ZIP Codes of Marquette County, WI

Population & People
Population & People
Total Population
18,188
Household Income
Household Income
Median Income
$64,679
Housing
Housing
Total Housing Units
11,569
Business & Economy
Business & Economy
Total Businesses
297
Employment
Employment
Employment Rate
50.98%
Education
Education
Bachelor's Degree+
15.88%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 7 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:7 ZIP Codes (6 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:274 / 353 / 608 / 920
Timezone:Central (GMT -06:00)
Local Time:2:14:19 PM
Population:18,188 [See All]
FIPS:55077
Land Area:536 sq mi
Water Area:11 sq mi
Coordinates:43.7911, -89.4531
Quick Link:
https://www.zip-codes.com/county/wi-marquette.asp
Need Marquette data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Wisconsin's #56 most populous county
18,188 residents across 7 ZIPs — #56 of 73 Wisconsin counties.

Standout ZIPs in this County


Most Populous
Montello · 6,292 people
34.6% of county total
Highest Income
Endeavor · $72,778 median
1.1× county average
Largest Land Area
Montello · 173.8 sq mi
Spans the most ground
Fastest Growth
Neshkoro · 15.8% (10-yr)
2,587 → 2,997 residents
Most Educated
Neshkoro · 19.0% bachelor's+
454 of 2,395 adults 25+

Things worth knowing about Marquette County


18,188 residents live across 7 ZIPs covering 536 sq mi, served by 7 distinct USPS-recognized cities.

Population moved from 17,495 to 18,188 from 2014 to 2024 — a +4.0% change. 4 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 53930 (Endeavor, $72,778 median) and poorest ZIP 53953 (Packwaukee, $46,250) are 5.1 miles apart — a 1.6× income gap across local geography.

Median home values vary 2.1× across this county — from $114,800 in 53953 (Packwaukee) to $243,500 in 53920 (Briggsville).

Density varies 165× across the county — from 29 people/sq mi in 53964 (Westfield) to 4,819 in 53953 (Packwaukee).

Educational attainment ranges from 1.3% bachelor's+ in 53953 (Packwaukee) to 20.1% in 53930 (Endeavor) — the breadth of educational profiles across the area.

Within Wisconsin, this is the #56 most populous of 73 counties and ranks #60 for median household income .

Weighted by population, the typical household earns about $66,125 across the county — reflecting what a typical resident sees, not a simple ZIP average.

15.9% of adults age 25+ hold a bachelor's degree or higher (2,234 of 14,071 reporting).

6 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Marquette County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
536
square miles
Avg density
33.9
people per sq mi
Population
18,188
across 7 ZIPs
Montello
173.8 sq mi
6,292 residents
Westfield
115.4 sq mi
3,371 residents
Oxford
103.2 sq mi
3,524 residents

All ZIP Codes in Marquette County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
53949MontelloStandard6,292$64,611173.86.0%
53952OxfordStandard3,524$63,750103.24.1%
53964WestfieldStandard3,371$69,306115.4-8.5%
54960NeshkoroStandard2,997$66,62595.215.8%
53930EndeavorStandard1,192$72,77839.3-1.4%
53920BriggsvilleStandard599$69,4328.949.4%
53953PackwaukeePO Box213$46,2500.0-27.8%

Adjacent & Nearby Counties