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Radon Levels in Camden County, New Jersey

EPA puts Camden County in Zone 2, its middle radon zone, and most reported tests there come back low, though 6.7% of 6,761 (2022) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    6.7%

    3.0 pts below NJ

    Camden
    6.7%
    New Jersey
    9.7%

    6,761 tests, 2022

  • Median result

    0.9pCi/L

    Below action level

    Camden
    0.9 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2022

  • Tests reported

    6,761

    7th of 21 by tests

    Camden
    6,761
    Bergen
    11,440

    Reported to CDC before any fix, 2022

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in New Jersey

    13 of 21

    Middle half

    Camden
    6.7%
    Warren
    24.6%

    By share, of 21 with 30+ tests

Read a result for Camden County

Starts at Camden County's median, 0.9 pCi/L

0.9pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 0.9 pCi/L

Below 2 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Camden County's median reported result, 2022.

Interpret this reading

The data

Camden County, At a glance

Camden County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Camden County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Low across 74% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Camden County, 2022

Share of reported tests at or above 4 pCi/L, by year, Camden County
Share of reported tests at or above 4 pCi/L, by year, Camden County
YearShare of reported tests at or above 4 pCi/L
201410.5%
20159.9%
201610.8%
20178.9%
20189.0%
20198.0%
20209.4%
20218.1%
20226.7%

2022: 6.7%. Across these years the share ran from 6.7% to 10.8%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 6,761 tests reported to CDC for Camden County over 2022, 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: 2022. Measured data period: 2014 to 2022 (every CDC figure on file).

How to read these figures

Camden County, Compared

Camden County radon figures, compared

Calculated by Radon411

Camden County reports fewer high tests than New Jersey overall. 6.7% of its 6,761 tests in 2022 were at or above 4 pCi/L. That is 3.0 points below the 9.7% pooled from 21 New Jersey counties.

Ordered from highest share down, it comes 13th of 21 New Jersey counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 23.9%; Camden County sits 17.2 points below it.

Next door, the shares run from 2.1% in Atlantic County to 12.2% in Gloucester County, with Burlington County and Atlantic County below Camden County. The reported tests do not follow EPA's Zone 2 label for Camden County (predicted average between 2 and 4 pCi/L): 6.7% of them reached 4 pCi/L, fewer than that label suggests.

Half the tests came in under 0.9 pCi/L and half over it; the single highest reached 79.8 pCi/L. The rest split 77.2% under 2 pCi/L and 16.1% from 2 to 4 (New Jersey: 74.9% and 15.4%). Year by year, 2014 opened at 10.5% and 2022 closed at 6.7% (down 3.8 points), with 2016 the high at 10.8%.

The busiest year on file was 2020, with 7,657 tests reported; the quietest, 2014, had 3,581.

Share of reported tests at or above 4 pCi/L by year, Camden County against New Jersey2014 to 2022, years with 30 or more tests: Camden County 10.5% to 6.7%, the state's pooled share 9.7% in 2022.
Camden CountyNew Jersey, pooled
Share of reported tests at or above 4 pCi/L by year, Camden County against New Jersey: data table
YearTestsCamden County, at or above 4 pCi/LNew Jersey, pooled
20143,58110.5%12.8%
20154,1859.9%12.5%
20164,33510.8%12.5%
20175,3668.9%11.9%
20185,5739.0%11.0%
20196,1468.0%11.2%
20207,6579.4%11.7%
20217,0708.1%10.3%
20226,7616.7%9.7%
Camden County against New Jersey, the United States and nearby counties, 2022
AreaTestsAt or above 4 pCi/LMedianDifference from Camden County
Camden County6,7616.7%0.9 pCi/LThis county
New Jersey, pooled21 counties, pooled108,9349.7%Not pooled+3.0 points
United States, pooled853 counties, pooled333,14023.9%Not pooled+17.2 points
Warren Countyhighest in the state2,81924.6%1.5 pCi/L+17.9 points
Cape May Countylowest in the state2460.0%0.3 pCi/L−6.7 points
Gloucester County, NJborders it3,33312.2%1.1 pCi/L+5.5 points
Burlington County, NJborders it5,3556.2%0.9 pCi/L−0.5 points
Atlantic County, NJborders it1,0472.1%0.3 pCi/L−4.6 points
Where Camden County's reported results fell, 2022, beside New Jersey and the United States
ResultCamden County testsCamden County shareNew Jersey shareU.S. shareAgainst New Jersey
Under 2 pCi/L5,21877.2%74.9%54.5%+2.3 points
2 to 4 pCi/L1,08716.1%15.4%21.7%+0.7 points
4 pCi/L and above4566.7%9.7%23.9%−3.0 points
Camden County ranked among the 21 New Jersey counties with 30 or more tests, by share at or above 4 pCi/L, 2022
CountyRankTestsAt or above 4 pCi/LMedian
Mercer County8 of 216,37010.6%0.9 pCi/L
Monmouth County9 of 219,7459.8%0.7 pCi/L
Cumberland County10 of 217528.6%0.9 pCi/L
Passaic County11 of 214,8257.5%0.8 pCi/L
Middlesex County12 of 219,5947.3%0.8 pCi/L
Camden County13 of 216,7616.7%0.9 pCi/L
Burlington County14 of 215,3556.2%0.9 pCi/L
Bergen County15 of 2111,4406.1%1.0 pCi/L
Union County16 of 216,1115.1%0.9 pCi/L
Essex County17 of 218,3414.1%0.7 pCi/L
Hudson County18 of 212,6553.4%0.5 pCi/L
Camden County radon tests by year, against New Jersey's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNew Jersey, pooledChange from the row before
20226,7616.7%0.9 pCi/L79.8 pCi/L9.7%−1.4 points
20217,0708.1%1.1 pCi/L90.9 pCi/L10.3%−1.3 points
20207,6579.4%1.0 pCi/L66.1 pCi/L11.7%+1.4 points
20196,1468.0%1.1 pCi/L60.5 pCi/L11.2%−1.0 points
20185,5739.0%1.0 pCi/L150.2 pCi/L11.0%+0.1 points
20175,3668.9%1.2 pCi/L116.3 pCi/L11.9%−1.9 points
20164,33510.8%1.3 pCi/L42.2 pCi/L12.5%+0.9 points
20154,1859.9%1.2 pCi/L48.4 pCi/L12.5%−0.6 points
20143,58110.5%1.3 pCi/L91.4 pCi/L12.8%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Camden County, Geology

