County ZIP codes · Wisconsin · FIPS 55009
Brown County, WI ZIP Codes
Brown County, Wisconsin has 24 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 19 residential and 5 for PO boxes or a single organization. 14 of the residential ones lie mainly in Brown County and 5 mainly in a neighboring county; 10 cross the county line. Median household income ranges from $58,506 in 54302 (Green Bay) to $107,708 in 54173 (Suamico) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Brown 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 $78,684 and $97,135.
They carry 13 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 19 residential ZIP codes in Brown County
14 ZIP codes lie mainly in Brown County; 5 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54115 | De Pere | 50,411 | 407 | $95k | $340k | 85% |
| 54313 | Green Bay | 41,422 | 733 | $108k | $323k | 99% |
| 54311 | Green Bay | 37,879 | 555 | $85k | $301k | 100% |
| 54302 | Green Bay | 30,333 | 3,288 | $59k | $175k | 100% |
| 54304 | Green Bay | 28,502 | 2,444 | $64k | $221k | 100% |
| 54303 | Green Bay | 28,153 | 2,450 | $61k | $179k | 100% |
| 54301 | Green Bay | 21,724 | 3,343 | $79k | $226k | 100% |
| 54155 | Oneida | 7,418 | 235 | $100k | $390k | 50% |
| 54208 | Denmark | 6,231 | 63 | $96k | $301k | 59% |
| 54229 | New Franken | 4,329 | 112 | $97k | $300k | 100% |
| 54126 | Greenleaf | 4,233 | 53 | $99k | $284k | 99% |
| 54173 | Suamico | 3,403 | 239 | $108k | $341k | 100% |
| 54180 | Wrightstown | 3,378 | 571 | $94k | $286k | 85% |
| 54307 | Green Bay | 1,128 | 13,429 | – | – | 100% |
Partly in Brown County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 54162 | Pulaski | 9,596 | 86 | $81k | $265k | 22% |
| 54217 | Luxemburg | 8,022 | 72 | $90k | $285k | 12% |
| 54130 | Kaukauna | 28,380 | 364 | $89k | $261k | 10% |
| 54110 | Brillion | 5,591 | 87 | $74k | $224k | 3% |
| 54165 | Seymour | 7,786 | 78 | $87k | $247k | 1% |
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?
11 ZIP codes of Brown County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Brown | Elsewhere |
|---|---|---|
| 54115 | 85% | Outagamie County 15% |
| 54313 | 99% | Outagamie County 1% |
| 54130 | 10% | Outagamie County 79%; Calumet County 11% |
| 54162 | 22% | Shawano County 61%; Oconto County 16% |
| 54217 | 12% | Kewaunee County 80%; Door County 8% |
| 54165 | 1% | Outagamie County 88%; Shawano County 11% |
| 54155 | 50% | Outagamie County 50% |
| 54208 | 59% | Kewaunee County 29%; Manitowoc County 12% |
| 54110 | 3% | Calumet County 73%; Manitowoc County 24% |
| 54126 | 99% | |
| 54180 | 85% | Outagamie County 15% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Brown County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Brown County's ZIP codes use 3 prefixes: 541, 542 and 543.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 541 | Green Bay, WI (SCF 541) | 9 | 56 |
| 542 | Green Bay, WI (SCF 541) | 3 | 30 |
| 543 | Green Bay, WI (SCF 541) | 12 | 12 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.