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 Huntingdon County, Pennsylvania
EPA puts Huntingdon County in Zone 1, its highest radon zone, and high results are common there: 54.0% of the 100 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
54.0%
23.7 pts above PA
- Huntingdon
- 54.0%
- PA
- 30.3%
100 tests, 2020
Median result
4.5pCi/L
Action level reached
- Huntingdon
- 4.5 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2020
Tests reported
100
57th of 63 by tests
- Huntingdon
- 100
- 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
4 of 63
Top quarter
- Huntingdon
- 54.0%
- Perry
- 57.7%
By share, of 63 with 30+ tests
Read a result for Huntingdon County
Starts at Huntingdon County's median, 4.5 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.5 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. Huntingdon County's median reported result, 2020.
The data
Huntingdon County, At a glance
Huntingdon County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Huntingdon 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 Huntingdon County, 2020
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 67.4% |
| 2015 | 49.1% |
| 2016 | 51.4% |
| 2017 | 52.9% |
| 2018 | 55.0% |
| 2019 | 54.6% |
| 2020 | 54.0% |
2020: 54.0%. Across these years the share ran from 49.1% to 67.4%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 100 tests reported to CDC for Huntingdon 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).
Huntingdon County, Compared
Huntingdon County radon figures, compared
Calculated by Radon411More than half: 54.0% of the 100 radon tests reported to CDC for Huntingdon County in 2020 read at least 4 pCi/L. That places it 4th of 63 Pennsylvania counties with 30 or more tests for the same period. That is 23.7 points above the 30.3% pooled from 67 Pennsylvania counties.
The median result, 4.5 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 109.8 pCi/L. The rest split 29.0% under 2 pCi/L and 17.0% from 2 to 4 (Pennsylvania: 44.3% and 25.4%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 54.0% share point the same way here.
No bordering county with a figure for the same period reported a higher share; the closest is Juniata County at 52.9%, the lowest Centre County at 39.3%. Statewide for the same period, Perry County reported the highest share (57.7%) and Philadelphia County the lowest (10.6%).
The busiest year on file was 2016, with 218 tests reported; the quietest, 2020, had 100.
Over 7 years of annual figures the share fell 13.4 points, from 67.4% in 2014 to 54.0% in 2020; its peak was 67.4% in 2014. Nationally, every county with a figure for the same period pools to 25.5%; Huntingdon County sits 28.5 points above it.
Huntingdon CountyPennsylvania, pooled
54.0% % of tests30.3% % of tests
| Year | Tests | Huntingdon County, at or above 4 pCi/L | Pennsylvania, pooled |
|---|---|---|---|
| 2014 | 141 | 67.4% | 36.1% |
| 2015 | 161 | 49.1% | 37.8% |
| 2016 | 218 | 51.4% | 34.4% |
| 2017 | 155 | 52.9% | 35.1% |
| 2018 | 109 | 55.0% | 30.5% |
| 2019 | 119 | 54.6% | 31.4% |
| 2020 | 100 | 54.0% | 30.3% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Huntingdon County, State data
Pennsylvania's own radon test data
MeasuredWhat Pennsylvania's own agencies publish about radon tests in Huntingdon 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 Huntingdon County
Pennsylvania DEP publishes its figures by ZIP code, not by county. These are the 34 ZIP codes that lie wholly or partly in Huntingdon County, each with the state's own figures for it. Period: Period not stated by DEP.
