Adams County, Indiana
Adams County, Indiana, has 36,650 residents (July 2025 estimate). Its county seat is Decatur. It uses Eastern Time and covers 339 sq mi (878 km²) of land.
- Resident population, July 2025
- 36,650
- Land area
- 339 sq mi (878 km²)
- County seat or government
- Decatur
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $65,289 ± $4,066
- Median home value
- $178,400 ± $13,273
- Median rent, with utilities
- $833 ± $52
- Homes lived in by their owners
- 83.5% ± 1.8 points
- County type
- County
- Metro or micro area
- Decatur, IN micro areaCentral county
- Water area
- 1.04 sq mi (2.69 km²)
- State
- Indiana
- County code (FIPS)
- 18001
- Coordinates (central point)
- 40.745730, -84.936134
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 Adams 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
- 4673319,318 people
- 4671415,734 people
- 467118,353 people
- 467776,081 people
- 467404,486 people
- 467733,474 people
- 467723,288 people
- 473261,803 people
8 ZIP Code areas overlap Adams 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 Adams County, largest first
- Washington Township8,767 people
- Wabash Township6,612 people
- Root Township6,115 people
- Monroe Township5,335 people
- Hartford Township1,860 people
- Kirkland Township1,464 people
- Preble Township1,440 people
- Blue Creek Township1,218 people
- St. Marys Township1,130 people
- Jefferson Township967 people
- French Township772 people
- Union Township547 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Indiana, by county
School districts in Adams County, largest first
- North Adams Community Schools15,226 people
- South Adams Schools11,671 people
- Adams Central Community Schools9,330 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.
- Decatur, Indiana (city)9,811 people
- Berne, Indiana (city)3,965 people
- Geneva, Indiana (town)1,347 people
- Monroe, Indiana (town)707 people
- Linn Grove, Indiana (CDP)396 people
- Pleasant Mills, Indiana (CDP)124 people
- Preble, Indiana (CDP)88 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Wells County, Indiana15 mi west
- Van Wert County, Ohio20 mi northeast
- Mercer County, Ohio22 mi southeast
- Jay County, Indiana22 mi south
- Allen County, Indiana25 mi north
Before using this answer on a form
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