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
Locations and reports
Radon Levels in Prince George's County, Maryland
EPA puts Prince George's County in Zone 2, its middle radon zone, and 19.0% of its 1,603 reported radon tests (2008 to 2017, laboratory totals) 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
19.0%
4.9 pts below MD
- Prince George's
- 19.0%
- Maryland
- 23.9%
1,603 tests, 2008 to 2017
Median result
1.4pCi/L
Below action level
- Prince George's
- 1.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
1,603
8th of 19 by tests
- Prince George's
- 1,603
- Montgomery
- 10,969
Reported to CDC before any fix, 2008 to 2017
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 Maryland
14 of 19
Middle half
- Prince George's
- 19.0%
- Washington
- 56.0%
By share, of 19 with 30+ tests
Read a result for Prince George's County
Starts at Prince George's County's median, 1.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.4 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Prince George's County's median reported result, 2008 to 2017.
The data
Prince George's County, At a glance
Prince George's County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Prince George's County is a
USGS geologic potential: Moderate across 59% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Prince George's County, 2008 to 2017, laboratory
Under 2 pCi/L: 61%2 to 4 pCi/L: 20%4 pCi/L and above: 19%
Of 1,603 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 982 | 61.3% |
| 2 to 4 pCi/L | 317 | 19.8% |
| 4 pCi/L and above | 304 | 19.0% |
What these figures count
These are the 1,603 tests reported to CDC for Prince George's County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Prince George's County, Compared
Prince George's County radon figures, compared
Calculated by Radon411Prince George's County's 1,603 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.4 pCi/L and a maximum of 78.3 pCi/L, and 19.0% reached 4 pCi/L. Maryland as a whole (24 Maryland counties, pooled) comes to 23.9%: 4.9 points higher than here.
Among its state's counties it ranks 14th of 19 Maryland counties with 30 or more tests for the same period. Statewide for the same period, Washington County reported the highest share (56.0%) and Wicomico County the lowest (0.0%).
Below the action level, 982 tests (61.3%) came in under 2 pCi/L, against 56.6% statewide, and 317 tests (19.8%) fell between 2 and 4, against 19.5% statewide. CDC's ten-year totals for Prince George's County went from 1,185 tests (2005 to 2014) to 1,603 (2008 to 2017), the share going from 20.3% to 19.0%.
EPA's 1993 zone map puts Prince George's County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 59% of the county's land moderate radon potential.
Next door, the shares run from 7.3% in Alexandria city, VA to 30.8% in Howard County, with Fairfax County, VA, Montgomery County and Anne Arundel County below Prince George's County.
CDC also counts 74 tests taken after mitigation in Prince George's County for the same period: tests in homes where a fix was already in.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Prince George's County, Geology
The ground under Prince George's County
PredictedUSGS's geologic map splits Prince George's County: 58.7% of its land is moderate radon potential and 38.8% high and 0.1% low. The map puts 58.7% of Prince George's County in the area it calls Western Shore and 38.5% in Western Shore. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Western Shore | Cretaceous, Quaternary, minor Tertiary gravel, sand, silt, clay. | Moderate | 10 | 58.7% |
| Western Shore | Tertiary gravel, sand, silt, clay. | High | 12 | 38.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Prince George's County beside the ground around it
On high-potential ground Prince George's County is close to Maryland as a whole: 38.8% of its land against 36.7%. Of the 8 counties that border it, 4 have more high-potential ground, Howard County the most at 91.2%.
The map rates the ground, not the air in any home.
Local help
Prince George's County, Local resources
Radon testing and mitigation in Prince George's County
- Maryland's radon programMaryland Department of HealthMaryland's radon program offers free or discounted test kits, and answers questions about testing and mitigation in Maryland.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Maryland residents may be eligible for a free radon test kit.
- Compare kits
- Professionals in Maryland5 professionals are listed in Maryland.
What Maryland's program says
- Phone
- 1-866-703-3266
What it means
Prince George's County, Questions
Questions about radon in Prince George's County
Are radon levels high in Prince George's County?
Over the 2008 to 2017 laboratory totals, 19.0% of the radon tests reported to CDC for Prince George's County, Maryland were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of 19 Maryland counties with 30 or more tests for the same period, 13 reported a higher share; pooled, the state comes to 23.9%.
Which counties border Prince George's County?
Prince George's County borders 8 counties: District of Columbia, DC, Alexandria city, VA, Anne Arundel County, MD, Calvert County, MD, Charles County, MD, Howard County, MD, Montgomery County, MD and Fairfax County, VA.
