County ZIP codes · Iowa · FIPS 19003
Adams County, IA ZIP Codes
Adams County, Iowa has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 4 of the residential ones lie mainly in Adams County and 6 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $58,015 in 50801 (Creston) to $70,926 in 50851 (Lenox) (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 $58,015 and $69,861.
They carry 10 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 10 residential ZIP codes in Adams County
4 ZIP codes lie mainly in Adams County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 50841 | Corning | 2,340 | 10 | $67k | $117k | 89% |
| 50859 | Prescott | 676 | 8 | $77k | $164k | 95% |
| 50857 | Nodaway | 156 | 3 | $64k | $163k | 73% |
| 50839 | Carbon | 46 | 92 | $49k | – | 100% |
Partly in Adams County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 50851 | Lenox | 2,193 | 17 | $71k | $121k | 34% |
| 50801 | Creston | 9,034 | 44 | $58k | $125k | 21% |
| 50837 | Bridgewater | 282 | 5 | $63k | $117k | 13% |
| 50843 | Cumberland | 540 | 7 | $56k | $105k | 8% |
| 50864 | Villisca | 1,662 | 11 | $70k | $110k | 4% |
| 50853 | Massena | 716 | 10 | $65k | $169k | 2% |
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?
9 ZIP codes of Adams County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Adams | Elsewhere |
|---|---|---|
| 50801 | 21% | Union County 69%; Adair County 11% |
| 50841 | 89% | Taylor County 11% |
| 50851 | 34% | Taylor County 44%; Union County 17%; Ringgold County 4% |
| 50864 | 4% | Montgomery County 65%; Page County 20%; Taylor County 9%; Cass County 2% |
| 50853 | 2% | Cass County 98% |
| 50859 | 95% | Adair County 5% |
| 50843 | 8% | Cass County 92% |
| 50837 | 13% | Adair County 70%; Cass County 17% |
| 50857 | 73% | Taylor County 26%; Montgomery County 1% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
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. Every ZIP code of Adams County starts with 508.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 508 | Des Moines, IA (SCF 500) | 10 | 28 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.