County ZIP codes · Wisconsin · FIPS 55095
Polk County, WI ZIP Codes
Polk County, Wisconsin has 20 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 14 of the residential ones lie mainly in Polk County and 6 mainly in a neighboring county; 13 cross the county line. Median household income ranges from $53,901 in 54858 (Milltown) to $98,571 in 54017 (New Richmond) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Polk 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 $67,148 and $80,344.
They carry 20 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 20 residential ZIP codes in Polk County
14 ZIP codes lie mainly in Polk County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54001 | Amery | 7,906 | 67 | $80k | $287k | 100% |
| 54020 | Osceola | 7,687 | 104 | $75k | $307k | 99% |
| 54024 | Saint Croix Falls | 5,035 | 60 | $75k | $272k | 100% |
| 54837 | Frederic | 3,803 | 22 | $71k | $222k | 82% |
| 54853 | Luck | 3,506 | 40 | $75k | $245k | 96% |
| 54005 | Clear Lake | 3,264 | 39 | $88k | $274k | 65% |
| 54810 | Balsam Lake | 2,849 | 61 | $70k | $272k | 100% |
| 54889 | Turtle Lake | 2,837 | 39 | $77k | $257k | 55% |
| 54009 | Dresser | 2,739 | 82 | $90k | $249k | 100% |
| 54026 | Star Prairie | 2,361 | 85 | $96k | $342k | 76% |
| 54824 | Centuria | 1,950 | 50 | $67k | $225k | 100% |
| 54858 | Milltown | 1,636 | 93 | $54k | $213k | 100% |
| 54826 | Comstock | 922 | 20 | $95k | $267k | 55% |
| 54006 | Cushing | 852 | 31 | $70k | $204k | 100% |
Partly in Polk County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54004 | Clayton | 2,192 | 28 | $68k | $241k | 33% |
| 54829 | Cumberland | 5,446 | 38 | $67k | $246k | 25% |
| 54007 | Deer Park | 1,175 | 26 | $85k | $309k | 22% |
| 54840 | Grantsburg | 4,775 | 19 | $64k | $186k | 12% |
| 54872 | Siren | 2,569 | 40 | $61k | $233k | 6% |
| 54017 | New Richmond | 20,366 | 146 | $99k | $322k | 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?
13 ZIP codes of Polk County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Polk | Elsewhere |
|---|---|---|
| 54017 | 3% | St. Croix County 97% |
| 54020 | 99% | St. Croix County 1% |
| 54829 | 25% | Barron County 75% |
| 54840 | 12% | Burnett County 88% |
| 54837 | 82% | Burnett County 18% |
| 54853 | 96% | Burnett County 4% |
| 54005 | 65% | St. Croix County 20%; Barron County 8%; Dunn County 7% |
| 54889 | 55% | Barron County 45% |
| 54872 | 6% | Burnett County 94% |
| 54026 | 76% | St. Croix County 24% |
| 54004 | 33% | Barron County 67% |
| 54007 | 22% | St. Croix County 78% |
| 54826 | 55% | Barron County 45% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Polk County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Polk County's ZIP codes use 2 prefixes: 540 and 548.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.