Posey County, Indiana
Posey County, Indiana, has 24,988 residents (July 2025 estimate). Its county seat is Mount Vernon. It uses Central Time and covers 409 sq mi (1,060 km²) of land.
- Resident population, July 2025
- 24,988
- Land area
- 409 sq mi (1,060 km²)
- County seat or government
- Mount Vernon
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $78,129 ± $4,823
- Median home value
- $222,900 ± $11,069
- Median rent, with utilities
- $782 ± $86
- Homes lived in by their owners
- 82.3% ± 2.5 points
- County type
- County
- Metro or micro area
- Evansville, IN metro areaOutlying county
- Water area
- 10.2 sq mi (26.5 km²)
- State
- Indiana
- County code (FIPS)
- 18129
- Coordinates (central point)
- 38.027614, -87.868653
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Posey County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 4771225,444 people
- 4762012,361 people
- 476383,633 people
- 476332,602 people
- 476312,148 people
- 47612818 people
- 47616232 people
7 ZIP Code areas overlap Posey County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
Posey County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Posey County, largest first
- Black Township8,904 people
- Marrs Township5,392 people
- Robinson Township3,881 people
- Robb Township1,943 people
- Harmony Township1,577 people
- Center Township1,493 people
- Lynn Township814 people
- Smith Township774 people
- Bethel Township224 people
- Point Township114 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Indiana, by county
School districts in Posey County, largest first
- Mount Vernon Metropolitan School District15,224 people
- North Posey County Schools Metropolitan School District9,892 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Mount Vernon, Indiana (city)6,400 people
- Poseyville, Indiana (town)1,270 people
- St. Wendel, Indiana (CDP)923 people
- New Harmony, Indiana (town)845 people
- Cynthiana, Indiana (town)716 people
- Wadesville, Indiana (CDP)672 people
- Parkers Settlement, Indiana (CDP)605 people
- Stewartsville, Indiana (CDP)206 people
- Blairsville, Indiana (CDP)203 people
- Griffin, Indiana (town)148 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Vanderburgh County, Indiana15 mi east
- White County, Illinois17 mi west
- Henderson County, Kentucky23 mi southeast
- Gibson County, Indiana25 mi northeast
- Union County, Kentucky26 mi south
- Gallatin County, Illinois27 mi southwest
Before using this answer on a form
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