Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Lawrence County, Pennsylvania
EPA puts Lawrence County in Zone 2, its middle radon zone, and 36.0% of its 286 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
36.0%
5.7 pts above PA
- Lawrence
- 36.0%
- PA
- 30.3%
286 tests, 2020
Median result
2.7pCi/L
Below action level
- Lawrence
- 2.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2020
Tests reported
286
38th of 63 by tests
- Lawrence
- 286
- Montgomery
- 10,508
Reported to CDC before any fix, 2020
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in PA
39 of 63
Middle half
- Lawrence
- 36.0%
- Perry
- 57.7%
By share, of 63 with 30+ tests
Read a result for Lawrence County
Starts at Lawrence County's median, 2.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.7 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. Lawrence County's median reported result, 2020.
The data
Lawrence County, At a glance
Lawrence County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Lawrence County is a
USGS geologic potential: Moderate across 81% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Lawrence County, 2020
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 38.3% |
| 2015 | 43.8% |
| 2016 | 31.5% |
| 2017 | 44.1% |
| 2018 | 37.5% |
| 2019 | 35.8% |
| 2020 | 36.0% |
2020: 36.0%. Across these years the share ran from 31.5% to 44.1%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 286 tests reported to CDC for Lawrence 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).
Lawrence County, Compared
Lawrence County radon figures, compared
Calculated by Radon411In Lawrence County, about 4 in 10 reported tests in 2020 (103 of 286) were at or above EPA's action level. Against the national pool of 25.5%, the gap is 10.5 points higher. Across 67 Pennsylvania counties pooled together, 30.3% of tests reached that level, so Lawrence County runs 5.7 points above its state.
Of 3 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 1 a smaller one; the spread is 31.4% (Mercer County) to 42.4% (Beaver County). By share, Lawrence County is 39th of 63 Pennsylvania counties with 30 or more tests for the same period.
Year by year, 2014 opened at 38.3% and 2020 closed at 36.0% (down 2.3 points), with 2017 the high at 44.1%. Half the tests came in under 2.7 pCi/L and half over it; the single highest reached 123.4 pCi/L. Below the action level, 105 tests (36.7%) came in under 2 pCi/L, against 44.3% statewide, and 78 tests (27.3%) fell between 2 and 4, against 25.4% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 36.0% share point the same way here. USGS geology rates 81% of the county's land moderate radon potential.
The busiest year on file was 2019, with 327 tests reported; the quietest, 2015, had 249.
Lawrence CountyPennsylvania, pooled
| Year | Tests | Lawrence County, at or above 4 pCi/L | Pennsylvania, pooled |
|---|---|---|---|
| 2014 | 274 | 38.3% | 36.1% |
| 2015 | 249 | 43.8% | 37.8% |
| 2016 | 270 | 31.5% | 34.4% |
| 2017 | 286 | 44.1% | 35.1% |
| 2018 | 275 | 37.5% | 30.5% |
| 2019 | 327 | 35.8% | 31.4% |
| 2020 | 286 | 36.0% | 30.3% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Lawrence County, State data
Pennsylvania's own radon test data
MeasuredWhat Pennsylvania's own agencies publish about radon tests in Lawrence 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 Lawrence County
Pennsylvania DEP publishes its figures by ZIP code, not by county. These are the 23 ZIP codes that lie wholly or partly in Lawrence County, each with the state's own figures for it. Period: Period not stated by DEP.
| ZIP code | What the state reports |
|---|---|
| 16037 | Basement: average 9.8 pCi/L, 966 tests; First floor: average 6.9 pCi/L, 102 tests |
| 16051 | Basement: average 11.7 pCi/L, 269 tests; First floor: figures not shown |
| 16057 | Basement: average 5.9 pCi/L, 782 tests; First floor: average 2.6 pCi/L, 65 tests |
| 16101 | Basement: average 4.4 pCi/L, 1,792 tests; First floor: average 3.1 pCi/L, 234 tests |
| 16102 | Basement: average 6.8 pCi/L, 336 tests; First floor: figures not shown |
| 16105 | Basement: average 4.3 pCi/L, 2,269 tests; First floor: average 3.2 pCi/L, 92 tests |
| 16112 | Basement: average 6.1 pCi/L, 86 tests; First floor: figures not shown |
| 16116 | Basement: average 5.9 pCi/L, 147 tests; First floor: figures not shown |
| 16117 | Basement: average 5.4 pCi/L, 1,589 tests; First floor: average 2.6 pCi/L, 90 tests |
| 16120 | Basement: average 8.9 pCi/L, 97 tests; First floor: figures not shown |
| 16123 | Basement: average 10.3 pCi/L, 167 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 |
| 16132 | Basement: figures not shown; First floor: figures not shown |
| 16140 | Basement: figures not shown |
| 16141 | Basement: average 6.1 pCi/L, 66 tests; First floor: figures not shown |
| 16142 | Basement: average 5.3 pCi/L, 625 tests; First floor: average 3.4 pCi/L, 53 tests |
| 16143 | Basement: average 4.7 pCi/L, 158 tests; First floor: figures not shown |
| 16155 | First floor: figures not shown |
| 16156 | Basement: average 4.3 pCi/L, 129 tests; First floor: figures not shown |
| 16157 | Basement: average 9.8 pCi/L, 188 tests; First floor: figures not shown |
| 16159 | Basement: average 4.8 pCi/L, 246 tests; First floor: figures not shown |
| 16160 | Basement: average 7.4 pCi/L, 32 tests; First floor: figures not shown |
| 16172 | Basement: 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.
