County ZIP codes · Indiana · FIPS 18001
Adams County, IN ZIP Codes
Adams County, Indiana has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 8 residential and 3 for PO boxes or a single organization. 4 of the residential ones lie mainly in Adams County and 4 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $48,438 in 47326 (Bryant) to $80,000 in 46772 (Monroe) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Adams County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $58,484 and $72,758.
They carry 8 postal town names: Decatur, Bluffton, Berne, Ossian, Geneva, Monroeville, Monroe, Bryant.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 8 residential ZIP codes in Adams County
4 ZIP codes lie mainly in Adams County; 4 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46733 | Decatur | 19,318 | 112 | $65k | $176k | 97% |
| 46711 | Berne | 8,353 | 145 | $71k | $173k | 100% |
| 46740 | Geneva | 4,486 | 72 | $59k | $159k | 92% |
| 46772 | Monroe | 3,288 | 88 | $80k | $242k | 100% |
Partly in Adams County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
6 ZIP codes of Adams County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Adams | Elsewhere |
|---|---|---|
| 46733 | 97% | Allen County 3% |
| 46714 | 8% | Wells County 92% |
| 46777 | 3% | Wells County 92%; Allen County 5% |
| 46740 | 92% | Wells County 8% |
| 46773 | 6% | Allen County 94% |
| 47326 | 4% | Jay County 96% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 46769 | Linn Grove |
| 46780 | Pleasant Mills |
| 46782 | Preble |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Adams County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Adams County's ZIP codes use 2 prefixes: 467 and 473.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.