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 Bradford County, Pennsylvania
EPA puts Bradford County in Zone 1, its highest radon zone, and high results are common there: 43.4% of the 286 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
43.4%
13.1 pts above PA
- Bradford
- 43.4%
- PA
- 30.3%
286 tests, 2020
Median result
3.4pCi/L
Below action level
- Bradford
- 3.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2020
Tests reported
286
37th of 63 by tests
- Bradford
- 286
- 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
20 of 63
Middle half
- Bradford
- 43.4%
- Perry
- 57.7%
By share, of 63 with 30+ tests
Read a result for Bradford County
Starts at Bradford County's median, 3.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.4 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. Bradford County's median reported result, 2020.
The data
Bradford County, At a glance
Bradford County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Bradford County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Bradford County, 2020
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 36.0% |
| 2015 | 47.9% |
| 2016 | 42.5% |
| 2017 | 40.8% |
| 2018 | 43.2% |
| 2019 | 38.4% |
| 2020 | 43.4% |
2020: 43.4%. Across these years the share ran from 36.0% to 47.9%. 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 Bradford 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).
Bradford County, Compared
Bradford County radon figures, compared
Calculated by Radon411In Bradford County, about 4 in 10 reported tests in 2020 (124 of 286) were at or above EPA's action level. Against the national pool of 25.5%, the gap is 17.9 points higher. Across 67 Pennsylvania counties pooled together, 30.3% of tests reached that level, so Bradford County runs 13.1 points above its state.
Of 6 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 4 a smaller one; the spread is 29.0% (Sullivan County) to 45.2% (Lycoming County). By share, Bradford County is 20th of 63 Pennsylvania counties with 30 or more tests for the same period.
Year by year, 2014 opened at 36.0% and 2020 closed at 43.4% (up 7.4 points), with 2015 the high at 47.9%. Half the tests came in under 3.4 pCi/L and half over it; the single highest reached 127.0 pCi/L. Below the action level, 95 tests (33.2%) came in under 2 pCi/L, against 44.3% statewide, and 67 tests (23.4%) fell between 2 and 4, against 25.4% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 43.4% share point the same way here. USGS geology rates 100% of the county's land high radon potential.
The busiest year on file was 2017, with 426 tests reported; the quietest, 2014, had 264.
Bradford CountyPennsylvania, pooled
43.4% % of tests30.3% % of tests
| Year | Tests | Bradford County, at or above 4 pCi/L | Pennsylvania, pooled |
|---|---|---|---|
| 2014 | 264 | 36.0% | 36.1% |
| 2015 | 284 | 47.9% | 37.8% |
| 2016 | 299 | 42.5% | 34.4% |
| 2017 | 426 | 40.8% | 35.1% |
| 2018 | 315 | 43.2% | 30.5% |
| 2019 | 328 | 38.4% | 31.4% |
| 2020 | 286 | 43.4% | 30.3% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Bradford County, State data
Pennsylvania's own radon test data
MeasuredWhat Pennsylvania's own agencies publish about radon tests in Bradford 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 Bradford County
Pennsylvania DEP publishes its figures by ZIP code, not by county. These are the 28 ZIP codes that lie wholly or partly in Bradford County, each with the state's own figures for it. Period: Period not stated by DEP.
| ZIP code | What the state reports |
|---|---|
| 16910 | Basement: figures not shown; First floor: figures not shown |
| 16914 | Basement: average 6.6 pCi/L, 43 tests; First floor: figures not shown |
| 16925 | Basement: average 7.5 pCi/L, 123 tests; First floor: average 4.6 pCi/L, 40 tests |
| 16926 | Basement: figures not shown; First floor: figures not shown |
| 16936 | Basement: average 9.4 pCi/L, 75 tests; First floor: figures not shown |
| 16947 | Basement: average 4.6 pCi/L, 196 tests; First floor: average 2.2 pCi/L, 68 tests |
| 17724 | Basement: average 7.8 pCi/L, 132 tests; First floor: average 3.4 pCi/L, 60 tests |
| 17765 | Basement: average 4.4 pCi/L, 35 tests; First floor: figures not shown |
| 18614 | Basement: average 13.4 pCi/L, 125 tests; First floor: figures not shown |
| 18616 | Basement: average 5.0 pCi/L, 38 tests; First floor: figures not shown |
| 18623 | Basement: average 6.8 pCi/L, 68 tests; First floor: figures not shown |
| 18810 | Basement: average 8.3 pCi/L, 626 tests; First floor: average 3.8 pCi/L, 187 tests |
| 18814 | Basement: figures not shown; First floor: figures not shown |
| 18817 | Basement: figures not shown; First floor: figures not shown |
| 18829 | Basement: figures not shown; First floor: figures not shown |
| 18830 | Basement: average 13.4 pCi/L, 34 tests; First floor: figures not shown |
| 18831 | Basement: average 9.8 pCi/L, 57 tests; First floor: figures not shown |
| 18832 | Basement: average 7.7 pCi/L, 41 tests; First floor: figures not shown |
| 18833 | Basement: average 6.3 pCi/L, 44 tests; First floor: figures not shown |
| 18837 | Basement: average 6.6 pCi/L, 93 tests; First floor: figures not shown |
| 18840 | Basement: average 11.2 pCi/L, 1,503 tests; First floor: average 5.4 pCi/L, 317 tests |
| 18845 | Basement: figures not shown; First floor: figures not shown |
| 18846 | Basement: average 9.4 pCi/L, 36 tests; First floor: figures not shown |
| 18848 | Basement: average 4.5 pCi/L, 491 tests; First floor: average 2.3 pCi/L, 199 tests |
| 18850 | Basement: average 7.5 pCi/L, 76 tests; First floor: figures not shown |
| 18851 | Basement: figures not shown; First floor: figures not shown |
| 18853 | Basement: average 7.9 pCi/L, 176 tests; First floor: average 3.9 pCi/L, 57 tests |
| 18854 | Basement: average 15.5 pCi/L, 49 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.
