| ZIP Codes: | 20 ZIP Codes (14 Standard, 5 PO Box, 1 Unique) [See All] |
| Area Codes: | 274 / 715 / 920 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:14:17 PM |
| Population: | 278,140 [See All] |
| FIPS: | 55009 |
| CBSA: | Green Bay, WI |
| Land Area: | 683 sq mi |
| Water Area: | 16 sq mi |
| Coordinates: | 44.4946, -88.0381 |
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278,140 residents live across 20 ZIPs covering 683 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 260,470 to 278,140 from 2014 to 2024 — a +6.8% change. 11 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 54173 (Suamico, $107,708 median) and poorest ZIP 54302 (Green Bay, $58,506) are 9.0 miles apart — a 1.8× income gap across local geography.
Median home values vary 2.2× across this county — from $175,300 in 54302 (Green Bay) to $389,700 in 54155 (Oneida).
Density varies 57× across the county — from 53 people/sq mi in 54126 (Greenleaf) to 3,046 in 54302 (Green Bay).
Educational attainment ranges from 19.3% bachelor's+ in 54303 (Green Bay) to 46.0% in 54155 (Oneida) — the breadth of educational profiles across the area.
Within Wisconsin, this is the #4 most populous of 73 counties and ranks #11 for median household income with the #12 fastest decade growth .
Hosts 1 single-entity Unique ZIP: 54344Employers Health Insure Cos .
Weighted by population, the typical household earns about $83,380 across the county — reflecting what a typical resident sees, not a simple ZIP average.
33.1% of adults age 25+ hold a bachelor's degree or higher (62,446 of 188,451 reporting).
14 Standard delivery, 5 PO Box only, 1 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 54115 | De Pere | Standard | 50,411 | $94,721 | 127.7 | 18.7% |
| 54313 | Green Bay | Standard | 41,422 | $107,599 | 55.8 | 11.1% |
| 54311 | Green Bay | Standard | 37,879 | $84,914 | 64.6 | 7.9% |
| 54302 | Green Bay | Standard | 30,333 | $58,506 | 10.0 | 2.1% |
| 54304 | Green Bay | Standard | 28,502 | $63,865 | 12.2 | 0.6% |
| 54303 | Green Bay | Standard | 28,153 | $60,781 | 11.7 | 0.2% |
| 54301 | Green Bay | Standard | 21,724 | $78,684 | 7.3 | -1.9% |
| 54162 | Pulaski | Standard | 9,596 | $80,594 | 121.2 | 11.2% |
| 54155 | Oneida | Standard | 7,418 | $99,597 | 30.5 | 16.2% |
| 54208 | Denmark | Standard | 6,231 | $95,509 | 100.6 | -1.0% |
| 54229 | New Franken | Standard | 4,329 | $97,135 | 39.6 | 7.0% |
| 54126 | Greenleaf | Standard | 4,233 | $99,310 | 79.7 | 10.1% |
| 54173 | Suamico | Standard | 3,403 | $107,708 | 15.1 | -9.7% |
| 54180 | Wrightstown | Standard | 3,378 | $94,375 | 6.7 | 7.8% |
| 54307 | Green Bay | PO Box | 1,128 | — | 0.0 | -9.0% |
| 54344 | Green Bay | Unique | — | — | 0.0 | — |
| 54324 | Green Bay | PO Box | — | — | 0.0 | — |
| 54305 | Green Bay | PO Box | — | — | 0.0 | — |
| 54306 | Green Bay | PO Box | — | — | 0.0 | — |
| 54308 | Green Bay | PO Box | — | — | 0.0 | — |