Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Venango County, Pennsylvania
EPA puts Venango County in Zone 1, its highest radon zone, and 34.1% of its 179 reported radon tests (2020) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
34.1%
3.8 pts above PA
- Venango
- 34.1%
- PA
- 30.3%
179 tests, 2020
Median result
3.0pCi/L
Below action level
- Venango
- 3.0 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2020
Tests reported
179
47th of 63 by tests
- Venango
- 179
- Montgomery
- 10,508
Reported to CDC before any fix, 2020
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in PA
42 of 63
Middle half
- Venango
- 34.1%
- Perry
- 57.7%
By share, of 63 with 30+ tests
Read a result for Venango County
Starts at Venango County's median, 3.0 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.0 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Venango County's median reported result, 2020.
The data
Venango County, At a glance
Venango County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Venango County in
USGS geologic potential: High across 92% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Venango County, 2020
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 40.8% |
| 2015 | 47.1% |
| 2016 | 36.9% |
| 2017 | 41.6% |
| 2018 | 39.3% |
| 2019 | 48.1% |
| 2020 | 34.1% |
2020: 34.1%. Across these years the share ran from 34.1% to 48.1%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 179 tests reported to CDC for Venango County over 2020, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2020. Measured data period: 2005 to 2020 (every CDC figure on file).
Venango County, Compared
Venango County radon figures, compared
Calculated by Radon411In Venango County, about 3 in 10 reported tests in 2020 (61 of 179) were at or above EPA's action level. Against the national pool of 25.5%, the gap is 8.6 points higher. Across 67 Pennsylvania counties pooled together, 30.3% of tests reached that level, so Venango County runs 3.8 points above its state.
Of 5 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 3 a smaller one; the spread is 29.9% (Crawford County) to 42.3% (Butler County). By share, Venango County is 42nd of 63 Pennsylvania counties with 30 or more tests for the same period.
Year by year, 2014 opened at 40.8% and 2020 closed at 34.1% (down 6.7 points), with 2019 the high at 48.1%. Half the tests came in under 3.0 pCi/L and half over it; the single highest reached 152.4 pCi/L. Below the action level, 48 tests (26.8%) came in under 2 pCi/L, against 44.3% statewide, and 70 tests (39.1%) fell between 2 and 4, against 25.4% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 34.1% share point the same way here. USGS geology rates 92% of the county's land high radon potential.
The busiest year on file was 2015, with 257 tests reported; the quietest, 2017, had 113.
Venango CountyPennsylvania, pooled
| Year | Tests | Venango County, at or above 4 pCi/L | Pennsylvania, pooled |
|---|---|---|---|
| 2014 | 184 | 40.8% | 36.1% |
| 2015 | 257 | 47.1% | 37.8% |
| 2016 | 217 | 36.9% | 34.4% |
| 2017 | 113 | 41.6% | 35.1% |
| 2018 | 150 | 39.3% | 30.5% |
| 2019 | 189 | 48.1% | 31.4% |
| 2020 | 179 | 34.1% | 30.3% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Venango County, State data
Pennsylvania's own radon test data
MeasuredWhat Pennsylvania's own agencies publish about radon tests in Venango County, with their period. These are not CDC's figures and are never added to them.
MeasuredState figures, not CDC's
What Pennsylvania DEP reports for the ZIP codes in Venango County
Pennsylvania DEP publishes its figures by ZIP code, not by county. These are the 23 ZIP codes that lie wholly or partly in Venango County, each with the state's own figures for it. Period: Period not stated by DEP.
