis.

Measure from here

Tools and pages that start from Posey County

Posey County population, land area and income

Posey County had 25,067 residents in the Census Vintage 2024 estimate, on 409.4 square miles of land. It ranks 61st of 92 in Indiana by population and 35th by land area. That works out to 61.2 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; Posey County is somewhat smaller.

Its SAIPE 2023 median household income of $76,228 is in the top quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

25,067

3144th1st

1621st of 3,144 (US)

Land area

409 sq mi

3144th1st

2467th of 3,144 (US)

Density

61.2 / sq mi

3144th1st

1292nd of 3,144 (US)

Median household income

$76,228

3143rd1st

618th of 3,143 (US)

Rank within Indiana (92)

Population

25,067

92nd1st

61st of 92 (IN)

Land area

409 sq mi

92nd1st

35th of 92 (IN)

Density

61.2 / sq mi

92nd1st

63rd of 92 (IN)

Median household income

$76,228

92nd1st

16th of 92 (IN)

How Posey County's population changed since 2020

Posey County lost 118 residents between the July 2020 and July 2024 estimates, a drop of 0.5%. That ranks 79th 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, Posey County recorded 988 births and 1,167 deaths, a natural change of -179. Net international migration added +32 and net domestic migration, people moving to or from other US counties, came to +5. The largest single component was natural change, which removed 179 people.

25.2k202025.2k202125.1k202225.0k202325.1k2024
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
988
Deaths
1,167
Net international migration
+32
Net domestic migration
+5
Change, July 2023 to July 2024
+20

Where Posey County is

The Census internal point of Posey County is at 38.027600, -87.868700. 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 Posey 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: Posey County internal point. Dark pin: Indianapolis.

Internal point

Decimal
38.027600, -87.868700
DMS
38°01'39.36"N 87°52'7.32"W
UTM
16N 423758.3E 4209233.4N
Geohash
dnc826xyy
Plus code
86CJ24HJ+2G

Towns in Posey County

One incorporated place of 1,000+ people has residents in Posey County, 6,341 people together, or 25% of the county. Each figure counts only the part of the town inside Posey County; towns marked "part" extend into another county. The largest is Mount Vernon with 6,341.

  1. 01Mount Vernon6,341
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Posey County

The Census 2024 county adjacency file lists 6 neighbors for Posey County, including 4 across a state line. The most populous is Vanderburgh County, IN, with 180,387 residents. Distances run between Census internal points in a straight line.

Distance to Indianapolis and the nearest big city

Indianapolis is 151.4 miles NE of Posey County's internal point in a straight line. The nearest place of 100,000 or more is Evansville, IN (population 115,395), 18.4 miles away.

Posey County FIPS code

The FIPS code of Posey County is 18129: state code 18 for Indiana plus county code 129. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $76,228.

Questions people ask

What is the population of Posey County, Indiana?

The Census Vintage 2024 estimate for July 1, 2024 is 25,067. That is down 118 people (0.5%) from the July 2020 estimate of 25,185.

What is the FIPS code of Posey County?

18129. The first two digits (18) are Indiana; the last three (129) identify the county.

What is the largest town in Posey County?

Mount Vernon, with 6,341 residents inside Posey County in 2024.

Which counties border Posey County?

6 county-equivalents border it in the Census 2024 adjacency file: Vanderburgh County, IN; Henderson County, KY; Gibson County, IN; White County, IL; Union County, KY; Gallatin County, IL.

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.