County ZIP codes · Indiana · FIPS 18085
Kosciusko County, IN ZIP Codes
Kosciusko County, Indiana has 21 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 20 residential and 1 for PO boxes or a single organization. 14 of the residential ones lie mainly in Kosciusko County and 6 mainly in a neighboring county; 12 cross the county line. Median household income ranges from $58,906 in 46732 (Cromwell) to $99,420 in 46510 (Claypool) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Kosciusko 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 $66,738 and $78,606.
They carry 19 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 20 residential ZIP codes in Kosciusko County
14 ZIP codes lie mainly in Kosciusko County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46580 | Warsaw | 21,794 | 306 | $72k | $193k | 100% |
| 46582 | Warsaw | 14,604 | 253 | $67k | $255k | 100% |
| 46567 | Syracuse | 9,292 | 162 | $77k | $240k | 61% |
| 46542 | Milford | 5,096 | 101 | $79k | $188k | 96% |
| 46590 | Winona Lake | 5,080 | 1,823 | $82k | $275k | 100% |
| 46562 | Pierceton | 5,040 | 84 | $69k | $196k | 84% |
| 46538 | Leesburg | 4,291 | 134 | $90k | $271k | 100% |
| 46510 | Claypool | 2,984 | 44 | $99k | $208k | 100% |
| 46539 | Mentone | 2,659 | 76 | $74k | $159k | 86% |
| 46982 | Silver Lake | 2,604 | 59 | $80k | $190k | 73% |
| 46555 | North Webster | 2,517 | 249 | $70k | $203k | 100% |
| 46524 | Etna Green | 2,023 | 58 | $66k | $178k | 99% |
| 46508 | Burket | 203 | 2,538 | $56k | $109k | 100% |
| 46502 | Atwood | no residents | 0 | – | – | 100% |
Partly in Kosciusko County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46550 | Nappanee | 12,843 | 179 | $84k | $282k | 35% |
| 46910 | Akron | 3,221 | 54 | $69k | $204k | 25% |
| 46962 | North Manchester | 8,785 | 83 | $68k | $160k | 8% |
| 46787 | South Whitley | 4,031 | 61 | $62k | $167k | 8% |
| 46732 | Cromwell | 2,231 | 95 | $59k | $175k | 7% |
| 46504 | Bourbon | 3,500 | 53 | $75k | $184k | 4% |
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?
12 ZIP codes of Kosciusko County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Kosciusko | Elsewhere |
|---|---|---|
| 46550 | 35% | Elkhart County 54%; Marshall County 6%; St. Joseph County 5% |
| 46567 | 61% | Elkhart County 39% |
| 46962 | 8% | Wabash County 90%; Whitley County 1% |
| 46542 | 96% | Elkhart County 4% |
| 46562 | 84% | Whitley County 13%; Noble County 4% |
| 46787 | 8% | Whitley County 90%; Huntington County 1% |
| 46504 | 4% | Marshall County 96% |
| 46910 | 25% | Fulton County 69%; Miami County 6% |
| 46539 | 86% | Fulton County 8%; Marshall County 6% |
| 46982 | 73% | Wabash County 24%; Fulton County 3% |
| 46732 | 7% | Noble County 93% |
| 46524 | 99% | Marshall County 1% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 46581 | Warsaw |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Kosciusko County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Kosciusko County's ZIP codes use 3 prefixes: 465, 467 and 469.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 465 | South Bend, IN (SCF 465) | 16 | 52 |
| 467 | Fort Wayne, IN (SCF 467) | 2 | 66 |
| 469 | Indianapolis, IN (SCF 460) | 3 | 71 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.