County · code 19143
Osceola CountyIowa
Osceola County is a county in Iowa with its seat in Sibley, created in 1851.
- Founded1851
- County seatSibley
- Named forOsceola
- Land area399 sq mi + 0.7 sq mi water
- Population6,192 2020 Census
- Parcels mapped12,056 checked 16 October 2026
Where it is
Osceola 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 Polk County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Osceola County was created from Polk County on January 15, 1851, and named after Osceola. Initially not fully organized, it was attached to Woodbury County in 1853 for revenue, election, and judicial purposes. The county became fully organized and detached from Woodbury County on January 1, 1872.
- 1851Osceola County created Osceola created from Non-County Area 9 attached to Polk; Osceola not fully organized, not attached. · Iowa Acts 1850-1851, ch. 9, sec. 49/p. 38
- 1853Changed Osceola attached to Woodbury "for revenue, election, and judicial purposes". · Iowa Acts 1852-1853, ch. 8, sec. 14/p. 24
- 1872Changed Osceola fully organized, detached from Woodbury. · Swisher, "Organization of Counties," 576
Land and parcels
What the maps cover in Osceola
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 12,056 parcels from Osceola County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Missing
No public address points layer found for Osceola County yet.
-
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
Osceola 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 Osceola County.
See your own lot on these maps
Open Osceola 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 Osceola County
- When was Osceola County founded?
- Osceola County was founded in 1851, formed from Polk County, and named after Osceola.
- What is the county seat of Osceola County?
- The county seat of Osceola County is Sibley.
- Is there an online parcel map for Osceola County?
- Yes. Osceola County publishes a parcel map of 12,056 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Osceola County's boundary or name changed?
- Osceola County was created in 1851 from Polk County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Woodbury County.
- Is my lot in a flood zone?
- We do not have flood maps for Osceola County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby