Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Cumberland County, Pennsylvania
EPA puts Cumberland County in Zone 1, its highest radon zone, and high results are common there: 43.6% of the 2,950 radon tests reported to CDC (2020) came back 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
43.6%
13.3 pts above PA
- Cumberland
- 43.6%
- PA
- 30.3%
2,950 tests, 2020
Median result
3.1pCi/L
Below action level
- Cumberland
- 3.1 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2020
Tests reported
2,950
12th of 63 by tests
- Cumberland
- 2,950
- 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
19 of 63
Middle half
- Cumberland
- 43.6%
- Perry
- 57.7%
By share, of 63 with 30+ tests
Read a result for Cumberland County
Starts at Cumberland County's median, 3.1 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.1 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. Cumberland County's median reported result, 2020.
The data
Cumberland County, At a glance
Cumberland County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Cumberland County in
USGS geologic potential: High across 81% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Cumberland County, 2020
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 45.5% |
| 2015 | 52.9% |
| 2016 | 45.2% |
| 2017 | 43.6% |
| 2018 | 37.4% |
| 2019 | 42.9% |
| 2020 | 43.6% |
2020: 43.6%. Across these years the share ran from 37.4% to 52.9%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 2,950 tests reported to CDC for Cumberland 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).
Cumberland County, Compared
Cumberland County radon figures, compared
Calculated by Radon411In Cumberland County, about 4 in 10 reported tests in 2020 (1,287 of 2,950) were at or above EPA's action level. Against the national pool of 25.5%, the gap is 18.1 points higher. Across 67 Pennsylvania counties pooled together, 30.3% of tests reached that level, so Cumberland County runs 13.3 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 36.9% (Dauphin County) to 57.7% (Perry County). By share, Cumberland County is 19th of 63 Pennsylvania counties with 30 or more tests for the same period.
Year by year, 2014 opened at 45.5% and 2020 closed at 43.6% (about level), with 2015 the high at 52.9%. Half the tests came in under 3.1 pCi/L and half over it; the single highest reached 305.0 pCi/L. Below the action level, 1,134 tests (38.4%) came in under 2 pCi/L, against 44.3% statewide, and 529 tests (17.9%) fell between 2 and 4, against 25.4% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 43.6% share point the same way here. USGS geology rates 81% of the county's land high radon potential.
The busiest year on file was 2015, with 5,153 tests reported; the quietest, 2020, had 2,950.
Cumberland CountyPennsylvania, pooled
43.6% % of tests30.3% % of tests
| Year | Tests | Cumberland County, at or above 4 pCi/L | Pennsylvania, pooled |
|---|---|---|---|
| 2014 | 3,452 | 45.5% | 36.1% |
| 2015 | 5,153 | 52.9% | 37.8% |
| 2016 | 3,724 | 45.2% | 34.4% |
| 2017 | 5,029 | 43.6% | 35.1% |
| 2018 | 3,688 | 37.4% | 30.5% |
| 2019 | 3,352 | 42.9% | 31.4% |
| 2020 | 2,950 | 43.6% | 30.3% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Cumberland County, State data
Pennsylvania's own radon test data
MeasuredWhat Pennsylvania's own agencies publish about radon tests in Cumberland 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 Cumberland County
Pennsylvania DEP publishes its figures by ZIP code, not by county. These are the 21 ZIP codes that lie wholly or partly in Cumberland County, each with the state's own figures for it. Period: Period not stated by DEP.
| ZIP code | What the state reports |
|---|---|
| 17007 | Basement: average 7.6 pCi/L, 1,659 tests; First floor: average 5.1 pCi/L, 259 tests |
| 17011 | Basement: average 8.5 pCi/L, 11,209 tests; First floor: average 5.5 pCi/L, 1,713 tests |
| 17013 | Basement: average 9.4 pCi/L, 9,363 tests; First floor: average 4.5 pCi/L, 2,660 tests |
| 17015 | Basement: average 11.0 pCi/L, 3,249 tests; First floor: average 6.4 pCi/L, 429 tests |
| 17019 | Basement: average 7.6 pCi/L, 3,744 tests; First floor: average 3.7 pCi/L, 481 tests |
| 17025 | Basement: average 8.6 pCi/L, 3,910 tests; First floor: average 5.0 pCi/L, 550 tests |
| 17027 | Basement: average 8.1 pCi/L, 55 tests; First floor: figures not shown |
| 17043 | Basement: average 8.1 pCi/L, 1,259 tests; First floor: average 4.2 pCi/L, 263 tests |
| 17050 | Basement: average 9.4 pCi/L, 10,753 tests; First floor: average 4.8 pCi/L, 1,606 tests |
| 17053 | Basement: average 19.7 pCi/L, 1,009 tests; First floor: average 10.9 pCi/L, 151 tests |
| 17055 | Basement: average 11.9 pCi/L, 13,637 tests; First floor: average 7.1 pCi/L, 2,681 tests |
| 17065 | Basement: average 6.0 pCi/L, 501 tests; First floor: average 4.6 pCi/L, 75 tests |
| 17070 | Basement: average 8.5 pCi/L, 4,217 tests; First floor: average 5.6 pCi/L, 633 tests |
| 17081 | Basement: figures not shown; First floor: figures not shown |
| 17093 | Basement: average 8.3 pCi/L, 57 tests; First floor: figures not shown |
| 17240 | Basement: average 10.4 pCi/L, 228 tests; First floor: average 4.5 pCi/L, 37 tests |
| 17241 | Basement: average 12.2 pCi/L, 983 tests; First floor: average 3.3 pCi/L, 1,157 tests |
| 17257 | Basement: average 10.5 pCi/L, 2,605 tests; First floor: average 4.6 pCi/L, 796 tests |
| 17266 | Basement: average 6.0 pCi/L, 43 tests; First floor: figures not shown |
| 17307 | Basement: average 8.5 pCi/L, 382 tests; First floor: average 4.8 pCi/L, 68 tests |
| 17324 | Basement: average 17.9 pCi/L, 391 tests; First floor: average 6.5 pCi/L, 86 tests |
- 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.
