County · code 42053
Forest CountyPennsylvania
Forest County is a county in Pennsylvania with its seat in Tionesta, formed in 1848.
- Founded1848
- County seatTionesta
- Named forforest
- Land area427 sq mi + 3.2 sq mi water
- Population6,973 2020 Census
- Parcels mapped11,461 checked 14 October 2026
Where it is
Forest 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 1848 from Jefferson County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Forest County was created from Jefferson County on April 11, 1848, but was not fully organized and remained attached to Jefferson. The county was briefly lost back to Jefferson in 1850, then fully organized and detached from Jefferson in 1857. It gained territory from Venango County in 1866 and lost territory to Elk County in 1870.
- 1848Forest County created Forest created from Jefferson; not fully organized, attached to Jefferson. · Pa. Laws 1851, res. 9/pp. 744-745
- 1850
- 1857Changed Forest fully organized, detached from Jefferson. · Pa. Laws 1857, no. 653, secs. 1-2/pp. 612-613
- 1866Gained territory Forest gained from Venango. · Pa. Laws 1866, no. 1417, sec. 1/pp. 1527-1528, and no. 1418, sec. 3/p. 1530
- 1870
- 1872Boundary clarified Boundary between Forest and Elk clarified (no change).with Elkno change· Pa. Laws 1872, no. 821, sec. 1/p. 861
Land and parcels
What the maps cover in Forest
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 11,461 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 1 April 2024 · checked 14 October 2026 -
Address points Missing
No public address points layer found for Forest 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
Forest 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
Forest 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 Forest County.
See your own lot on these maps
Open Forest 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 Forest County
- When was Forest County founded?
- Forest County was founded in 1848, formed from Jefferson County, and named after forest.
- What is the county seat of Forest County?
- The county seat of Forest County is Tionesta.
- Is there an online parcel map for Forest County?
- Yes. A public source publishes a parcel map of 11,461 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Forest County's boundary or name changed?
- Forest County was created in 1848 from Jefferson County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Jefferson County, Elk. County and Venango County.
- Is my lot in a flood zone?
- We do not have flood maps for Forest County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby