County ZIP codes · Wisconsin · FIPS 55073
Marathon County, WI ZIP Codes
Marathon County, Wisconsin has 31 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 28 residential and 3 for PO boxes or a single organization. 16 of the residential ones lie mainly in Marathon County and 12 mainly in a neighboring county; 18 cross the county line. Median household income ranges from $53,576 in 54409 (Antigo) to $96,140 in 54455 (Mosinee) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Marathon 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 $67,669 and $80,038.
They carry 27 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 28 residential ZIP codes in Marathon County
16 ZIP codes lie mainly in Marathon County; 12 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54401 | Wausau | 31,692 | 377 | $72k | $197k | 100% |
| 54403 | Wausau | 24,950 | 187 | $69k | $193k | 100% |
| 54476 | Schofield | 19,377 | 461 | $78k | $224k | 100% |
| 54455 | Mosinee | 19,025 | 81 | $96k | $251k | 93% |
| 54484 | Stratford | 5,529 | 52 | $72k | $249k | 100% |
| 54411 | Athens | 5,028 | 27 | $77k | $223k | 94% |
| 54474 | Rothschild | 4,589 | 915 | $82k | $194k | 100% |
| 54448 | Marathon | 4,280 | 47 | $94k | $247k | 100% |
| 54426 | Edgar | 4,275 | 40 | $79k | $218k | 100% |
| 54421 | Colby | 3,468 | 50 | $61k | $195k | 55% |
| 54405 | Abbotsford | 2,770 | 93 | $70k | $178k | 75% |
| 54440 | Hatley | 2,662 | 32 | $91k | $223k | 100% |
| 54471 | Ringle | 1,636 | 37 | $87k | $290k | 100% |
| 54408 | Aniwa | 1,247 | 25 | $73k | $165k | 87% |
| 54427 | Eland | 1,156 | 26 | $84k | $190k | 76% |
| 54417 | Brokaw | 4 | 10 | – | – | 100% |
Partly in Marathon County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54488 | Unity | 1,275 | 33 | $64k | $142k | 46% |
| 54479 | Spencer | 3,630 | 47 | $77k | $183k | 44% |
| 54414 | Birnamwood | 3,208 | 24 | $73k | $200k | 39% |
| 54412 | Auburndale | 2,122 | 30 | $84k | $217k | 35% |
| 54425 | Dorchester | 1,988 | 48 | $63k | $175k | 31% |
| 54499 | Wittenberg | 2,896 | 26 | $64k | $184k | 30% |
| 54449 | Marshfield | 26,183 | 152 | $68k | $212k | 28% |
| 54473 | Rosholt | 2,472 | 29 | $80k | $245k | 24% |
| 54452 | Merrill | 18,969 | 43 | $68k | $174k | 11% |
| 54409 | Antigo | 12,639 | 61 | $54k | $123k | 8% |
| 54480 | Stetsonville | 1,386 | 39 | $68k | $180k | 8% |
| 54451 | Medford | 11,198 | 33 | $71k | $214k | 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?
18 ZIP codes of Marathon County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Marathon | Elsewhere |
|---|---|---|
| 54449 | 28% | Wood County 71% |
| 54455 | 93% | Portage County 7% |
| 54452 | 11% | Lincoln County 89% |
| 54409 | 8% | Langlade County 88%; Shawano County 4% |
| 54451 | 2% | Taylor County 98% |
| 54411 | 94% | Taylor County 6% |
| 54479 | 44% | Clark County 56% |
| 54421 | 55% | Clark County 45% |
| 54414 | 39% | Shawano County 61% |
| 54499 | 30% | Shawano County 69%; Portage County 2% |
| 54405 | 75% | Clark County 25% |
| 54473 | 24% | Portage County 76% |
| 54412 | 35% | Wood County 65% |
| 54425 | 31% | Clark County 58%; Taylor County 11% |
| 54480 | 8% | Taylor County 92% |
| 54488 | 46% | Clark County 54% |
| 54408 | 87% | Shawano County 9%; Langlade County 4% |
| 54427 | 76% | Shawano County 24% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 54402 | Wausau |
| 54429 | Elderon |
| 54432 | Galloway |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Marathon 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 Marathon County starts with 544.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 544 | Green Bay, WI (SCF 541) | 31 | 86 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.