County ZIP codes · Minnesota · FIPS 27009
Benton County, MN ZIP Codes
Benton County, Minnesota has 10 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 9 residential and 1 for PO boxes or a single organization. 4 of the residential ones lie mainly in Benton County and 5 mainly in a neighboring county; 8 cross the county line. Median household income ranges from $58,148 in 56304 (Saint Cloud) to $114,531 in 56357 (Oak Park) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Benton 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 $84,519 and $93,824.
They carry 9 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 9 residential ZIP codes in Benton County
4 ZIP codes lie mainly in Benton County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 56379 | Sauk Rapids | 17,607 | 197 | $76k | $272k | 100% |
| 56329 | Foley | 7,778 | 41 | $93k | $282k | 88% |
| 56367 | Rice | 7,209 | 71 | $102k | $286k | 83% |
| 56357 | Oak Park | 1,230 | 34 | $115k | $294k | 79% |
Partly in Benton County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 56330 | Foreston | 2,097 | 53 | $85k | $278k | 37% |
| 56304 | Saint Cloud | 17,473 | 288 | $58k | $252k | 13% |
| 56373 | Royalton | 3,329 | 33 | $91k | $303k | 9% |
| 56377 | Sartell | 21,063 | 942 | $87k | $302k | 3% |
| 55371 | Princeton | 18,103 | 92 | $94k | $327k | 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?
8 ZIP codes of Benton County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Benton | Elsewhere |
|---|---|---|
| 56377 | 3% | Stearns County 97% |
| 55371 | 2% | Mille Lacs County 42%; Sherburne County 30%; Isanti County 26% |
| 56304 | 13% | Sherburne County 87% |
| 56329 | 88% | Morrison County 12% |
| 56367 | 83% | Stearns County 17% |
| 56373 | 9% | Morrison County 91% |
| 56330 | 37% | Mille Lacs County 63% |
| 56357 | 79% | Mille Lacs County 21% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 56333 | Gilman |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Benton County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Benton County's ZIP codes use 2 prefixes: 553 and 563.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.