Palo Alto County, IA zoning map, flood zone and property lines by address
Free, no account. Or open the Iowa map and tap a lot.
Towns in Palo Alto County: Emmetsburg.
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 Palo Alto County has 47 FIRM panels, the newest effective October 2021; 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 Palo Alto 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 Iowa county parcel layers (each county publishes its own), so a Palo Alto lot shows the same lines the county assessor draws. Palo Alto County covers about 360,873 acres of land and 3,565 acres of water.
Mapped lines are approximate. The Palo Alto County assessor keeps the parcel record (Palo Alto County website); a licensed surveyor sets the true corners.
Zoning
Palo Alto County zones its unincorporated land, and Emmetsburg zones the land inside its limits. ParcelSheet shows the use the county assessor lists for the lot and links the county zoning office for the district, the uses it allows and the lot size it needs.
ADU and guest houses
Under Iowa's county zoning law (Iowa Code Chapter 335), local governments can allow an accessory dwelling unit on a lot with a house. Whether a Palo Alto lot can add one depends on its district; the county 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. Palo Alto County is soil survey area IA147, Palo Alto County, Iowa, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Palo Alto County needs a permit from the Palo Alto County environmental health department (county board of health, under Iowa Department of Natural Resources rules).
Setbacks
Setbacks in Palo Alto County come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the county zoning office gives them for the lot's district, and Emmetsburg for land inside its limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Palo Alto lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Palo Alto 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 Palo Alto County has 47 panels, the newest effective October 2021. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Palo Alto County?
Open the Iowa map, type the address, and the parcel outline from the Palo Alto 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 Palo Alto County?
Zoning in Palo Alto County is set by the county for unincorporated land and by each city (such as Emmetsburg) inside its own limits. ParcelSheet shows the use code the county assessor lists and links the office that sets the zoning; the planning office has the final word.
Can I build an ADU in Palo Alto County?
Under Iowa's county zoning law (Iowa Code Chapter 335), counties and cities can allow an accessory dwelling unit, and each sets its own rules. In Palo Alto County ask the 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 Palo Alto County?
Yes. A new or changed septic system in Palo Alto County needs a permit from the Palo Alto County environmental health department (county board of health, under Iowa Department of Natural Resources rules). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area IA147 (Palo Alto County, Iowa).
What can I build on 5 acres in Palo Alto County?
Zoning in Palo Alto County is set by the county for unincorporated land and each city inside its own limits (such as Emmetsburg). 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 planning office has the district and its rules. See the Palo Alto County website.
What are the residential setbacks in Palo Alto County (2026)?
Setbacks in Palo Alto County come from the zoning code of the county, or of the city when the lot is inside city limits: 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 zoning office gives them for the district. See the Palo Alto County website.
Next to Palo Alto County: Buena Vista County, Clay County, Emmet County, Kossuth County, Pocahontas County.
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