County ZIP codes · Indiana · FIPS 18057
Hamilton County, IN ZIP Codes
Hamilton County, Indiana has 25 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 20 residential and 5 for PO boxes or a single organization. 13 of the residential ones lie mainly in Hamilton County and 7 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $72,504 in 46260 (Indianapolis) to $177,679 in 46077 (Zionsville) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Hamilton 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 $91,152 and $132,085.
They carry 13 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 20 residential ZIP codes in Hamilton County
13 ZIP codes lie mainly in Hamilton County; 7 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46032 | Carmel | 51,515 | 2,032 | $132k | $497k | 100% |
| 46074 | Westfield | 48,901 | 1,344 | $127k | $437k | 100% |
| 46037 | Fishers | 48,713 | 2,424 | $142k | $434k | 100% |
| 46060 | Noblesville | 47,610 | 591 | $92k | $321k | 98% |
| 46038 | Fishers | 43,754 | 2,820 | $107k | $333k | 100% |
| 46062 | Noblesville | 41,060 | 1,225 | $120k | $383k | 100% |
| 46033 | Carmel | 40,881 | 2,346 | $153k | $487k | 100% |
| 46034 | Cicero | 7,531 | 241 | $92k | $311k | 100% |
| 46280 | Indianapolis | 7,514 | 1,813 | $91k | $324k | 100% |
| 46069 | Sheridan | 7,504 | 85 | $77k | $292k | 57% |
| 46030 | Arcadia | 3,035 | 92 | $91k | $246k | 100% |
| 46031 | Atlanta | 2,456 | 48 | $76k | $228k | 68% |
| 46290 | Indianapolis | 81 | 127 | – | $571k | 100% |
Partly in Hamilton County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46040 | Fortville | 15,943 | 507 | $148k | $436k | 19% |
| 46256 | Indianapolis | 20,990 | 1,883 | $94k | $318k | 8% |
| 46077 | Zionsville | 36,760 | 829 | $178k | $581k | 6% |
| 46055 | McCordsville | 16,010 | 610 | $114k | $351k | 5% |
| 46240 | Indianapolis | 19,595 | 2,091 | $75k | $348k | 2% |
| 46050 | Kirklin | 1,808 | 38 | $75k | $164k | 1% |
| 46260 | Indianapolis | 35,707 | 3,429 | $73k | $289k | 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?
10 ZIP codes of Hamilton County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Hamilton | Elsewhere |
|---|---|---|
| 46060 | 98% | Madison County 2% |
| 46077 | 6% | Boone County 92%; Marion County 1% |
| 46260 | 1% | Marion County 99% |
| 46256 | 8% | Marion County 92% |
| 46240 | 2% | Marion County 98% |
| 46055 | 5% | Hancock County 95% |
| 46040 | 19% | Hancock County 62%; Madison County 18% |
| 46069 | 57% | Boone County 36%; Clinton County 7% |
| 46031 | 68% | Tipton County 32% |
| 46050 | 1% | Clinton County 77%; Boone County 19%; Tipton County 4% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Hamilton County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Hamilton County's ZIP codes use 2 prefixes: 460 and 462.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 460 | Indianapolis, IN (SCF 460) | 18 | 51 |
| 462 | Indianapolis, IN (SCF 460) | 7 | 63 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.