Bradford County, Geology
The ground under Bradford County
PredictedUSGS's geologic map puts all of Bradford County's mapped land in one class: high radon potential. The map puts 85.8% of Bradford County in the area it calls Glaciated Low Plateau Western Portion and 14.2% in Mountainous High Plateau. USGS gives the first a radon index of 13 and the second 12, both in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Glaciated Low Plateau Western Portion | Moderately thick glacial till overlying sandstone, siltstone, mudstone, and shale. | High | 13 | 85.8% |
| Mountainous High Plateau | Sandstone, shale and conglomerate. | High | 12 | 14.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Bradford County beside the ground around it
Bradford County has more high-potential ground than Pennsylvania as a whole: 100% of its land against 70.4%. Of the 7 counties that border it, none has as large a share of high-potential ground; Chemung County, NY comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Bradford County, Local resources
Radon testing and mitigation in Bradford 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
Bradford County, Questions
Questions about radon in Bradford County
Are radon levels high in Bradford County?
In 2020, 43.4% of the radon tests reported to CDC for Bradford County, Pennsylvania were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.4 pCi/L. Of 63 Pennsylvania counties with 30 or more tests for the same period, 19 reported a higher share; pooled, the state comes to 30.3%.
Which counties border Bradford County?
Bradford County borders 7 counties: Sullivan County, PA, Chemung County, NY, Wyoming County, PA, Tioga County, NY, Susquehanna County, PA, Tioga County, PA and Lycoming County, PA.
Products
Bradford County, Products
Testing a home in Bradford County
In Bradford County, 43.4% of 286 tests reported to CDC in 2020 reached 4 pCi/L, against 30.3% pooled across Pennsylvania. In Zone 1 the year-round level in Bradford 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
MonitorKidde
Radon Detector (RAB) battery digital radon detector with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Bradford County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Bradford County
Explore
Bradford County, Bordering counties
Counties bordering Bradford County
Calculated by Radon411- Radon levels in Lycoming County, PAEPA zone 1
45.2%at or above 4 pCi/L
Median 3.5 pCi/L · 562 tests · 1.8 points above Bradford County
- Radon levels in Tioga County, PAEPA zone 1
45.0%at or above 4 pCi/L
Median 3.2 pCi/L · 160 tests · 1.6 points above Bradford County
- Radon levels in Susquehanna County, PAEPA zone 1
37.9%at or above 4 pCi/L
Median 3.0 pCi/L · 116 tests · 5.5 points below Bradford County
- Radon levels in Tioga County, NYEPA zone 1
32.4%at or above 4 pCi/L
Median 2.5 pCi/L · 34 tests · 11.0 points below Bradford County
- Radon levels in Wyoming County, PAEPA zone 1
30.9%at or above 4 pCi/L
Median 2.0 pCi/L · 123 tests · 12.5 points below Bradford County
- Radon levels in Sullivan County, PAEPA zone 1
29.0%at or above 4 pCi/L
Median 2.0 pCi/L · 31 tests · 14.4 points below Bradford County
- Radon levels in Chemung County, NYEPA zone 1
0.0%at or above 4 pCi/L
Median 2.6 pCi/L · 5 tests · 43.4 points below Bradford County
Bradford County, Cities and towns
Cities and towns in Bradford County
About 59,600 people live in Bradford County by the Census Bureau's estimate for July 1, 2025, 375 fewer than in 2020 (−0.6%). That works out to 52 people per square mile of land. No town dominates: Sayre, the largest, has 5,328 residents, 8.9% of the total. Together its 14 incorporated places hold 29.8% of those residents; the other 70.2% live outside any of them. CDC's 286 reported tests for 2020 work out to 4.8 per 1,000 residents (2025 estimate), close to Pennsylvania's 7.2.
From Sayre to Alba, CDC publishes no figure by town: each reads Bradford County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Sayre | 5,328 | −2.0% | 8.9% |
| Athens | 3,205 | −1.9% | 5.4% |
| Towanda | 2,746 | −1.8% | 4.6% |
| Canton | 1,682 | −1.5% | 2.8% |
| Troy | 1,227 | −1.8% | 2.1% |
| South Waverly | 1,089 | +1.4% | 1.8% |
| Wyalusing | 608 | −1.8% | 1.0% |
| Monroe | 479 | −0.8% | 0.8% |
| Rome | 373 | −1.3% | 0.6% |
| LeRaysville | 285 | −1.7% | 0.5% |
| New Albany | 250 | −2.7% | 0.4% |
| Sylvania | 207 | −1.9% | 0.3% |
- Burlington
- Alba
14 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).
Bradford County, Homes
Homes in Bradford County
Of Bradford County's 29,421 homes, 71% are detached houses, against 57% across Pennsylvania; 14% are mobile homes. Half of its homes were built before 1968, close to Pennsylvania's 1965: 44% date from before 1960 and 12% from 2000 or later. 72% 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 | Bradford County | Pennsylvania |
|---|---|---|
| Housing units | 29,421 | 5,779,663 |
| Detached houses | 71% | 57% |
| In buildings of 5 or more | 6% | 13% |
| Mobile homes | 14% | 4% |
| Built before 1960 | 44% | 45% |
| Built since 2000 | 12% | 14% |
| Middle year built | 1968 | 1965 |
| Owner-occupied | 72% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.