County ZIP codes · Wisconsin · FIPS 55003
Ashland County, WI ZIP Codes
Ashland County, Wisconsin has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Ashland County and 2 mainly in a neighboring county; 5 cross the county line. Median household income ranges from $64,864 in 54806 (Ashland) to $76,500 in 54856 (Mason) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Ashland 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 $64,864 and $70,769.
They carry 11 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 11 residential ZIP codes in Ashland County
9 ZIP codes lie mainly in Ashland County; 2 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54806 | Ashland | 11,704 | 41 | $65k | $186k | 67% |
| 54514 | Butternut | 1,827 | 8 | $71k | $165k | 81% |
| 54546 | Mellen | 1,332 | 6 | $70k | $142k | 100% |
| 54527 | Glidden | 932 | 5 | $56k | $121k | 100% |
| 54855 | Marengo | 924 | 13 | $57k | $205k | 100% |
| 54846 | High Bridge | 650 | 20 | $74k | $175k | 100% |
| 54850 | La Pointe | 321 | 4 | $71k | $279k | 100% |
| 54517 | Clam Lake | 167 | 2 | $74k | $423k | 57% |
| 54861 | Odanah | 122 | 93 | – | – | 100% |
Partly in Ashland County
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?
5 ZIP codes of Ashland County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Ashland | Elsewhere |
|---|---|---|
| 54806 | 67% | Bayfield County33% |
| 54514 | 81% | Price County13%; Iron County6% |
| 54856 | 2% | Bayfield County98% |
| 54559 | 15% | Iron County85% |
| 54517 | 57% | Sawyer County31%; Bayfield County12% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
Which first three digits do Ashland County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Ashland County's ZIP codes use 2 prefixes: 545 and 548.
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.