County ZIP codes · Kansas · FIPS 20121
Miami County, KS ZIP Codes
Miami County, Kansas has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 11 residential and 1 for PO boxes or a single organization. 6 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 $56,323 in 66040 (La Cygne) to $164,320 in 66013 (Bucyrus) (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 $84,142 and $101,875.
They carry 11 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 11 residential ZIP codes in Miami County
6 ZIP codes lie mainly in Miami County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 66083 | Spring Hill | 13,011 | 210 | $117k | $371k | 57% |
| 66071 | Paola | 12,400 | 54 | $84k | $263k | 100% |
| 66053 | Louisburg | 7,834 | 75 | $89k | $326k | 100% |
| 66064 | Osawatomie | 5,992 | 81 | $67k | $172k | 97% |
| 66013 | Bucyrus | 2,735 | 61 | $164k | $725k | 58% |
| 66026 | Fontana | 840 | 17 | $78k | $201k | 50% |
Partly in Miami County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 66042 | Lane | 929 | 31 | $68k | $186k | 38% |
| 66040 | La Cygne | 3,651 | 27 | $56k | $174k | 30% |
| 66021 | Edgerton | 2,819 | 55 | $88k | $242k | 27% |
| 66092 | Wellsville | 4,351 | 49 | $88k | $242k | 21% |
| 66072 | Parker | 1,211 | 16 | $102k | $297k | 3% |
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 |
|---|---|---|
| 66083 | 57% | Johnson County 43% |
| 66064 | 97% | Franklin County 3% |
| 66092 | 21% | Franklin County 65%; Douglas County 15% |
| 66040 | 30% | Linn County 70% |
| 66021 | 27% | Johnson County 64%; Douglas County 9% |
| 66013 | 58% | Johnson County 42% |
| 66072 | 3% | Linn County 97% |
| 66042 | 38% | Franklin County 62% |
| 66026 | 50% | Linn County 50% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 66036 | Hillsdale |
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 660.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 660 | Kansas City, MO (SCF 640) | 12 | 71 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.