County · code 19129
Mills CountyIowa
Mills County is located in Iowa and was formed from Pottawattamie County in 1851. The county seat is Glenwood.
- Founded1851
- County seatGlenwood
- Land area437 sq mi + 3.2 sq mi water
- Population14,484 2020 Census
- Parcels mapped17,674 checked 15 October 2026
Where it is
Mills on the map of Iowa
Iowa has 99 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1851 from Pottawattamie County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Mills County was created from Pottawattamie County on January 15, 1851, but was not initially fully organized. The county became fully organized on August 18, 1851.
- 1851Mills County created Mills created from Pottawattamie; Mills not fully organized, not attached. · Iowa Acts 1850-1851, ch. 9, sec. 6/p. 28
- 1851Changed Mills fully organized. · Swisher, "Organization of Counties," 575
Land and parcels
What the maps cover in Mills
Who publishes each layer, how good it is, and when we last checked.
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Parcels Fallback
Lot lines and tax-map numbers for 17,674 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey. This copy is a fallback, not the county's own: use it as a guide and check the official record.
edited 9 March 2022 · checked 15 October 2026 -
Address points Missing
No public address points layer found for Mills 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
Mills 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.
Zoning and code
County government
- County government
The official website of Mills County.
See your own lot on these maps
Open Mills 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 Mills County
- When was Mills County founded?
- Mills County was founded in 1851, formed from Pottawattamie County.
- What is the county seat of Mills County?
- The county seat of Mills County is Glenwood.
- Is there an online parcel map for Mills County?
- Yes. A public source publishes a parcel map of 17,674 parcels, rated fallback here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Mills County's boundary or name changed?
- Mills County was created in 1851 from Pottawattamie County. Since then the Atlas of Historical County Boundaries records 1 later change.
- Is my lot in a flood zone?
- We do not have flood maps for Mills County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby