Dunn County, WI zoning map, flood zone and property lines by address
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Towns in Dunn County: Menomonie, Tainter Lake, Colfax.
Flood zone by address
ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA's countywide study for Dunn County has 188 FIRM panels, the newest effective December 2011; no coastal V zones are mapped in it.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Dunn house comes from a licensed surveyor and is often on file with the county or city building office.
Property lines
The parcel outline, parcel number and mapped size come from the Wisconsin statewide parcel layer (from each county, compiled by the State Cartographer), so a Dunn lot shows the same lines the real property lister draws. Dunn County covers about 544,102 acres of land and 8,790 acres of water.
Mapped lines are approximate. The Dunn County real property lister keeps the parcel record (Dunn County website); a licensed surveyor sets the true corners.
Zoning
In Wisconsin zoning is set by the county, the town or the city or village, depending on where the lot is: in Dunn County, Menomonie, Colfax each zone the land inside their limits. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the county, town or city zoning office has the district, the uses it allows and the lot size it needs. The Dunn County website lists the county's municipalities.
ADU and guest houses
Under Wisconsin's zoning laws (Wis. Stat. 59.69 for counties, 60.61 for towns and 62.23 for cities), the county, the town or the city or village, depending on where the lot is can allow an accessory dwelling unit on a lot with a house. Whether a Dunn lot can add one depends on its district; the county, town or city zoning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Dunn County is soil survey area WI033, Dunn County, Wisconsin, last updated August 2026, on Web Soil Survey.
A new or changed septic system in Dunn County needs a permit from the Dunn County sanitary permit office under the state POWTS rules (Department of Safety and Professional Services).
Setbacks
Setbacks in Dunn County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county, town or city zoning office gives them for the lot's district, and Menomonie and Colfax for land inside their limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Dunn lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Dunn County?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA's countywide flood map for Dunn County has 188 panels, the newest effective December 2011. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Dunn County?
Open the Wisconsin map, type the address, and the parcel outline from the Dunn County real property lister shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Dunn County?
Zoning in Dunn County is set by the county, the town or the city or village, depending on where the lot is (such as Menomonie, Colfax). ParcelSheet shows the use code on the parcel record and names the municipality; the county, town or city zoning office has the final word.
Can I build an ADU in Dunn County?
Under Wisconsin's zoning laws (Wis. Stat. 59.69 for counties, 60.61 for towns and 62.23 for cities), the county, the town or the city or village, depending on where the lot is can allow an accessory dwelling unit, and each sets its own rules. In Dunn County ask the county, town or city zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Dunn County?
Yes. A new or changed septic system in Dunn County needs a permit from the Dunn County sanitary permit office under the state POWTS rules (Department of Safety and Professional Services). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area WI033 (Dunn County, Wisconsin).
What can I build on 5 acres in Dunn County?
Zoning in Dunn County is set by the county, the town or the city or village, depending on where the lot is (such as Menomonie, Colfax). The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the county, town or city zoning office has the district and its rules. See the Dunn County website.
What are the residential setbacks in Dunn County (2026)?
Setbacks in Dunn County come from the zoning code of the municipality the lot sits in: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the county, town or city zoning office gives them for the district. See the Dunn County website.
Next to Dunn County: Barron County, Chippewa County, Pepin County, Pierce County, Polk County, St. Croix County.
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