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County · code 55019

Clark CountyWisconsin

Clark County is a Wisconsin county with its seat in Neillsville, formed in 1853.

  • Founded1853
  • County seatNeillsville
  • Named forGeorge Rogers Clark
  • Land area1,210 sq mi + 9 sq mi water
  • Population34,659 2020 Census
  • Parcels mapped36,344 checked 15 October 2026
Open the free map Click any parcel in Clark County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

JacksonTaylorWoodEau ClaireChippewaMarathon Neillsville Census outline · seat marked

Where it is

Clark 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 CountyColumbia CountyCrawford CountyDane CountyDodge CountyDoor CountyDouglas CountyDunn CountyEau Claire CountyFlorence CountyFond du Lac CountyForest CountyGrant CountyGreen CountyGreen Lake CountyIowa CountyIron 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 CountyClark County Clark
Counties of Wisconsin · Clark highlighted

History

Formed in 1853 from Jackson County and La Crosse County

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

Clark County was created from Jackson County and La Crosse County on July 6, 1853. The county was named after George Rogers Clark. Clark was not fully organized until 1854, and over its early years it was repeatedly attached to Jackson County for judicial purposes before becoming fully independent in 1857. In 1875, Clark County lost territory to the creation of Taylor County.

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

  1. 1853
    Clark County created Clark created from Jackson; Clark not fully organized, attached to Jackson "for judicial purposes." Clark was implicitly attached to La Crosse, through Jackson, until 1 September 1853.
    from Jacksonfrom La Crosse
    · Wis. Laws 1853, gen., ch. 100, secs. 1-3/pp. 98-99
  2. 1853
    Changed Jackson fully organized, detached from La Crosse. Clark remained attached to Jackson.
    JacksonLa Crosse
    · Wis. Laws 1853, gen., ch. 8, secs. 1-2, 5-6/pp. 7-8
  3. 1854
    Changed Clark fully organized, detached from Jackson.
    Jackson
    · Wis. Laws 1853, gen., ch. 100, secs. 1-3/pp. 98-99
  4. 1854
    Gained territory Clark gained from Chippewa and Jackson; Clark re-attached to Jackson "for judicial purposes."
    from Chippewafrom Jackson
    · Wis. Laws 1854, gen., ch. 100, secs. 1, 4, 6/pp. 143-144
  5. 1857
    Changed Clark fully organized, detached from Jackson.
    Jackson
    · Wis. Laws 1856, reg. sess., gen., ch. 96, secs. 1-2, 6/pp. 101-102
  6. 1875
    Lost territory Clark lost to creation of Taylor.
    to Taylor
    · Wis. Laws 1875, ch. 178, secs. 1-3, 11/pp. 297-300

Land and parcels

What the maps cover in Clark

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

Clark by the Census

Population
34,659 2020 Census count
Housing units
14,755 2020 Census count
Land area
1,210 square miles
Water area
9 square miles
People per sq mi
29 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.

Permits

Zoning and code

County government

See your own lot on these maps

Open Clark 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 Clark County

When was Clark County founded?
Clark County was founded in 1853, formed from Jackson County and La Crosse County, and named after George Rogers Clark.
What is the county seat of Clark County?
The county seat of Clark County is Neillsville.
Is there an online parcel map for Clark County?
Yes. A public source publishes a parcel map of 36,344 parcels, rated fallback here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Clark County's boundary or name changed?
Clark County was created in 1853 from Jackson County and La Crosse County. Since then the Atlas of Historical County Boundaries records 5 later changes, chiefly involving Jackson County, Chippewa County and La Crosse County.
Who issues building permits in Clark County?
The county's page on building permits: Public Permits Search Portal. Inside a city or town, ask that city first.
Who issues septic and well permits in Clark County?
The county's page on septic systems and wells: Health department: septic and well.
Is my lot in a flood zone?
We do not have flood maps for Clark 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