Decatur County, Indiana
Decatur County, Indiana, has 26,576 residents (July 2025 estimate). Its county seat is Greensburg. It uses Eastern Time and covers 373 sq mi (965 km²) of land.
- Resident population, July 2025
- 26,576
- Land area
- 373 sq mi (965 km²)
- County seat or government
- Greensburg
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $69,783 ± $7,427
- Median home value
- $199,100 ± $14,075
- Median rent, with utilities
- $861 ± $40
- Homes lived in by their owners
- 76.1% ± 2.9 points
- County type
- County
- Metro or micro area
- Greensburg, IN micro areaCentral county
- Water area
- 0.75 sq mi (1.96 km²)
- State
- Indiana
- County code (FIPS)
- 18031
- Coordinates (central point)
- 39.305980, -85.499831
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 Decatur County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/Indiana/Indianapolis | UTC-05:00 in January; UTC-04:00 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
- 4724021,484 people
- 4726520,937 people
- 4700612,988 people
- 4617310,440 people
- 472464,326 people
- 472834,305 people
- 472721,844 people
- 46156952 people
- 47244533 people
- 47263123 people
- 4722576 people
11 ZIP Code areas overlap Decatur 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
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Decatur County, largest first
- Washington Township14,080 people
- Sandcreek Township3,106 people
- Marion Township2,205 people
- Fugit Township1,769 people
- Adams Township1,644 people
- Clay Township1,220 people
- Saltcreek Township1,029 people
- Jackson Township953 people
- Clinton Township416 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Indiana, by county
School districts in Decatur County, largest first
- Greensburg Community Schools15,206 people
- Decatur County Community Schools11,482 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.
- Greensburg, Indiana (city)12,229 people
- Westport, Indiana (town)1,651 people
- St. Paul, Indiana (town)887 people
- Lake Santee, Indiana (CDP)820 people
- Millhousen, Indiana (town)227 people
- New Point, Indiana (town)201 people
- Sandusky, Indiana (CDP)200 people
- Letts, Indiana (CDP)154 people
- Sardinia, Indiana (CDP)130 people
- Adams, Indiana (CDP)121 people
- Clarksburg, Indiana (CDP)76 people
- Milford, Indiana (CDP)67 people
All 14
- St. Omer, Indiana (CDP)19 people
- Burney, Indiana (CDP)0 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Ripley County, Indiana19 mi southeast
- Shelby County, Indiana22 mi northwest
- Rush County, Indiana22 mi north
- Bartholomew County, Indiana22 mi west
- Jennings County, Indiana22 mi south
- Franklin County, Indiana24 mi east
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
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