Posey County, Indiana
Posey County: county in Indiana, United States
About
Posey County is a county located in the U.S. state of Indiana. As of the 2010 census, the population was 25,910 and a population density of 24 people per km². After 10 years in 2020 county had an estimated population of 25,275 inhabitants. Its county seat is Mount Vernon. The county was created 211 years ago in 1814.
County Snapshot
Posey County at a glance
Posey County currently has 8 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
8
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Indiana counties
92
Open related pagesLargest city
Mount VernonPopulation 6,426
Top linked places
Quick Facts about Posey County
| Population | 25,275 (2020) |
| Country | United States of America |
| State | Indiana (United States) |
| Area | 1086 km2 |
| Water as percent of area | 2.33% |
| Land as percent of area | 97.67% |
| Latitude & Longitude | 38.0219,-87.8685 |
| Named for | Thomas Posey |
| Altitude | 420 feet / 128 meters |
| Capital | Mount Vernon |
| Establishment | September 07, 1814 |
| Time Zone | America/Chicago |
| Local time | 11:51:12 (15th April 2026) |
| Density | 23 Pop. per km² as of 2020 |
| Population growth | -2.51% (2010-2020) |
| Weather | 85℉ Chance Showers And Thunderstorms 7-days weather |
Geography
Posey County is located at 38°1'19"N 87°52'6"W (38.0218900, -87.8684700). It has 6 neighbors: Gallatin County, White County, Gibson County, Vanderburgh County, Henderson County and Union County.
Posey County map
icon to open full mode. View satellite images
The largest city of Posey County is Mount Vernon with a population of 6,426. Other cities include, Springfield population 3,924, Poseyville population 1,031, New Harmony population 747 and Cynthiana population 532. See all Posey County cities & populated places.
Posey County Populated Places
Cities, towns, neighborhoods & other populated places in Posey County.
| City Name | Population | Title |
|---|---|---|
| Mount Vernon | 6,426 | City in Posey County, Indiana, United States of America |
| Springfield | 3,924 | Human settlement in Indiana, United States of America |
| Oak Grove | 1,565 | Township in Benton County, Indiana |
| Poseyville | 1,031 | Town in Indiana, United States |
| New Harmony | 747 | Human settlement in Posey County, Indiana, United States of America |
| Cynthiana | 532 | Human settlement in Posey County, Indiana, United States of America |
| Prairie | 207 | City in United States of America |
| Griffin | 167 | Town in Indiana, USA |
Weather
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Southwest wind around 15 mph, with gusts as high as 23 mph.
7-Day ForecastOfficial website of Posey County
Official Website- Mount Vernon
Demographics
According to census records, the population of Posey County decreased by 2.51% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 25,910 | - | census |
| 2011 | 25,695 | -0.84% | estimation process |
| 2012 | 25,616 | -0.31% | estimation process |
| 2013 | 25,561 | -0.22% | estimation process |
| 2014 | 25,603 | 0.16% | estimation process |
| 2015 | 25,613 | 0.04% | estimation process |
| 2016 | 25,639 | 0.1% | estimation process |
| 2017 | 25,569 | -0.27% | estimation process |
| 2018 | 25,554 | -0.06% | estimation process |
| 2019 | 25,427 | -0.5% | estimation process |
| 2020 | 25,275 | -0.6% | estimation process |
People born in Posey County (1)
American politician (1842-1927) George W. Snow was born in Posey County
Indiana Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Marion County | 966,183 | County in Oregon, United States |
| Indianapolis | 877,903 | The sixteenth most populous city in the United States and the center of the Indianapolis metropolitan area. |
| Lake County | 487,536 | County in Indiana, United States |
| Allen County | 382,187 | County in Indiana, United States |
| Hamilton County | 344,238 | County in Indiana, United States |
| Fort Wayne | 272,398 | The second most populous city in Indiana and the center of the Fort Wayne metropolitan area. |
| Saint Joseph County | 271,484 | County in Indiana, United States |
| Elkhart County | 206,161 | County in Indiana, United States |
| Tippecanoe County | 196,115 | County in the northwest quadrant of Indiana, United States |
| Vanderburgh County | 182,447 | County in Indiana, United States |
| Hendricks County | 173,251 | County in Indiana, United States |
| Porter County | 170,980 | County in Indiana, United States |
| Johnson County | 160,607 | County in Indiana, United States |
| Monroe County | 148,219 | County in Indiana, United States |
| Madison County | 129,681 | County in Indiana, United States |
| Clark County | 119,266 | County in Indiana, United States |