Cook County, MN zoning map, flood zone and property lines by address
Free, no account. Or open the Minnesota map and tap a lot.
Towns in Cook County: Grand Marais.
Property lines
The parcel outline, parcel number and mapped size come from the Minnesota open parcel layer (Minnesota Geospatial Information Office, from the counties that share their parcels), so a Cook lot shows the same lines the county assessor draws. Cook County covers about 929,668 acres of land and 1,207,808 acres of water.
Mapped lines are approximate. The Cook County assessor keeps the parcel record (Cook County website); a licensed surveyor sets the true corners.
Zoning
In Minnesota zoning is set by the county, the township or the city, depending on where the lot is: in Cook County, Grand Marais zones the land inside its limits. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the county, township or city zoning office has the district, the uses it allows and the lot size it needs. The Cook County website lists the county's municipalities.
ADU and guest houses
Under Minnesota's zoning laws (Minnesota Statutes chapters 394 and 462), the county, the township or the city, depending on where the lot is can allow an accessory dwelling unit on a lot with a house. Whether a Cook lot can add one depends on its district; the county, township 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. Cook County is soil survey area MN031, Cook County, Minnesota, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Cook County needs a permit from the Cook County septic (SSTS) program under the Minnesota Pollution Control Agency rules.
Setbacks
Setbacks in Cook County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county, township or city zoning office gives them for the lot's district, and Grand Marais for land inside its limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Cook lot and the Forest Service wildfire hazard rating at it.
Questions
How do I find property lines in Cook County?
Open the Minnesota map, type the address, and the parcel outline from the Cook County assessor 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 Cook County?
Zoning in Cook County is set by the county, the township or the city, depending on where the lot is (such as Grand Marais). ParcelSheet shows the use code on the parcel record and names the municipality; the county, township or city zoning office has the final word.
Can I build an ADU in Cook County?
Under Minnesota's zoning laws (Minnesota Statutes chapters 394 and 462), the county, the township or the city, depending on where the lot is can allow an accessory dwelling unit, and each sets its own rules. In Cook County ask the county, township 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 Cook County?
Yes. A new or changed septic system in Cook County needs a permit from the Cook County septic (SSTS) program under the Minnesota Pollution Control Agency rules. ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area MN031 (Cook County, Minnesota).
What can I build on 5 acres in Cook County?
Zoning in Cook County is set by the county, the township or the city, depending on where the lot is (such as Grand Marais). 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, township or city zoning office has the district and its rules. See the Cook County website.
What are the residential setbacks in Cook County (2026)?
Setbacks in Cook 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, township or city zoning office gives them for the district. See the Cook County website.
Next to Cook County: Lake County.
The Minnesota map · All Minnesota counties · Flood zones explained · FIRM panels and LOMAs · All 50 states