Cumberland County, Geology
The ground under Cumberland County
PredictedMost of the ground under Cumberland County is one class on USGS's geologic map: 80.9% of its land is high radon potential, with 19.1% low. The map puts 76.2% of Cumberland County in the area it calls Great Valley Section and 19.1% in Blue Ridge Gettysburg Basin, with 2 smaller areas beside them. USGS gives the first a radon index of 15, in the high band (12 to 17), and the second 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Great Valley Section | Sandstone, shale and siltstone. | High | 15 | 76.2% |
| Blue Ridge Gettysburg Basin | Metasedimentary and metavolcanic rocks. | Low | 8 | 19.1% |
| Appalachian Mountain Section | Paleozoic sandstone, shale, and limestone. | High | 12 | 2.8% |
| Newark Basin | Gray shale and fluvial sandstone. | High | 12 | 1.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cumberland County beside the ground around it
Cumberland County has more high-potential ground than Pennsylvania as a whole: 80.9% of its land against 70.4%. Of the 5 counties that border it, 4 have more high-potential ground, Dauphin County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Cumberland County, Local resources
Radon testing and mitigation in Cumberland County
Listed radon businesses with an address in Cumberland 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: Mechanicsburg, Camp Hill
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
Cumberland County, Questions
Questions about radon in Cumberland County
Are radon levels high in Cumberland County?
In 2020, 43.6% of the radon tests reported to CDC for Cumberland County, Pennsylvania were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.1 pCi/L. Of 63 Pennsylvania counties with 30 or more tests for the same period, 18 reported a higher share; pooled, the state comes to 30.3%.
Which counties border Cumberland County?
Cumberland County borders 5 counties: Adams County, Perry County, Franklin County, Dauphin County and York County.
Products
Cumberland County, Products
Testing a home in Cumberland County
In Cumberland County, 43.6% of 2,950 tests reported to CDC in 2020 reached 4 pCi/L, against 30.3% pooled across Pennsylvania. In Zone 1 the year-round level in Cumberland 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
RM-63Pro rechargeable radon monitor with a touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Cumberland County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Cumberland County
Explore
Cumberland County, Bordering counties
Counties bordering Cumberland County
Calculated by Radon411- Radon levels in Perry CountyEPA zone 1
57.7%at or above 4 pCi/L
Median 4.9 pCi/L · 189 tests · 14.1 points above Cumberland County
- Radon levels in York CountyEPA zone 1
46.8%at or above 4 pCi/L
Median 3.6 pCi/L · 3,679 tests · 3.2 points above Cumberland County
- Radon levels in Franklin CountyEPA zone 1
42.6%at or above 4 pCi/L
Median 3.1 pCi/L · 1,059 tests · 1.0 points below Cumberland County
- Radon levels in Adams CountyEPA zone 1
39.7%at or above 4 pCi/L
Median 2.8 pCi/L · 852 tests · 3.9 points below Cumberland County
- Radon levels in Dauphin CountyEPA zone 1
36.9%at or above 4 pCi/L
Median 2.0 pCi/L · 2,986 tests · 6.7 points below Cumberland County
Cumberland County, Cities and towns
Cities and towns in Cumberland County
Cumberland County is growing: the Census Bureau puts it at 277,270 residents on July 1, 2025, up 6.5% from 260,251 in 2020. That works out to 508 people per square mile of land. No town dominates: Carlisle, the largest, has 22,693 residents, 8.2% of the total. CDC's 2,950 reported tests for 2020 work out to 10.6 per 1,000 residents (2025 estimate), close to Pennsylvania's 7.2.
From Carlisle to Newburg, CDC publishes no figure by town: each reads Cumberland County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Carlisle | 22,693 | +12.6% | 8.2% |
| Mechanicsburg | 10,037 | +8.1% | 3.6% |
| Camp Hill | 8,199 | +1.0% | 3.0% |
| New Cumberland | 7,590 | +0.8% | 2.7% |
| Shippensburgextends beyond Cumberland County | 5,615 | +2.5% | Counted whole |
| Lemoyne | 4,801 | +2.6% | 1.7% |
| Wormleysburg | 3,078 | +0.8% | 1.1% |
| Mount Holly Springs | 2,019 | +1.2% | 0.7% |
| Shiremanstown | 1,657 | +0.7% | 0.6% |
| Newville | 1,409 | +1.1% | 0.5% |
| Newburg | 359 | +1.7% | 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 Cumberland County is counted whole, so it has no share.
Cumberland County, Homes
Homes in Cumberland County
Of Cumberland County's 110,265 homes, 60% are detached houses, against 57% across Pennsylvania; 12% are in buildings of five or more homes. Much of Cumberland County is recent building: 23% of its homes have gone up since 2000 and the middle year built is 1977, against 1965 for Pennsylvania. 71% of occupied homes are lived in by their owner (Pennsylvania: 69%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Cumberland County | Pennsylvania |
|---|---|---|
| Housing units | 110,265 | 5,779,663 |
| Detached houses | 60% | 57% |
| In buildings of 5 or more | 12% | 13% |
| Mobile homes | 5% | 4% |
| Built before 1960 | 30% | 45% |
| Built since 2000 | 23% | 14% |
| Middle year built | 1977 | 1965 |
| Owner-occupied | 71% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.