Sales tax rates · ZIP code · Wisconsin

ZIP code 54937 sales tax rates

ZIP code 54937 spans 14 different sets of sales tax jurisdictions in Wisconsin's Streamlined Sales Tax files on 2026-10-22, so there is no single sales tax rate for the ZIP code. Every candidate with a complete rate sums to 5.5% (general rate), but the jurisdictions differ. Look up the full street address (or ZIP+4) to find which one applies.

Accuracy: 5-digit ZIP code.

A published rate is not the tax due on a sale: taxability, sourcing, nexus and exemptions all change what is owed.

Data as of Oct 21, 2026 (Olympus publication) · Markdown version

These are published sales and use tax rates by jurisdiction. They are not the tax due on a transaction and not a taxability determination: whether an item is taxable, which location's rate applies (sourcing), whether the seller must collect (nexus) and any exemption all change what is owed. Rates come from the Streamlined Sales Tax files the states publish or, where a result's source says so, from the state revenue department's own files and pages; confirm with the state before relying on them.
This location matches 14 different jurisdiction sets, so no single rate is returned. Send a full street address or ZIP+4 to narrow it down. The candidate marked sst_default carries the jurisdictions the state's file assigns to the ZIP as a whole (states assign the lowest combined rate there); it is not necessarily the rate at a given address.
Wisconsin's boundary file shortens street names to 20 characters, so a longer street name can match only at ZIP+4 or ZIP level.

Candidate 1 of 14: 5.5% combined

Wisconsin: assigned by 37 address ranges, 54 ZIP+4 ranges, 1 5-digit ZIP record in the boundary file WIB2026Q4AUG17. This is the set the state's 5-digit ZIP record assigns to the ZIP as a whole (states give that record the lowest combined rate in the ZIP); it is not necessarily the rate at a given address.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 2 of 14: 5.5% combined

Wisconsin: assigned by 210 address ranges, 69 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 11600	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 3 of 14: 5.5% combined

Wisconsin: assigned by 14 address ranges, 6 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 12075	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 4 of 14: 5.5% combined

Wisconsin: assigned by 32 address ranges, 23 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 22500	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 5 of 14: 5.5% combined

Wisconsin: assigned by 25 address ranges, 13 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 23150	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 6 of 14: 5.5% combined

Wisconsin: assigned by 402 address ranges, 126 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 24050	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 7 of 14: 5.5% combined

Wisconsin: assigned by 364 address ranges, 133 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 26275	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 8 of 14: 5.5% combined

Wisconsin: assigned by 264 address ranges, 139 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 26300	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 9 of 14: 5.5% combined

Wisconsin: assigned by 36 address ranges, 17 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 26450	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 10 of 14: 5.5% combined

Wisconsin: assigned by 185 address ranges, 75 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 27975	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 11 of 14: 5.5% combined

Wisconsin: assigned by 109 address ranges, 41 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 42125	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 12 of 14: 5.5% combined

Wisconsin: assigned by 457 address ranges, 110 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 58000	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 13 of 14: 5.5% combined

Wisconsin: assigned by 1 address range, 1 ZIP+4 range in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 58925	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Candidate 14 of 14: 5.5% combined

Wisconsin: assigned by 207 address ranges, 83 ZIP+4 ranges in the boundary file WIB2026Q4AUG17.

Jurisdiction	Level	General rate	General rate, interstate	Food and drug rate	Effective from	Source file
Wisconsin (state)	state	5%	5%	5%	1980-01-01	WIR2026Q4AUG17 (2026-09-01)
Fond du Lac County	county	0.5%	0.5%	0.5%	2010-04-01	WIR2026Q4AUG17 (2026-09-01)
City 79125	city	0%	0%	0%	2023-09-18	WIR2026Q4AUG17 (2026-09-01)
Combined (sum of the rates above)		5.5%	5.5%	5.5%

Accuracy: 5-digit ZIP code.

Sources

Streamlined Sales Tax rate file, Wisconsin — Streamlined Sales Tax Governing Board (file posted by the state). WIR2026Q4AUG17.csv, effective quarter 2026Q4, source date 2026-09-01. https://www.streamlinedsalestax.org/ratesandboundry/Rates/WIR2026Q4AUG17.csv
Streamlined Sales Tax boundary file, Wisconsin — Streamlined Sales Tax Governing Board (file posted by the state). WIB2026Q4AUG17.zip, effective quarter 2026Q4, source date 2026-09-01. https://www.streamlinedsalestax.org/ratesandboundry/Boundary/WIB2026Q4AUG17.zip
Published by Olympus on Oct 21, 2026.
Source: the Streamlined Sales Tax Governing Board rate and boundary files, as posted by each member state. The Streamlined Sales Tax Governing Board does not certify Olympus or its use of the data; Olympus is not a Certified Service Provider.

Get this data from the API

The same figures, with provenance on every value, from the API (free API key, reference) or from an AI agent through the Olympus MCP server.

curl

curl -s "https://api.olympus.new-odyssey.com/v1/sales-tax/rates/zip/54937" -H "X-API-Key: $OLYMPUS_API_KEY"

Try it without a key (keyless demo, a few requests per minute)

curl -s "https://api.olympus.new-odyssey.com/v1/sales-tax/rates/zip/54937"

MCP tool call

lookup_us_sales_tax {"zip":"54937"}

Look up a street address in this ZIP code — free, no sign-up
Wisconsin: every sales tax rate