County ZIP codes · Minnesota · FIPS 27095
Mille Lacs County, MN ZIP Codes
Mille Lacs County, Minnesota has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 7 of the residential ones lie mainly in Mille Lacs County and 5 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $59,457 in 56359 (Onamia) to $114,531 in 56357 (Oak Park) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Mille Lacs 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 $63,295 and $84,519.
They carry 12 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 12 residential ZIP codes in Mille Lacs County
7 ZIP codes lie mainly in Mille Lacs County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 55371 | Princeton | 18,103 | 92 | $94k | $327k | 42% |
| 56353 | Milaca | 9,546 | 50 | $79k | $263k | 95% |
| 56359 | Onamia | 3,521 | 21 | $60k | $232k | 100% |
| 56330 | Foreston | 2,097 | 53 | $85k | $278k | 63% |
| 56386 | Wahkon | 661 | 37 | $55k | $278k | 100% |
| 56363 | Pease | 238 | 214 | $68k | $176k | 100% |
| 56313 | Bock | 49 | 340 | $48k | $145k | 100% |
Partly in Mille Lacs County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 56342 | Isle | 2,788 | 14 | $63k | $247k | 21% |
| 56357 | Oak Park | 1,230 | 34 | $115k | $294k | 21% |
| 55051 | Mora | 9,935 | 46 | $69k | $225k | 14% |
| 56358 | Ogilvie | 3,107 | 25 | $84k | $261k | 13% |
| 56450 | Garrison | 983 | 37 | $61k | $197k | 8% |
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?
8 ZIP codes of Mille Lacs County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Mille Lacs | Elsewhere |
|---|---|---|
| 55371 | 42% | Sherburne County 30%; Isanti County 26%; Benton County 2% |
| 55051 | 14% | Kanabec County 86% |
| 56353 | 95% | Isanti County 3%; Kanabec County 3% |
| 56358 | 13% | Kanabec County 82%; Isanti County 4% |
| 56342 | 21% | Aitkin County 40%; Kanabec County 39% |
| 56330 | 63% | Benton County 37% |
| 56357 | 21% | Benton County 79% |
| 56450 | 8% | Crow Wing County 92% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Mille Lacs County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Mille Lacs County's ZIP codes use 4 prefixes: 550, 553, 563 and 564.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 550 | St Paul, MN (SCF 550) | 1 | 74 |
| 553 | Minneapolis, MN (SCF 553) | 1 | 93 |
| 563 | Saint Cloud, MN (SCF 563) | 9 | 83 |
| 564 | Saint Cloud, MN (SCF 563) | 1 | 43 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.