| ZIP code | What the state reports |
|---|---|
| 16038 | Basement: average 10.9 pCi/L, 95 tests; First floor: figures not shown |
| 16127 | Basement: average 4.5 pCi/L, 1,205 tests; First floor: average 3.1 pCi/L, 125 tests |
| 16153 | Basement: average 4.2 pCi/L, 88 tests; First floor: figures not shown |
| 16232 | Basement: average 7.6 pCi/L, 136 tests; First floor: figures not shown |
| 16301 | Basement: average 11.7 pCi/L, 1,276 tests; First floor: average 6.3 pCi/L, 204 tests |
| 16311 | Basement: figures not shown; First floor: figures not shown |
| 16314 | Basement: average 8.4 pCi/L, 204 tests; First floor: figures not shown |
| 16317 | Basement: figures not shown; First floor: figures not shown |
| 16319 | Basement: average 9.6 pCi/L, 85 tests; First floor: figures not shown |
| 16323 | Basement: average 6.2 pCi/L, 992 tests; First floor: average 4.1 pCi/L, 167 tests |
| 16327 | Basement: average 4.3 pCi/L, 67 tests; First floor: figures not shown |
| 16341 | Basement: average 8.6 pCi/L, 54 tests; First floor: figures not shown |
| 16342 | Basement: average 13.3 pCi/L, 43 tests; First floor: figures not shown |
| 16343 | Basement: figures not shown; First floor: figures not shown |
| 16344 | Basement: figures not shown; First floor: figures not shown |
| 16346 | Basement: average 8.2 pCi/L, 178 tests; First floor: figures not shown |
| 16353 | Basement: average 15.8 pCi/L, 98 tests; First floor: figures not shown |
| 16354 | Basement: average 9.7 pCi/L, 297 tests; First floor: average 4.6 pCi/L, 53 tests |
| 16362 | Basement: figures not shown; First floor: figures not shown |
| 16364 | Basement: average 13.2 pCi/L, 40 tests; First floor: figures not shown |
| 16372 | Basement: figures not shown |
| 16373 | Basement: average 27.0 pCi/L, 155 tests; First floor: average 11.8 pCi/L, 46 tests |
| 16374 | Basement: average 16.3 pCi/L, 36 tests; First floor: figures not shown |
- DEP's report gives the number of tests, the highest result and the average result for each floor tested; it states no period.
- DEP says the smartest thing to do is to test your home for radon, no matter where you live.
- A ZIP code that crosses the county line is listed whole; its figures cover all of it.
Measured: Pennsylvania DEP data, Period not stated by DEP.
Venango County, Geology
The ground under Venango County
PredictedMost of the ground under Venango County is one class on USGS's geologic map: 92.4% of its land is high radon potential, with 7.6% moderate. The map puts 92.4% of Venango County in the area it calls Pennsylvanian Rocks of the Pittsburgh Low Plateau and 7.6% in Glaciated Pittsburgh Plateau. USGS gives the first a radon index of 14, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Pennsylvanian Rocks of the Pittsburgh Low Plateau | Pennsylvanian marine shale, siltstone, sandstone, limestone, and coal. | High | 14 | 92.4% |
| Glaciated Pittsburgh Plateau | Late-Wisconsin till overlying sandstone, shale, limestone, and coal. | Moderate | 11 | 7.6% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Venango County beside the ground around it
Venango County has more high-potential ground than Pennsylvania as a whole: 92.4% of its land against 70.4%. Of the 6 counties that border it, 2 have more high-potential ground, Butler County the most at 98.0%.
The map rates the ground, not the air in any home.
Local help
Venango County, Local resources
Radon testing and mitigation in Venango County
- Radon DivisionRadon Division, run by Department of Environmental Protection, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Pennsylvania.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Through an EPA-funded program, hospitals give parents of newborn children a packet of information which includes a coupon for a free radon test kit from the DEP.
- Compare kits
- Professionals in Pennsylvania151 professionals are listed in Pennsylvania.
What Pennsylvania's program says
- Phone
- 800-237-2366
- Licensing of radon professionals
The Radon Certification Act requires DEP to establish by regulation, a certification program for persons conducting radon gas and radon progeny testing, laboratory analysis and mitigation of radon contamination in buildings.
What it means
Venango County, Questions
Questions about radon in Venango County
Are radon levels high in Venango County?