Products
Prince George's County, Products
Testing a home in Prince George's County
In Prince George's County, 19.0% of 1,603 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 23.9% pooled across Maryland. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Prince George's County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorINKBIRD
INK-RD3 battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Best radon monitors for Prince George's County homes, compared
Explore
Prince George's County, Bordering counties
Counties bordering Prince George's County
Calculated by Radon411- Radon levels in Howard County, MDEPA zone 1
30.8%at or above 4 pCi/L
Median 2.0 pCi/L · 4,549 tests · 11.8 points above Prince George's County
- Radon levels in Calvert County, MDEPA zone 1
30.2%at or above 4 pCi/L
Median 2.0 pCi/L · 1,205 tests · 11.2 points above Prince George's County
- Radon levels in Charles County, MDEPA zone 2
24.1%at or above 4 pCi/L
Median 1.8 pCi/L · 477 tests · 5.1 points above Prince George's County
- Radon levels in Fairfax County, VAEPA zone 1
18.7%at or above 4 pCi/L
Median 1.5 pCi/L · 8,657 tests · 0.3 points below Prince George's County
- Radon levels in Montgomery County, MDEPA zone 1
18.0%at or above 4 pCi/L
Median 1.3 pCi/L · 10,969 tests · 1.0 points below Prince George's County
- Radon levels in Anne Arundel County, MDEPA zone 2
17.4%at or above 4 pCi/L
Median 1.4 pCi/L · 4,088 tests · 1.6 points below Prince George's County
- Radon levels in District of Columbia, DCEPA zone 3
8.7%at or above 4 pCi/L
Median 1.2 pCi/L · 2,126 tests · 10.3 points below Prince George's County
- Radon levels in Alexandria city, VAEPA zone 3
7.3%at or above 4 pCi/L
Median 1.0 pCi/L · 410 tests · 11.7 points below Prince George's County
Prince George's County, Cities and towns
Cities and towns in Prince George's County
Prince George's County's population has barely moved since 2020: 970,374 residents on July 1, 2025 against 965,578 then, by the Census Bureau's estimates. Packed into its land, that is 2,011 people per square mile. No town dominates: Bowie, the largest, has 58,383 residents, 6.0% of the total. Together its 27 incorporated places hold 26.7% of those residents; the other 73.3% live outside any of them. Reported testing is thin here: 1,603 tests over 2008 to 2017, or 1.7 for every 1,000 residents (2025 estimate), where Maryland as a whole comes to 7.7.
From Bowie to Eagle Harbor, CDC publishes no figure by town: each reads Prince George's County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Bowie | 58,383 | +0.3% | 6.0% |
| College Park | 35,418 | +2.0% | 3.6% |
| Laurel | 30,254 | +0.9% | 3.1% |
| Greenbelt | 24,948 | +0.4% | 2.6% |
| Hyattsville | 21,158 | +0.1% | 2.2% |
| New Carrollton | 13,644 | +0.2% | 1.4% |
| Bladensburg | 9,671 | +0.2% | 1.0% |
| Mount Rainier | 8,307 | Level | 0.9% |
| Riverdale Park | 7,343 | Level | 0.8% |
| Glenarden | 6,422 | +0.5% | 0.7% |
| Cheverly | 6,164 | Level | 0.6% |
| District Heights | 5,938 | +0.2% | 0.6% |
- Seat Pleasant
- Capitol Heights
- Brentwood
- Berwyn Heights
- Forest Heights
- University Park
- Landover Hills
- Edmonston
- Colmar Manor
- Fairmount Heights
- Cottage City
- Morningside
- Upper Marlboro
- North Brentwood
- Eagle Harbor
27 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).
Prince George's County, Homes
Homes in Prince George's County
Prince George's County has 362,440 homes, and many share a building: 31% are in buildings of five or more, 50% are detached houses, against 51% across Maryland. Half of its homes were built before 1977, close to Maryland's 1979: 22% date from before 1960 and 19% from 2000 or later. 62% of occupied homes are lived in by their owner (Maryland: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Prince George's County | Maryland |
|---|---|---|
| Housing units | 362,440 | 2,545,532 |
| Detached houses | 50% | 51% |
| In buildings of 5 or more | 31% | 23% |
| Mobile homes | 1% | 1% |
| Built before 1960 | 22% | 27% |
| Built since 2000 | 19% | 20% |
| Middle year built | 1977 | 1979 |
| Owner-occupied | 62% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.