County ZIP codes · Indiana · FIPS 18171
Warren County, IN ZIP Codes
Warren County, Indiana has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Warren County and 5 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $55,242 in 47944 (Fowler) to $74,457 in 47970 (Otterbein) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Warren 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 $55,242 and $70,317.
They carry 11 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 11 residential ZIP codes in Warren County
6 ZIP codes lie mainly in Warren County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 47993 | Williamsport | 3,516 | 24 | $73k | $158k | 100% |
| 47970 | Otterbein | 3,011 | 50 | $75k | $185k | 48% |
| 47991 | West Lebanon | 1,371 | 46 | $106k | $141k | 100% |
| 47975 | Pine Village | 604 | 15 | $71k | $156k | 96% |
| 47917 | Ambia | 239 | 7 | $66k | $165k | 59% |
| 47982 | State Line | 103 | 786 | $74k | $86k | 100% |
Partly in Warren County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 47921 | Boswell | 1,338 | 32 | $101k | $165k | 47% |
| 47918 | Attica | 5,657 | 40 | $70k | $157k | 38% |
| 47932 | Covington | 5,035 | 47 | $60k | $182k | 19% |
| 47906 | West Lafayette | 75,198 | 563 | $53k | $323k | 3% |
| 47944 | Fowler | 3,376 | 18 | $55k | $131k | 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?
8 ZIP codes of Warren County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Warren | Elsewhere |
|---|---|---|
| 47906 | 3% | Tippecanoe County 93%; White County 4% |
| 47918 | 38% | Fountain County 60%; Tippecanoe County 2% |
| 47932 | 19% | Fountain County 64%; Vermillion County 17% |
| 47944 | 2% | Benton County 98% |
| 47970 | 48% | Benton County 46%; Tippecanoe County 4%; White County 2% |
| 47921 | 47% | Benton County 53% |
| 47975 | 96% | Benton County 4% |
| 47917 | 59% | Benton County 41% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Warren 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 Warren County starts with 479.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 479 | Indianapolis, IN (SCF 460) | 11 | 71 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.