County outline
Where Venango County is located
Area breakdown
Land accounts for 98.7% of Venango County’s measured area and water for 1.3%. Its combined area converts to 1,768.5 square kilometers or approximately 437,003 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 674.265 | 1,746.338 | 431,529.6 |
| Water | 8.552 | 22.15 | 5,473.3 |
| Total | 682.817 | 1,768.488 | 437,002.9 |
How Venango County compares
By original Census land area, Venango County ranks #32 of 67 in Pennsylvania and #1399 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.032 times the Pennsylvania county-equivalent median of 653.3 square miles. It accounts for 1.5% of the combined county land area in the state.
See the complete Pennsylvania ranking · What counts as a county equivalent?
Population and density of Venango County
The Census Bureau estimates that 49,346 people lived in Venango County on July 1, 2025. That ranks #1,034 of 3,222 county equivalents nationally and #44 of 67 in Pennsylvania. Since the April 1, 2020 estimates base of 50,465, the population has declined by 1,119 (−2.2%), compared with +0.4% for Pennsylvania as a whole.
With 674.3 square miles of land, that is 73 people per square mile (28 per km²), placing Venango County #1,226 nationally for density and #45 in Pennsylvania. The median county equivalent has 47 people per square mile; the Pennsylvania median is 137. Put another way, there are about 8.7 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 50,370 | 50,057 | 49,707 | 49,490 | 49,518 | 49,346 |
| Change | — | −313 | −350 | −217 | +28 | −172 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Venango County
Venango County is divided into 31 municipalities and townships. In Pennsylvania, county subdivisions are local governments, and together they cover all of the county’s land and residents.
The most populous is Oil City city, with 9,301 residents (18.8% of the county). The largest by land is Cranberry township, at 69.8 mi², or 10.4% of the county’s land. The county seat, Franklin city, has 5,899 residents. Among those with at least 1,000 residents in 2020, Pinegrove township grew fastest since then (+1.5%).
| County subdivision | Population 2025 | Since 2020 | Land mi² | Share of county land |
|---|---|---|---|---|
| Oil City city | 9,301 | −3.2% | 4.493 | 0.7% |
| Cranberry township | 6,241 | −1.6% | 69.8 | 10.4% |
| Franklin cityCounty seat | 5,899 | −3% | 4.677 | 0.7% |
| Sugarcreek borough | 4,680 | −1.9% | 37.5 | 5.6% |
| Cornplanter township | 2,258 | −2.5% | 37.4 | 5.6% |
| Sandycreek township | 2,028 | −1.7% | 17.8 | 2.6% |
| Frenchcreek township | 1,393 | −2.2% | 29.1 | 4.3% |
| Pinegrove township | 1,348 | +1.5% | 37 | 5.5% |
| Oakland township | 1,335 | −2% | 28.8 | 4.3% |
| Cherrytree township | 1,276 | −2.4% | 36.7 | 5.4% |
| Irwin township | 1,228 | −2.2% | 30.3 | 4.5% |
| Rockland township | 1,215 | −2.4% | 49.6 | 7.4% |
| Jackson township | 945 | +3.3% | 24.7 | 3.7% |
| Clinton township | 937 | −1.7% | 28.4 | 4.2% |
| Canal township | 907 | −2.8% | 24.3 | 3.6% |
Show the other 16 subdivisions
| Name | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Plum township | 890 | −2.6% | 26.6 |
| Pleasantville borough | 819 | −2.7% | 0.95 |
| Richland township | 761 | −1.8% | 22.2 |
| Scrubgrass township | 738 | −2% | 25.7 |
| Oil Creek township | 736 | −2.5% | 23 |
| Polk borough | 621 | −2.2% | 2.028 |
| Emlenton borough | 595 | −2.8% | 0.672 |
| Mineral township | 483 | −2.8% | 22.3 |
| Rouseville borough | 443 | −3.3% | 0.893 |
| President township | 439 | −2.4% | 37.8 |
| Clintonville borough | 430 | −2.3% | 1.091 |
| Cooperstown borough | 383 | −3.3% | 0.554 |
| Victory township | 372 | −1.1% | 20.1 |
| Allegheny township | 283 | −1% | 25 |
| Barkeyville borough | 183 | −2.7% | 3.322 |
| Utica borough | 179 | −2.7% | 1.399 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Venango County. Land: 2026 Census Gazetteer. How communities are listed.
