County ZIP codes · Minnesota · FIPS 27045
Fillmore County, MN ZIP Codes
Fillmore County, Minnesota has 16 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 11 of the residential ones lie mainly in Fillmore County and 5 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $59,205 in 55974 (Spring Grove) to $96,328 in 55923 (Chatfield) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Fillmore 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 $65,577 and $85,000.
They carry 16 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 16 residential ZIP codes in Fillmore County
11 ZIP codes lie mainly in Fillmore County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 55975 | Spring Valley | 4,433 | 28 | $77k | $210k | 88% |
| 55923 | Chatfield | 4,375 | 35 | $96k | $293k | 50% |
| 55971 | Rushford | 3,018 | 36 | $89k | $232k | 44% |
| 55965 | Preston | 2,300 | 21 | $66k | $207k | 100% |
| 55939 | Harmony | 1,973 | 21 | $71k | $199k | 100% |
| 55949 | Lanesboro | 1,923 | 17 | $84k | $277k | 100% |
| 55954 | Mabel | 1,332 | 18 | $66k | $160k | 88% |
| 55935 | Fountain | 1,006 | 20 | $85k | $247k | 100% |
| 55990 | Wykoff | 899 | 21 | $73k | $231k | 100% |
| 55922 | Canton | 818 | 25 | $63k | $120k | 100% |
| 55962 | Peterson | 756 | 12 | $77k | $286k | 96% |
Partly in Fillmore County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 55951 | Le Roy | 1,385 | 19 | $61k | $169k | 35% |
| 55961 | Ostrander | 520 | 18 | $98k | $172k | 26% |
| 55976 | Stewartville | 8,509 | 93 | $87k | $280k | 15% |
| 55979 | Utica | 1,053 | 18 | $85k | $280k | 8% |
| 55974 | Spring Grove | 1,902 | 23 | $59k | $186k | 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?
10 ZIP codes of Fillmore County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Fillmore | Elsewhere |
|---|---|---|
| 55976 | 15% | Olmsted County 83%; Mower County 2% |
| 55975 | 88% | Mower County 12% |
| 55923 | 50% | Olmsted County 46%; Winona County 3% |
| 55971 | 44% | Winona County 38%; Houston County 18% |
| 55974 | 4% | Houston County 96% |
| 55951 | 35% | Mower County 65% |
| 55954 | 88% | Houston County 12% |
| 55979 | 8% | Winona County 92% |
| 55962 | 96% | Winona County 4% |
| 55961 | 26% | Mower County 74% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Fillmore 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 Fillmore County starts with 559.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 559 | St Paul, MN (SCF 550) | 16 | 73 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.