Lawrence County, Geology
The ground under Lawrence County
PredictedMost of the ground under Lawrence County is one class on USGS's geologic map: 80.7% of its land is moderate radon potential, with 19.3% high. The map puts 80.4% of Lawrence County in the area it calls Glaciated Pittsburgh Plateau and 19.3% in Pennsylvanian Rocks of the Pittsburgh Low Plateau. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 14, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Glaciated Pittsburgh Plateau | Late-Wisconsin till overlying sandstone, shale, limestone, and coal. | Moderate | 11 | 80.4% |
| Pennsylvanian Rocks of the Pittsburgh Low Plateau | Pennsylvanian marine shale, siltstone, sandstone, limestone, and coal. | High | 14 | 19.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lawrence County beside the ground around it
Pennsylvania as a whole has more high-potential ground than Lawrence County: 70.4% of its land, against 19.3% here. Of the 5 counties that border it, 3 have more high-potential ground, Beaver County the most at 99.5%.
The map rates the ground, not the air in any home.
Local help
Lawrence County, Local resources
Radon testing and mitigation in Lawrence County
Listed radon businesses with an address in Lawrence 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.
Listed radon professionals by town: New Castle
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
Lawrence County, Questions
Questions about radon in Lawrence County
Are radon levels high in Lawrence County?
In 2020, 36.0% of the radon tests reported to CDC for Lawrence County, Pennsylvania were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.7 pCi/L. Of 63 Pennsylvania counties with 30 or more tests for the same period, 38 reported a higher share; pooled, the state comes to 30.3%.
Which counties border Lawrence County?
Lawrence County borders 5 counties: Beaver County, PA, Butler County, PA, Mahoning County, OH, Columbiana County, OH and Mercer County, PA.
Products
Lawrence County, Products
Testing a home in Lawrence County
In Lawrence County, 36.0% of 286 tests reported to CDC in 2020 reached 4 pCi/L, against 30.3% pooled across Pennsylvania. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Lawrence County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
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
Monitor
Wave Radon battery smart radon monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Lawrence County, Bordering counties
Counties bordering Lawrence County
Calculated by Radon411- Radon levels in Beaver County, PAEPA zone 1
42.4%at or above 4 pCi/L
Median 3.2 pCi/L · 868 tests · 6.4 points above Lawrence County
- Radon levels in Butler County, PAEPA zone 1
42.3%at or above 4 pCi/L
Median 3.3 pCi/L · 1,492 tests · 6.3 points above Lawrence County
- Radon levels in Mercer County, PAEPA zone 2
31.4%at or above 4 pCi/L
Median 2.5 pCi/L · 318 tests · 4.6 points below Lawrence County
- Radon levels in Mahoning County, OHEPA zone 2
No CDC figure for 2020; its page reads it against its own neighbours.
- Radon levels in Columbiana County, OHEPA zone 1
No CDC figure for 2020; its page reads it against its own neighbours.
Lawrence County, Cities and towns
Cities and towns in Lawrence County
About 83,911 people live in Lawrence County by the Census Bureau's estimate for July 1, 2025, 2,050 fewer than in 2020 (−2.4%). That works out to 235 people per square mile of land. Its largest town, New Castle, has 21,175 residents, 25.2% of the total. Reported testing is thin here: 286 tests over 2020, or 3.4 for every 1,000 residents (2025 estimate), where Pennsylvania as a whole comes to 7.2.
From New Castle to S.N.P.J., CDC publishes no figure by town: each reads Lawrence County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| New Castle | 21,175 | −3.3% | 25.2% |
| Ellwood Cityextends beyond Lawrence County | 7,362 | −3.3% | Counted whole |
| New Wilmington | 2,084 | −0.8% | 2.5% |
| New Beaver | 1,343 | −2.1% | 1.6% |
| Ellport | 1,081 | −0.4% | 1.3% |
| Bessemer | 1,038 | −3.2% | 1.2% |
| South New Castle | 635 | −3.1% | 0.8% |
| Wampum | 541 | −3.0% | 0.6% |
| Enon Valley | 301 | −1.6% | 0.4% |
| Volant | 123 | −3.1% | 0.1% |
| S.N.P.J. | 15 | −6.3% | Under 0.1% |
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 Lawrence County is counted whole, so it has no share.
Lawrence County, Homes
Homes in Lawrence County
Lawrence County is a place of houses on their own lots: 78% of its 39,597 homes are detached single-family houses, against 57% across Pennsylvania. The homes are older than Pennsylvania's as a whole: half were built before 1957 (1965 for Pennsylvania), and 55% date from before 1960. Owners live in 75% of the occupied homes (Pennsylvania: 69%), so for most households a test and a fix are their own to order.
| Homes | Lawrence County | Pennsylvania |
|---|---|---|
| Housing units | 39,597 | 5,779,663 |
| Detached houses | 78% | 57% |
| In buildings of 5 or more | 7% | 13% |
| Mobile homes | 7% | 4% |
| Built before 1960 | 55% | 45% |
| Built since 2000 | 8% | 14% |
| Middle year built | 1957 | 1965 |
| Owner-occupied | 75% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.