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County · code 55051

Iron CountyWisconsin

Iron County is a county in Wisconsin with its seat in Hurley, formed in 1893.

  • Founded1893
  • County seatHurley
  • Named foriron
  • Land area758 sq mi + 161 sq mi water
  • Population6,137 2020 Census
  • Parcels mapped17,963 checked 14 October 2026
Open the free map Click any parcel in Iron County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

AshlandGogebic, MIPriceVilas Hurley Census outline · seat marked

Where it is

Iron on the map of Wisconsin

Wisconsin has 72 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAshland CountyBarron CountyBayfield CountyBrown CountyBuffalo CountyBurnett CountyCalumet CountyChippewa CountyClark CountyColumbia CountyCrawford CountyDane CountyDodge CountyDoor CountyDouglas CountyDunn CountyEau Claire CountyFlorence CountyFond du Lac CountyForest CountyGrant CountyGreen CountyGreen Lake CountyIowa CountyJackson CountyJefferson CountyJuneau CountyKenosha CountyKewaunee CountyLa Crosse CountyLafayette CountyLanglade CountyLincoln CountyManitowoc CountyMarathon CountyMarinette CountyMarquette CountyMenominee CountyMilwaukee CountyMonroe CountyOconto CountyOneida CountyOutagamie CountyOzaukee CountyPepin CountyPierce CountyPolk CountyPortage CountyPrice CountyRacine CountyRichland CountyRock CountyRusk CountySt. Croix CountySauk CountySawyer CountyShawano CountySheboygan CountyTaylor CountyTrempealeau CountyVernon CountyVilas CountyWalworth CountyWashburn CountyWashington CountyWaukesha CountyWaupaca CountyWaushara CountyWinnebago CountyWood CountyIron County Iron
Counties of Wisconsin · Iron highlighted

History

Formed in 1893 from Ashland County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Iron County was created from Ashland County on March 3, 1893, and gained territory from Oneida County on April 15, 1893. The county was named after iron. Michigan's implicit overlap of Iron County ended in 1926 when the U.S. Supreme Court decided a boundary dispute between Michigan and Wisconsin entirely in favor of Wisconsin.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1893
    Iron County created Iron created from Ashland.
    from Ashland
    · Wis. Laws 1893, ch. 8, secs. 1-2, 12/pp. 11-12, 16
  2. 1893
    Gained territory Iron gained from Oneida.
    from Oneida
    · Wis. Laws 1893, ch. 150, secs. 1-2, 12/pp. 175-177, 181
  3. 1903
    Boundary clarified Iron boundaries clarified (no change).
    no change
    · Wis. Laws 1903, ch. 303/p. 475
  4. 1909
    Boundary clarified Michigan implicitly overlapped Iron when Michigan's new state constitution redefined the interstate boundary with Wisconsin across the Upper Peninsula; Iron kept control of the disputed area.
    no change
    · Swindler, 5:249
  5. 1923
    Iron County created Michigan implicitly overlapped Iron when Michigan took its 1909 boundary dispute with Wisconsin to the U.S. Supreme Court and expanded its scope by claiming more territory on the Upper Peninsula and more of the waters and islands of Green Bay. Wisconsin claimed the old, established line and never lost control of the disputed area.
    from U.s.
    · Martin, "Michigan-Wisconsin," 116, 118, 132
  6. 1926
    Changed Michigan's implicit overlap of Iron ended when the U.S. Supreme Court decided the boundary dispute between Michigan and Wisconsin entirely in favor of Wisconsin.
    U.s.
    · Martin, "Michigan-Wisconsin," 141-143

Land and parcels

What the maps cover in Iron

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Iron by the Census

Population
6,137 2020 Census count
Housing units
5,523 2020 Census count
Land area
758 square miles
Water area
161 square miles
People per sq mi
8 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Permits

Zoning and code

County government

See your own lot on these maps

Open Iron County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Iron County

When was Iron County founded?
Iron County was founded in 1893, formed from Ashland County, and named after iron.
What is the county seat of Iron County?
The county seat of Iron County is Hurley.
Is there an online parcel map for Iron County?
Yes. Wisconsin DOA, Wisconsin Land Information Program, with the State Cartographer's Office (V12 Statewide Parcels) publishes a parcel map of 17,963 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Iron County's boundary or name changed?
Iron County was created in 1893 from Ashland County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving U.s. County and Oneida County.
Who issues building permits in Iron County?
The county's page on building permits: Bough Permit. Inside a city or town, ask that city first.
Who issues septic and well permits in Iron County?
The county's page on septic systems and wells: Board of Health.
Is my lot in a flood zone?
We do not have flood maps for Iron County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door