In 2020, 34.1% of the radon tests reported to CDC for Venango County, Pennsylvania were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.0 pCi/L. Of 63 Pennsylvania counties with 30 or more tests for the same period, 41 reported a higher share; pooled, the state comes to 30.3%.
Which counties border Venango County?
Venango County borders 6 counties: Clarion County, Mercer County, Forest County, Crawford County, Warren County and Butler County.
Products
Venango County, Products
Testing a home in Venango County
In Venango County, 34.1% of 179 tests reported to CDC in 2020 reached 4 pCi/L, against 30.3% pooled across Pennsylvania. In Zone 1 the year-round level in Venango County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
Monitor
View Radon Wi-Fi radon monitor with an e-paper display
- C-NRPP 2024/25: Approved
- Battery
- Wi-Fi, Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Venango County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Venango County
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Venango County, Bordering counties
Counties bordering Venango County
Calculated by Radon411- Radon levels in Forest CountyEPA zone 2
56.3%at or above 4 pCi/L
Median 5.0 pCi/L · 16 tests · 22.2 points above Venango County
- Radon levels in Butler CountyEPA zone 1
42.3%at or above 4 pCi/L
Median 3.3 pCi/L · 1,492 tests · 8.2 points above Venango County
- Radon levels in Warren CountyEPA zone 2
38.7%at or above 4 pCi/L
Median 2.8 pCi/L · 119 tests · 4.6 points above Venango County
- Radon levels in Clarion CountyEPA zone 1
31.8%at or above 4 pCi/L
Median 2.9 pCi/L · 107 tests · 2.3 points below Venango County
- Radon levels in Mercer CountyEPA zone 2
31.4%at or above 4 pCi/L
Median 2.5 pCi/L · 318 tests · 2.7 points below Venango County
- Radon levels in Crawford CountyEPA zone 2
29.9%at or above 4 pCi/L
Median 2.6 pCi/L · 221 tests · 4.2 points below Venango County
Venango County, Cities and towns
Cities and towns in Venango County
About 49,346 people live in Venango County by the Census Bureau's estimate for July 1, 2025, 1,024 fewer than in 2020 (−2.0%). That works out to 73 people per square mile of land. No town dominates: Oil City, the largest, has 9,301 residents, 18.8% of the total. Reported testing is thin here: 179 tests over 2020, or 3.6 for every 1,000 residents (2025 estimate), where Pennsylvania as a whole comes to 7.2.
From Oil City to Utica, CDC publishes no figure by town: each reads Venango County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Oil City | 9,301 | −3.0% | 18.8% |
| Franklin | 5,899 | −2.8% | 12.0% |
| Sugarcreek | 4,680 | −1.7% | 9.5% |
| Pleasantville | 819 | −2.5% | 1.7% |
| Polk | 621 | −2.1% | 1.3% |
| Emlentonextends beyond Venango County | 600 | −2.6% | Counted whole |
| Rouseville | 443 | −3.1% | 0.9% |
| Clintonville | 430 | −2.1% | 0.9% |
| Cooperstown | 383 | −3.0% | 0.8% |
| Barkeyville | 183 | −2.7% | 0.4% |
| Utica | 179 | −2.7% | 0.4% |
11 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Venango County is counted whole, so it has no share.
Venango County, Homes
Homes in Venango County
Venango County is a place of houses on their own lots: 78% of its 26,203 homes are detached single-family houses, against 57% across Pennsylvania. Half of its homes were built before 1959, close to Pennsylvania's 1965: 52% date from before 1960 and 12% from 2000 or later. Owners live in 76% of the occupied homes (Pennsylvania: 69%), so for most households a test and a fix are their own to order.
| Homes | Venango County | Pennsylvania |
|---|---|---|
| Housing units | 26,203 | 5,779,663 |
| Detached houses | 78% | 57% |
| In buildings of 5 or more | 5% | 13% |
| Mobile homes | 10% | 4% |
| Built before 1960 | 52% | 45% |
| Built since 2000 | 12% | 14% |
| Middle year built | 1959 | 1965 |
| Owner-occupied | 76% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.