County · code 21155
Marion CountyKentucky
Marion County is a county in Kentucky with its seat in Lebanon. It was formed in 1834 from Washington County and named after Francis Marion.
- Founded1834
- County seatLebanon
- Named forFrancis Marion
- Land area343 sq mi + 3.8 sq mi water
- Population19,581 2020 Census
Where it is
Marion on the map of Kentucky
Kentucky has 120 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1834 from Washington County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Marion County was created from Washington County on March 1, 1834. Small areas were added from Washington County in 1845 and 1869 to accommodate local property owners.
- 1834Marion County created Marion created from Washington. · Ky. Acts 1833-1834, 42d assy., ch. 285, sec. 1/pp. 367-369
- 1837Boundary clarified Boundary between Marion and Washington was clarified (no change).with Washingtonno change· Ky. Acts 1836-1837, ch. 390/p. 261
- 1845Gained territory Marion gained small area from Washington to accommodate local property owner. · Ky. Acts 1844-1845, ch. 172/p. 32
- 1869Gained territory Marion gained small area from Washington to accommodate local property owners. · Ky. Acts 1869, Jan. adj. sess., ch. 2103, sec. 1/p. 354
Land and parcels
What the maps cover in Marion
Who publishes each layer, how good it is, and when we last checked.
-
Parcels Missing
No public parcel map found for Marion County yet. Lot lines and owners of record are kept by the county (marioncounty.ky.gov).
-
Address points Official
One point per address, 10,804 in all from Kentucky Division of Geographic Information (DGI) with the Kentucky 911 Services Board.
edited 6 October 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
Marion 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
Marion 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 Marion County.
See your own lot on these maps
Open Marion 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 Marion County
- When was Marion County founded?
- Marion County was founded in 1834, formed from Washington County, and named after Francis Marion.
- What is the county seat of Marion County?
- The county seat of Marion County is Lebanon.
- Is there an online parcel map for Marion County?
- Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
- Has Marion County's boundary or name changed?
- Marion County was created in 1834 from Washington County. Since then the Atlas of Historical County Boundaries records 2 later changes, most of them small boundary adjustments, chiefly involving Washington County.
- Is my lot in a flood zone?
- We do not have flood maps for Marion County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby