County ZIP codes · Iowa · FIPS 19171
Tama County, IA ZIP Codes
Tama County, Iowa has 19 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 12 of the residential ones lie mainly in Tama County and 7 mainly in a neighboring county; 14 cross the county line. Median household income ranges from $57,813 in 52342 (Toledo) to $101,193 in 50106 (Gilman) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Tama 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 $70,367 and $81,125.
They carry 19 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 19 residential ZIP codes in Tama County
12 ZIP codes lie mainly in Tama County; 7 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 52339 | Tama | 4,326 | 44 | $68k | $121k | 97% |
| 52342 | Toledo | 2,705 | 30 | $58k | $143k | 100% |
| 50675 | Traer | 2,198 | 20 | $76k | $157k | 98% |
| 50635 | Gladbrook | 1,423 | 17 | $81k | $155k | 96% |
| 50632 | Garwin | 1,201 | 28 | $72k | $133k | 99% |
| 52215 | Chelsea | 960 | 12 | $62k | $167k | 81% |
| 50173 | Montour | 705 | 21 | $96k | $205k | 100% |
| 52217 | Clutier | 573 | 10 | $84k | $92k | 100% |
| 52225 | Elberon | 387 | 10 | $62k | $148k | 72% |
| 50612 | Buckingham | 369 | 13 | $100k | $292k | 73% |
| 50652 | Lincoln | 113 | 303 | $65k | $98k | 100% |
| 52348 | Vining | 66 | 228 | $73k | $91k | 100% |
Partly in Tama County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 52224 | Dysart | 2,141 | 22 | $70k | $177k | 48% |
| 50669 | Reinbeck | 2,439 | 25 | $82k | $183k | 30% |
| 50106 | Gilman | 1,163 | 17 | $101k | $119k | 20% |
| 52208 | Belle Plaine | 2,877 | 47 | $74k | $121k | 13% |
| 50609 | Beaman | 377 | 11 | $90k | $242k | 3% |
| 50651 | La Porte City | 3,147 | 27 | $88k | $188k | 3% |
| 50158 | Marshalltown | 31,396 | 148 | $70k | $141k | 1% |
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?
14 ZIP codes of Tama County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Tama | Elsewhere |
|---|---|---|
| 50158 | 1% | Marshall County 99% |
| 52339 | 97% | Poweshiek County 3% |
| 50651 | 3% | Black Hawk County 71%; Benton County 26% |
| 52208 | 13% | Benton County 56%; Iowa County 27%; Poweshiek County 3% |
| 50669 | 30% | Grundy County 69%; Black Hawk County 1% |
| 50675 | 98% | Black Hawk County 2% |
| 52224 | 48% | Benton County 52% |
| 50635 | 96% | Marshall County 4% |
| 50632 | 99% | Marshall County 1% |
| 50106 | 20% | Marshall County 51%; Jasper County 23%; Poweshiek County 5% |
| 52215 | 81% | Poweshiek County 19% |
| 52225 | 72% | Benton County 28% |
| 50609 | 3% | Grundy County 66%; Marshall County 31% |
| 50612 | 73% | Black Hawk County 27% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Tama County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Tama County's ZIP codes use 4 prefixes: 501, 506, 522 and 523.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 501 | Des Moines, IA (SCF 500) | 3 | 69 |
| 506 | Waterloo, IA (SCF 506) | 8 | 70 |
| 522 | Cedar Rapids, IA (SCF 522) | 5 | 50 |
| 523 | Cedar Rapids, IA (SCF 522) | 3 | 53 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.