When was Venango County founded?

Venango County was founded in 1800, formed from Allegheny County, Lycoming County and Crawford County, and named after Indigenous peoples of the United States in North America.

What is the county seat of Venango County?

The county seat of Venango County is Franklin.

Is there an online parcel map for Venango County?

Yes. Venango County publishes a parcel map of 36,272 parcels, rated fallback here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Venango County's boundary or name changed?

Venango County was created in 1800 from Allegheny County, Lycoming County and Crawford County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Crawford County, Warren County and Clarion County.

Is my lot in a flood zone?

We do not have flood maps for Venango County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 42121

Venango CountyPennsylvania

Venango County is a county in Pennsylvania with its county seat in Franklin. The county was formed on March 12, 1800, from parts of Allegheny and Lycoming Counties.

Founded1800
County seatFranklin
Named forIndigenous peoples of the United States in North America
Land area674 sq mi + 8.6 sq mi water
Population50,454 2020 Census
Parcels mapped36,272 checked 16 October 2026

Open the free map Click any parcel in Venango County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1800 from Allegheny County, Lycoming County and Crawford County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Venango County was named after Indigenous peoples of North America. Created in 1800 from Allegheny and Lycoming, it was initially unorganized and attached to Crawford County until it was fully organized in 1805. Over time, the county lost territory: Clarion County was created from Venango in 1840, and Forest County was formed from Venango in 1866.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

1800
Venango County created Venango created from Allegheny and Lycoming; not fully organized, attached to Crawford.
from Allegheny from Lycoming from Crawford
12 March 1800 · Pa. Stat., ch. 2130, pp. 458, 460-461
1805
Changed Warren attached to Venango (and indirectly attached to Crawford through Venango).
Warren Crawford
1 April 1805 · Pa. Stat., ch. 2600, sec. 6/17:1033
1805
Changed Venango fully organized, detached from Crawford.
Crawford
1 September 1805 · Pa. Stat., ch. 2600, sec. 1/17:1032
1819
Changed Warren detached from Venango.
Warren
1 October 1819 · Pa. Laws 1818-1819, ch. 72, secs. 1-2/p. 102
1822
Exchanged territory Venango exchanged with Crawford.
with Crawford
28 February 1822 · Pa. Laws 1821-1822, ch. 35, sec. 1/pp. 40-41
1840
Lost territory Venango lost to the creation of Clarion.
to Clarion
1 September 1840 · Pa. Laws 1838-1839, no. 27, secs. 1-2/pp. 51-52; Pa. Laws 1840, no. 165, secs. 1-3, 5/pp. 426-428
1866
Lost territory Venango lost to Forest.
to Forest
31 October 1866 · Pa. Laws 1866, no. 1417, sec. 1/pp. 1527-1528, and no. 1418, sec. 3/p. 1530

Land and parcels

What the maps cover in Venango

Who publishes each layer, how good it is, and when we last checked.

Parcels Fallback

Lot lines and tax-map numbers for 36,272 parcels from Venango County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey. This copy is a fallback, not the county's own: use it as a guide and check the official record.
edited 23 June 2022 · checked 16 October 2026
Address points Missing

No public address points layer found for Venango County yet.
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

Venango by the Census

Population

50,454 2020 Census count

Housing units

26,156 2020 Census count

Land area

674 square miles

Water area

8.6 square miles

People per sq mi

75 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Venango 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 Venango County.
co.venango.pa.us

See your own lot on these maps

Open Venango 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Venango County

When was Venango County founded?: Venango County was founded in 1800, formed from Allegheny County, Lycoming County and Crawford County, and named after Indigenous peoples of the United States in North America.
What is the county seat of Venango County?: The county seat of Venango County is Franklin.
Is there an online parcel map for Venango County?: Yes. Venango County publishes a parcel map of 36,272 parcels, rated fallback here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Venango County's boundary or name changed?: Venango County was created in 1800 from Allegheny County, Lycoming County and Crawford County. Since then the Atlas of Historical County Boundaries records 6 later changes, chiefly involving Crawford County, Warren County and Clarion County.
Is my lot in a flood zone?: We do not have flood maps for Venango County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby