County · code 18161
Union CountyIndiana
Union County is in Indiana and was formed on February 1, 1821, from portions of Fayette, Franklin, and Wayne Counties. The county seat is Liberty.
- Founded1821
- County seatLiberty
- Named forunion
- Land area161 sq mi + 4 sq mi water
- Population7,087 2020 Census
- Parcels mapped6,600 checked 15 October 2026
Where it is
Union on the map of Indiana
Indiana has 92 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1821 from Fayette County, Franklin County and Wayne County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Union County was created from Fayette, Franklin, and Wayne Counties and named after the concept of union. In 1826, the county gained additional territory from Franklin County.
- 1821Union County created Union created from Fayette, Franklin, and Wayne. · Ind. Acts 1820, 5th sess., ch. 58, secs. 1, 8/pp. 126, 129
- 1826Gained territory Union gained from Franklin. · Ind. Acts 1825, 10th sess., ch. 7/p. 11
Land and parcels
What the maps cover in Union
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 6,600 parcels from Indiana Geographic Information Office (IndianaMap). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 6 October 2026 · checked 15 October 2026 -
Address points Official
One point per address, 5,236 in all from Indiana Geographic Information Office (IGIO).
edited 8 March 2026 · checked 13 October 2026 -
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
Union 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
Union County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Union County.
See your own lot on these maps
Open Union 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 Union County
- When was Union County founded?
- Union County was founded in 1821, formed from Fayette County, Franklin County and Wayne County, and named after union.
- What is the county seat of Union County?
- The county seat of Union County is Liberty.
- Is there an online parcel map for Union County?
- Yes. Indiana Geographic Information Office (IndianaMap) publishes a parcel map of 6,600 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Union County's boundary or name changed?
- Union County was created in 1821 from Fayette County, Franklin County and Wayne County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Franklin County.
- Is my lot in a flood zone?
- We do not have flood maps for Union County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby