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County ZIP codes · Wisconsin · FIPS 55007

Bayfield County, WI ZIP Codes

Bayfield County, Wisconsin has 16 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 15 residential and 1 for PO boxes or a single organization. 10 of the residential ones lie mainly in Bayfield County and 5 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $57,813 in 54821 (Cable) to $88,359 in 54873 (Solon Springs) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Bayfield County?

54517 · Clam Lake: $74k54806 · Ashland: $65k54814 · Bayfield: $64k54820 · Brule: $85k54821 · Cable: $58k54827 · Cornucopia: $90k54832 · Drummond: $76k54838 · Gordon: $74k54839 · Grand View: $81k54844 · Herbster: $63k54847 · Iron River: $69k54856 · Mason: $77k54865 · Port Wing: $62k54873 · Solon Springs: $88k54891 · Washburn: $71k54873548065485654847548215483854814548205451754865548445483254891548275483954517 · Clam Lake: $74k54806 · Ashland: $65k54814 · Bayfield: $64k54820 · Brule: $85k54821 · Cable: $58k54827 · Cornucopia: $90k54832 · Drummond: $76k54838 · Gordon: $74k54839 · Grand View: $81k54844 · Herbster: $63k54847 · Iron River: $69k54856 · Mason: $77k54865 · Port Wing: $62k54873 · Solon Springs: $88k54891 · Washburn: $71k548735480654856548475482154838548145482054517548655484454832548915483954517 · Clam Lake: $74k54806 · Ashland: $65k54814 · Bayfield: $64k54820 · Brule: $85k54821 · Cable: $58k54827 · Cornucopia: $90k54832 · Drummond: $76k54838 · Gordon: $74k54839 · Grand View: $81k54844 · Herbster: $63k54847 · Iron River: $69k54856 · Mason: $77k54865 · Port Wing: $62k54873 · Solon Springs: $88k54891 · Washburn: $71k5487354806548565484754821548385481454517548655483254891
The residential ZIP codes of Bayfield 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 $63,682 and $74,318.

They carry 15 postal town names.

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

All 15 residential ZIP codes in Bayfield County

10 ZIP codes lie mainly in Bayfield County; 5 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Bayfield County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
54891 Washburn 3,297 48 $71k $209k 100%
54814 Bayfield 2,762 18 $64k $250k 100%
54847 Iron River 2,607 14 $69k $267k 100%
54856 Mason 1,628 8 $77k $194k 98%
54821 Cable 1,625 9 $58k $321k 98%
54865 Port Wing 517 8 $62k $180k 100%
54832 Drummond 453 5 $76k $268k 100%
54839 Grand View 342 8 $81k $159k 100%
54827 Cornucopia 300 8 $90k $264k 100%
54844 Herbster 243 4 $63k $266k 100%

Partly in Bayfield County

Residential ZIP codes mainly in another county that reach at least 1% into Bayfield County, by their share here
In this county
54820 Brule 707 6 $85k $251k 48%
54873 Solon Springs 3,056 12 $88k $253k 36%
54806 Ashland 11,704 41 $65k $186k 33%
54517 Clam Lake 167 2 $74k $423k 12%
54838 Gordon 1,404 6 $74k $250k 2%

Download the 16 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?

7 ZIP codes of Bayfield County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Bayfield County and in the neighboring counties
ZIPIn BayfieldElsewhere
5480633%Ashland County67%
5487336%Douglas County64%
5485698%Ashland County2%
5482198%Sawyer County2%
548382%Douglas County98%
5482048%Douglas County52%
5451712%Ashland County57%; Sawyer County31%

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

PO Box and single-organization ZIP codes

ZIP codes in Bayfield County without a residential area (GeoNames postal codes)
ZIPPostal name
54816Benoit

Source: GeoNames postal codes (CC BY 4.0).

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Bayfield County's ZIP codes use 2 prefixes: 545 and 548.

Three-digit prefixes of Bayfield 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 Bayfield County's
PrefixSectional centerHereAll codes
545Green Bay, WI (SCF 541)147
548Eau Claire, WI (SCF 547)1566

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