Metropolitan area
Venango County is a central county of the Oil City, PA Micropolitan Statistical Area. Venango County is the area’s only county equivalent, so the micro area has the same 674.3 square miles of land. By combined land it ranks #320 of 542 micropolitan areas, and #229 by population.
ZIP codes
23 ZIP Code Tabulation Areas have land in Venango County; 15 of them have most of their land inside the county, and the others mainly cover neighboring areas.
1603816127161531623216301163111631416317163191632316327163411634216343163441634616353163541636216364163721637316374
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Venango County
Venango County shares a land border with 6 county equivalents. It has more land than 3 of them. The largest neighbor is Crawford County (1,012.4 mi²) and the smallest is Forest County (427.3 mi²). Together with its neighbors, Venango County forms a block of 5,061 mi² of land, of which it holds 13.3%.
| Bordering county equivalent | Land mi² | Size vs. Venango | Compare |
|---|---|---|---|
| Crawford County | 1,012.4 | 1.5× larger | Compare |
| Warren County | 884.3 | 1.3× larger | Compare |
| Butler County | 789.5 | 1.2× larger | Compare |
| Mercer County | 672.5 | about the same | Compare |
| Clarion County | 600.8 | 1.1× smaller | Compare |
| Forest County | 427.3 | 1.6× smaller | Compare |
How big is Venango County compared with U.S. states?
Venango County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.5 times as much. Pennsylvania’s county land could hold about 66 areas the size of Venango County.
Another way to picture it: the same land area would fill a square about 26 miles (41.8 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Venango County?
Venango County has more land than 1,823 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Venango County at #1,484 nationally by total area, 85 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 1.3%, compared with a national county-equivalent median of 1.2%. The two percentages are within 0.1 percentage points of each other. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Venango County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1398 | Pope County, Minnesota | 674.6 | Compare |
| #1399 | Venango County, Pennsylvania | 674.3 | This county |
| #1400 | Bennington County, Vermont | 674.2 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 41.400733, -79.765678. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,746,337,753 m²; AWATER: 22,149,584 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Venango County?
Venango County, Pennsylvania has 674.3 square miles (1,746.3 km²) of land and 8.552 square miles of water, for a total area of 682.8 square miles. It ranks #1399 of 3,222 U.S. county equivalents by land area.
Is Venango County the largest county in Pennsylvania?
No. Venango County ranks #32 of 67 in Pennsylvania by land area. The largest is Lycoming County, with 1,228.9 square miles of land.
What counties border Venango County?
Venango County shares a land border with Crawford County, Mercer County, Clarion County, Forest County, Butler County, and Warren County.
What is the population of Venango County?
The Census Bureau estimates Venango County had 49,346 residents on July 1, 2025, ranking #1,034 of 3,222 county equivalents. That is 73 people per square mile of land.
What is the county seat of Venango County?
The county seat of Venango County is Franklin.
What cities and towns are in Venango County?
Venango County has 31 county subdivisions (cities, towns and townships). The most populous five are Oil City city, Cranberry township, Franklin city, Sugarcreek borough, and Cornplanter township.
Is Venango County part of a metropolitan area?
Yes. It is a central county of the Oil City, PA Micropolitan Statistical Area.
How many ZIP codes are in Venango County?
23 ZIP Code Tabulation Areas have land in Venango County, and 15 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Venango County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.5 times as much land.
How many acres of land are in Venango County?
The land measurement converts to approximately 431,530 acres. Including water, total area is approximately 437,003 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.