ZIP Codes of Oneida County, WI

Population & People
Population & People
Total Population
39,073
Household Income
Household Income
Median Income
$67,006
Housing
Housing
Total Housing Units
31,419
Business & Economy
Business & Economy
Total Businesses
1,455
Employment
Employment
Employment Rate
53.97%
Education
Education
Bachelor's Degree+
29.16%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 10 ZIPs in this county.
Data Last Updated: July 1, 2026
ZIP Codes:10 ZIP Codes (9 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:534 / 715
Timezone:Central (GMT -06:00)
Local Time:11:55:39 PM
Population:39,073 [See All]
FIPS:55085
Land Area:1,316 sq mi
Water Area:129 sq mi
Coordinates:45.7325, -89.5766
Quick Link:
https://www.zip-codes.com/county/wi-oneida.asp
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Wisconsin's #36 most populous county
39,073 residents across 10 ZIPs — #36 of 73 Wisconsin counties.

Standout ZIPs in this County


Most Populous
Rhinelander · 21,405 people
54.8% of county total
Highest Income
Hazelhurst · $84,286 median
1.3× county average
Largest Land Area
Rhinelander · 392.8 sq mi
Spans the most ground
Fastest Growth
Minocqua · 19.8% (10-yr)
4,738 → 5,676 residents
Most Educated
Three Lakes · 38.7% bachelor's+
616 of 1,590 adults 25+

Things worth knowing about Oneida County


39,073 residents live across 10 ZIPs covering 1,316 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 36,407 to 39,073 from 2014 to 2024 — a +7.3% change. 6 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 54531 (Hazelhurst, $84,286 median) and poorest ZIP 54564 (Tripoli, $56,875) are 10.4 miles apart — a 1.5× income gap across local geography.

Median home values vary 1.9× across this county — from $184,000 in 54564 (Tripoli) to $344,900 in 54531 (Hazelhurst).

Density varies 37× across the county — from 2 people/sq mi in 54564 (Tripoli) to 59 in 54568 (Woodruff).

Educational attainment ranges from 10.4% bachelor's+ in 54564 (Tripoli) to 38.7% in 54562 (Three Lakes) — the breadth of educational profiles across the area.

Within Wisconsin, this is the #36 most populous of 73 counties and ranks #57 for median household income with the #9 fastest decade growth .

Weighted by population, the typical household earns about $68,581 across the county — reflecting what a typical resident sees, not a simple ZIP average.

29.2% of adults age 25+ hold a bachelor's degree or higher (8,749 of 30,006 reporting).

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

Stories about Oneida 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
1,316
square miles
Avg density
29.7
people per sq mi
Population
39,073
across 10 ZIPs
Rhinelander
392.8 sq mi
21,405 residents
Tripoli
246.9 sq mi
393 residents
Three Lakes
172.9 sq mi
2,038 residents

All ZIP Codes in Oneida County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
54501RhinelanderStandard21,405$68,163392.87.4%
54548MinocquaStandard5,676$69,569109.719.8%
54568WoodruffStandard4,854$72,58982.2-3.3%
54562Three LakesStandard2,038$57,422172.916.3%
54531HazelhurstStandard1,385$84,28681.4-2.1%
54539Lake TomahawkStandard1,356$62,84169.59.4%
54529HarshawStandard1,220$72,00068.012.4%
54463Pelican LakeStandard746$59,31092.33.8%
54564TripoliStandard393$56,875246.9-22.3%
54543Mc NaughtonPO Box0.6

Adjacent & Nearby Counties