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County ZIP codes · Wisconsin · FIPS 55085

Oneida County, WI ZIP Codes

Oneida County, Wisconsin has 15 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 14 residential and 1 for PO boxes or a single organization. 8 of the residential ones lie mainly in Oneida County and 6 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $51,429 in 54538 (Lac Du Flambeau) to $84,286 in 54531 (Hazelhurst) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Oneida County?

54428 · Elcho: $49k54463 · Pelican Lake: $59k54487 · Tomahawk: $72k54501 · Rhinelander: $68k54521 · Eagle River: $74k54529 · Harshaw: $72k54531 · Hazelhurst: $84k54538 · Lac Du Flambeau: $51k54539 · Lake Tomahawk: $63k54548 · Minocqua: $70k54558 · Saint Germain: $60k54562 · Three Lakes: $57k54564 · Tripoli: $57k54568 · Woodruff: $73k544875450154521545645456254538545485453154428545295456854463545395455854428 · Elcho: $49k54463 · Pelican Lake: $59k54487 · Tomahawk: $72k54501 · Rhinelander: $68k54521 · Eagle River: $74k54529 · Harshaw: $72k54531 · Hazelhurst: $84k54538 · Lac Du Flambeau: $51k54539 · Lake Tomahawk: $63k54548 · Minocqua: $70k54558 · Saint Germain: $60k54562 · Three Lakes: $57k54564 · Tripoli: $57k54568 · Woodruff: $73k544875450154521545645456254538545485453154428545295456854463545395455854428 · Elcho: $49k54463 · Pelican Lake: $59k54487 · Tomahawk: $72k54501 · Rhinelander: $68k54521 · Eagle River: $74k54529 · Harshaw: $72k54531 · Hazelhurst: $84k54538 · Lac Du Flambeau: $51k54539 · Lake Tomahawk: $63k54548 · Minocqua: $70k54558 · Saint Germain: $60k54562 · Three Lakes: $57k54564 · Tripoli: $57k54568 · Woodruff: $73k5448754501545215456454562545385454854531544285452954568544635453954558
The residential ZIP codes of Oneida County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

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 $62,841 and $72,416.

They carry 14 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 14 residential ZIP codes in Oneida County

8 ZIP codes lie mainly in Oneida County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Oneida County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
54501 Rhinelander 21,405 58 $68k $204k 98%
54548 Minocqua 5,676 57 $70k $336k 82%
54562 Three Lakes 2,038 14 $57k $326k 63%
54531 Hazelhurst 1,385 22 $84k $345k 100%
54539 Lake Tomahawk 1,356 24 $63k $282k 100%
54529 Harshaw 1,220 17 $72k $268k 100%
54463 Pelican Lake 746 8 $59k $244k 98%
54564 Tripoli 393 2 $57k $184k 65%

Partly in Oneida County

Residential ZIP codes mainly in another county that reach at least 1% into Oneida County, by their share here
In this county
54521 Eagle River 8,551 45 $74k $305k 30%
54487 Tomahawk 9,562 33 $72k $228k 26%
54558 Saint Germain 2,262 52 $60k $261k 24%
54568 Woodruff 4,854 68 $73k $281k 14%
54538 Lac Du Flambeau 3,025 29 $51k $320k 10%
54428 Elcho 975 14 $49k $215k 4%

Download the 15 ZIP codes as CSV

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 Oneida County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Oneida County and in the neighboring counties
ZIPIn OneidaElsewhere
5450198%Lincoln County 2%
5448726%Lincoln County 74%
5452130%Vilas County 64%; Forest County 5%
5454882%Vilas County 18%
5456814%Vilas County 86%
5453810%Vilas County 77%; Iron County 12%
5455824%Vilas County 76%
5456263%Forest County 37%
544284%Langlade County 96%
5446398%Langlade County 2%
5456465%Lincoln County 34%; Price County 1%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

PO Box and single-organization ZIP codes

ZIP codes in Oneida County without a residential area (GeoNames postal codes)
ZIPPostal name
54543McNaughton

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Oneida County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Oneida County's ZIP codes use 2 prefixes: 544 and 545.

Three-digit prefixes of Oneida County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Oneida County's
PrefixSectional centerHereAll codes
544 Green Bay, WI (SCF 541) 3 86
545 Green Bay, WI (SCF 541) 12 47

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.