County · code 55093
Pierce CountyWisconsin
Pierce County is in Wisconsin and is the county seat of Ellsworth. The county was formed on March 14, 1853, from St. Croix County and named after Franklin Pierce.
- Founded1853
- County seatEllsworth
- Named forFranklin Pierce
- Land area574 sq mi + 19 sq mi water
- Population42,212 2020 Census
- Parcels mapped28,455 checked 15 October 2026
Where it is
Pierce on the map of Wisconsin
Wisconsin has 72 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1853 from St. Croix County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Pierce County was created from St. Croix County in 1853, though it was initially attached to St. Croix for judicial purposes. The county was fully organized and detached from St. Croix on November 25, 1853.
- 1853Pierce County created Pierce created from St. Croix; Pierce not fully organized, attached to St. Croix "for judicial purposes." · Wis. Laws 1853, gen., ch. 31, secs. 1-2, 6/pp. 28-30
- 1853Changed Pierce fully organized, detached from St. Croix. · Wis. Laws 1853, gen., ch. 31, secs. 1-2, 4-6/pp. 28-29
- 1943Gained territory Pierce gained small area from St. Croix in section 36, township 28 north, range 19 west; and section 31, township 28 north, range 18 west. · Wis. Laws 1943, ch. 13, secs. 1, 5, 7/pp. 15, 18
Land and parcels
What the maps cover in Pierce
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 28,455 parcels from Pierce County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026 -
Address points Missing
No public address points layer found for Pierce County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- 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
Pierce by the Census
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.
County government
- County government
The official website of Pierce County.
See your own lot on these maps
Open Pierce 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.
Questions
Common questions about Pierce County
- When was Pierce County founded?
- Pierce County was founded in 1853, formed from St. Croix County, and named after Franklin Pierce.
- What is the county seat of Pierce County?
- The county seat of Pierce County is Ellsworth.
- Is there an online parcel map for Pierce County?
- Yes. Pierce County publishes a parcel map of 28,455 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Pierce County's boundary or name changed?
- Pierce County was created in 1853 from St. Croix County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving St. Croix County.
- Is my lot in a flood zone?
- We do not have flood maps for Pierce County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby