County · code 42031
Clarion CountyPennsylvania
Clarion County is a county in Pennsylvania established in 1840 with its seat in the borough of Clarion. The county was named after the Clarion River.
- Founded1840
- County seatClarion
- Named forClarion River
- Land area601 sq mi + 9 sq mi water
- Population37,241 2020 Census
Where it is
Clarion on the map of Pennsylvania
Pennsylvania has 67 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1840 from Armstrong County and Venango County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Clarion County was created on September 1, 1840, from portions of Armstrong and Venango counties.
- 1840Clarion County created Clarion created from Armstrong and Venango. · Pa. Laws 1838-1839, no. 27, secs. 1-2/pp. 51-52; Pa. Laws 1840, no. 165, secs. 1-3, 5/pp. 426-428
Land and parcels
What the maps cover in Clarion
Who publishes each layer, how good it is, and when we last checked.
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Parcels Missing
No public parcel map found for Clarion County yet. Lot lines and owners of record are kept by the county (co.clarion.pa.us).
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Address points Missing
No public address points layer found for Clarion 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
Clarion 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.
Permits
Zoning and code
County government
- County government
The official website of Clarion County.
See your own lot on these maps
Open Clarion 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 Clarion County
- When was Clarion County founded?
- Clarion County was founded in 1840, formed from Armstrong County and Venango County, and named after Clarion River.
- What is the county seat of Clarion County?
- The county seat of Clarion County is Clarion.
- Is there an online parcel map for Clarion 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 Clarion County's boundary or name changed?
- Clarion County was created in 1840 from Armstrong County and Venango County. The Atlas of Historical County Boundaries records no boundary change since.
- Is my lot in a flood zone?
- We do not have flood maps for Clarion County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby