County · code 39015
Brown CountyOhio
Brown County is a county in Ohio, with its seat in Georgetown, formed in 1818.
- Founded1818
- County seatGeorgetown
- Named forJacob Brown
- Land area490 sq mi + 3.4 sq mi water
- Population43,676 2020 Census
- Parcels mapped35,662 checked 16 October 2026
Where it is
Brown on the map of Ohio
Ohio has 88 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1818 from Adams County and Clermont County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Brown County was created on March 1, 1818, from Adams and Clermont counties. The county was named after Jacob Brown. On October 27, 1874, Brown County lost territory to Highland County.
- 1818Brown County created Brown created from Adams and Clermont. · Ohio Laws 1817, 16th assy., ch. 12, secs. 1, 6/pp. 29, 31; Chase, 3:ch. 412/pp. 2124-2125
- 1819Boundary clarified Boundary between Brown and Adams was clarified (no change).with Adamsno change· Ohio Laws 1818, 17th assy., ch. 57/p. 130; Chase 3: ch. 425/p. 2132
- 1874
Land and parcels
What the maps cover in Brown
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 35,662 parcels from Brown County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 25 November 2025 · checked 16 October 2026 -
Address points Official
One point per address, 22,119 in all from Ohio Geographically Referenced Information Program (OGRIP), Ohio DAS/OIT (state GIS office).
edited 24 June 2025 · 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
Brown 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
Brown 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 Brown County.
See your own lot on these maps
Open Brown 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 Brown County
- When was Brown County founded?
- Brown County was founded in 1818, formed from Adams County and Clermont County, and named after Jacob Brown.
- What is the county seat of Brown County?
- The county seat of Brown County is Georgetown.
- Is there an online parcel map for Brown County?
- Yes. Brown County publishes a parcel map of 35,662 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Brown County's boundary or name changed?
- Brown County was created in 1818 from Adams County and Clermont County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Highland County.
- Is my lot in a flood zone?
- We do not have flood maps for Brown County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby