County ZIP codes · Indiana · FIPS 18103
Miami County, IN ZIP Codes
Miami County, Indiana has 14 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 13 residential and 1 for PO boxes or a single organization. 8 of the residential ones lie mainly in Miami County and 5 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $57,842 in 46970 (Peru) to $83,664 in 46919 (Converse) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Miami 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 $60,495 and $68,218.
They carry 13 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 13 residential ZIP codes in Miami County
8 ZIP codes lie mainly in Miami County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46970 | Peru | 23,020 | 128 | $58k | $119k | 92% |
| 46914 | Bunker Hill | 4,142 | 143 | $64k | $159k | 100% |
| 46951 | Macy | 2,376 | 36 | $55k | $150k | 83% |
| 46911 | Amboy | 1,656 | 43 | $95k | $209k | 79% |
| 46926 | Denver | 1,359 | 38 | $68k | $153k | 93% |
| 46958 | Mexico | 620 | 480 | $88k | $102k | 100% |
| 46959 | Miami | 409 | 998 | $79k | – | 100% |
| 46971 | Grissom Arb | no residents | 0 | – | – | 100% |
Partly in Miami County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 46974 | Roann | 1,586 | 38 | $62k | $180k | 40% |
| 46919 | Converse | 1,968 | 46 | $84k | $193k | 36% |
| 46901 | Kokomo | 38,082 | 270 | $61k | $142k | 15% |
| 46910 | Akron | 3,221 | 54 | $69k | $204k | 6% |
| 46932 | Galveston | 3,066 | 56 | $62k | $166k | 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 Miami County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Miami | Elsewhere |
|---|---|---|
| 46901 | 15% | Howard County 85% |
| 46970 | 92% | Cass County 8% |
| 46910 | 6% | Fulton County 69%; Kosciusko County 25% |
| 46932 | 2% | Cass County 88%; Howard County 9% |
| 46951 | 83% | Fulton County 17% |
| 46919 | 36% | Grant County 50%; Howard County 14% |
| 46911 | 79% | Wabash County 21% |
| 46974 | 40% | Wabash County 60% |
| 46926 | 93% | Cass County 4%; Wabash County 3% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 46921 | Deedsville |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Miami 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 Miami County starts with 469.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 469 | Indianapolis, IN (SCF 460) | 14 | 71 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.