The ground under Camden County

Predicted

USGS's geologic map splits Camden County: 74.2% of its land is low radon potential and 25.8% moderate. The map puts 74.2% of Camden County in the area it calls Outer Coastal Plain and 25.8% in Inner Coastal Plain. USGS gives the first a radon index of 8, in the low band (5 to 8), and the second 10, in the moderate band (9 to 11).

USGS's geologic areas under Camden County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Outer Coastal PlainUpper Tertiary-Quaternary gravel, sand, silt, clay.Low874.2%
Inner Coastal PlainCretaceous-Lower Tertiary gravel, sand, silt, clay.Moderate1025.8%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Camden County beside the ground around it

Across New Jersey 29.8% of the land is rated high; none of Camden County's is. Of the 4 counties that border it, 1 has more high-potential ground, Philadelphia County, PA the most at 36.5%.

Share of land by USGS radon potential: Camden County, the 4 counties bordering it and New Jersey
AreaEPA zoneLow potentialModerate potentialHigh potential
Camden CountyZone 274.2%25.8%None
Gloucester CountyZone 267.7%32.3%None
Philadelphia County, PAZone 3None63.6%36.5%
Burlington CountyZone 276.3%23.7%None
Atlantic CountyZone 390.8%NoneNone
New Jersey21 counties, pooled by land areaVaries53.8%13.8%29.8%

The map rates the ground, not the air in any home.

Local help

Camden County, Local resources

Radon testing and mitigation in Camden County

What New Jersey's program says
Phone
800-648-0394
Licensing of radon professionals
By law, all businesses and professionals conducting radon testing and mitigation in New Jersey must be certified by the DEP.
Disclosure when a home is sold or rented
Under the law, the seller must provide the buyer, at the time the contract of sale is entered into, with a copy of the results of the radon test and evidence of any mitigation or treatment.

What it means

Camden County, Questions

Questions about radon in Camden County

Are radon levels high in Camden County?

In 2022, 6.7% of the radon tests reported to CDC for Camden County, New Jersey were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.9 pCi/L. Of 21 New Jersey counties with 30 or more tests for the same period, 12 reported a higher share; pooled, the state comes to 9.7%.

Which counties border Camden County?

Camden County borders 4 counties: Gloucester County, NJ, Philadelphia County, PA, Burlington County, NJ and Atlantic County, NJ.

Products

Camden County, Products

Testing a home in Camden County

In Camden County, 6.7% of 6,761 tests reported to CDC in 2022 reached 4 pCi/L, against 9.7% pooled across New Jersey. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Camden County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Camden County homes, compared

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Camden County, Bordering counties

Counties bordering Camden County

Calculated by Radon411

Camden County, Cities and towns

Cities and towns in Camden County

The Census Bureau estimates 535,799 residents in Camden County for July 1, 2025, 12,560 more than in 2020 (+2.4%). Packed into its land, that is 2,421 people per square mile. No town dominates: Camden, the largest, has 71,430 residents, 13.3% of the total. CDC's 6,761 reported tests for 2022 work out to 12.6 per 1,000 residents (2025 estimate), close to New Jersey's 11.4.

From Camden to Pine Valley, CDC publishes no figure by town: each reads Camden County's.

The 12 largest cities and towns in Camden County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Camden71,430−0.4%13.3%
Lindenwold21,952+1.6%4.1%
Collingswood14,386+1.5%2.7%
Haddonfield12,740+1.5%2.4%
Bellmawr11,874+1.5%2.2%
Gloucester City11,643+1.5%2.2%
Pine Hill10,909+1.5%2.0%
Audubon8,825+1.4%1.6%
Runnemede8,443+1.5%1.6%
Berlin7,628+2.0%1.4%
Haddon Heights7,609+1.6%1.4%
Stratford7,200+3.3%1.3%
  • Barrington
  • Somerdale
  • Clementon
  • Mount Ephraim
  • Magnolia
  • Merchantville
  • Oaklyn
  • Lawnside
  • Woodlynne
  • Gibbsboro
  • Laurel Springs
  • Brooklawn
  • Chesilhurst
  • Audubon Park
  • Hi-Nella
  • Tavistock
  • Pine Valley

29 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).

Camden County, Homes

Homes in Camden County

Fewer than six in ten of Camden County's 213,188 homes are detached houses (55%, against 53% across New Jersey); the rest are attached, in shared buildings or mobile. Half of its homes were built before 1966, close to New Jersey's 1969: 40% date from before 1960 and 10% from 2000 or later. 65% of occupied homes are lived in by their owner (New Jersey: 64%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Camden County, New Jersey, 2019 to 2023
HomesCamden CountyNew Jersey
Housing units213,1883,775,842
Detached houses55%53%
In buildings of 5 or more20%22%
Mobile homes1%1%
Built before 196040%38%
Built since 200010%15%
Middle year built19661969
Owner-occupied65%64%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.