| ZIP code | What the state reports |
|---|---|
| 16611 | Basement: average 10.5 pCi/L, 103 tests; First floor: figures not shown |
| 16621 | Basement: average 7.4 pCi/L, 32 tests; First floor: figures not shown |
| 16622 | Basement: figures not shown; First floor: figures not shown |
| 16623 | Basement: average 5.5 pCi/L, 30 tests; First floor: figures not shown |
| 16634 | Basement: figures not shown; First floor: figures not shown |
| 16638 | Basement: figures not shown; First floor: figures not shown |
| 16647 | Basement: average 20.5 pCi/L, 91 tests; First floor: figures not shown |
| 16652 | Basement: average 7.6 pCi/L, 1,587 tests; First floor: average 2.9 pCi/L, 147 tests |
| 16654 | Basement: figures not shown |
| 16657 | Basement: average 8.6 pCi/L, 93 tests; First floor: figures not shown |
| 16669 | Basement: average 9.8 pCi/L, 106 tests; First floor: figures not shown |
| 16674 | Basement: figures not shown; First floor: figures not shown |
| 16678 | Basement: average 9.4 pCi/L, 94 tests; First floor: figures not shown |
| 16683 | Basement: average 10.0 pCi/L, 33 tests; First floor: figures not shown |
| 16685 | Basement: figures not shown; First floor: figures not shown |
| 16686 | Basement: average 8.2 pCi/L, 869 tests; First floor: average 3.0 pCi/L, 103 tests |
| 16694 | Basement: figures not shown; First floor: figures not shown |
| 16865 | Basement: average 10.3 pCi/L, 412 tests; First floor: average 8.2 pCi/L, 31 tests |
| 16877 | Basement: average 15.2 pCi/L, 277 tests; First floor: average 4.3 pCi/L, 61 tests |
| 17002 | Basement: figures not shown; First floor: figures not shown |
| 17021 | Basement: figures not shown; First floor: figures not shown |
| 17052 | Basement: average 6.9 pCi/L, 36 tests; First floor: figures not shown |
| 17060 | Basement: average 6.0 pCi/L, 37 tests; First floor: figures not shown |
| 17066 | Basement: average 8.3 pCi/L, 98 tests; First floor: figures not shown |
| 17213 | Basement: figures not shown; First floor: figures not shown |
| 17215 | Basement: figures not shown; First floor: figures not shown |
| 17229 | Basement: average 10.1 pCi/L, 40 tests; First floor: figures not shown |
| 17239 | Basement: figures not shown |
| 17243 | Basement: average 11.2 pCi/L, 37 tests; First floor: figures not shown |
| 17249 | Basement: figures not shown |
| 17253 | Basement: figures not shown |
| 17255 | Basement: average 17.2 pCi/L, 36 tests; First floor: figures not shown |
| 17260 | Basement: average 12.9 pCi/L, 30 tests; First floor: figures not shown |
| 17264 | Basement: average 24.1 pCi/L, 60 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.
Huntingdon County, Geology
The ground under Huntingdon County
PredictedUSGS's geologic map puts all of Huntingdon County's mapped land in one class: high radon potential. All of it lies in the area the map calls Appalachian Mountain Section, to which USGS gives a radon index of 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Appalachian Mountain Section | Paleozoic sandstone, shale, and limestone. | High | 12 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Huntingdon County beside the ground around it
Huntingdon 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; Fulton County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Huntingdon County, Local resources
Radon testing and mitigation in Huntingdon 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
Huntingdon County, Questions
Questions about radon in Huntingdon County
Are radon levels high in Huntingdon County?
In 2020, 54.0% of the radon tests reported to CDC for Huntingdon County, Pennsylvania were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.5 pCi/L. Of 63 Pennsylvania counties with 30 or more tests for the same period, 3 reported a higher share; pooled, the state comes to 30.3%.
Which counties border Huntingdon County?
Huntingdon County borders 7 counties: Blair County, Mifflin County, Juniata County, Franklin County, Fulton County, Bedford County and Centre County.
Products
Huntingdon County, Products
Testing a home in Huntingdon County
In Huntingdon County, 54.0% of 100 tests reported to CDC in 2020 reached 4 pCi/L, against 30.3% pooled across Pennsylvania. In Zone 1 the year-round level in Huntingdon 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
Corentium Home 2 battery digital radon monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
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
Huntingdon County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Huntingdon County
Explore
Huntingdon County, Bordering counties
Counties bordering Huntingdon County
Calculated by Radon411- Radon levels in Fulton CountyEPA zone 1
67.9%at or above 4 pCi/L
Median 8.3 pCi/L · 28 tests · 13.9 points above Huntingdon County
- Radon levels in Juniata CountyEPA zone 1
52.9%at or above 4 pCi/L
Median 4.4 pCi/L · 87 tests · 1.1 points below Huntingdon County
- Radon levels in Bedford CountyEPA zone 1
47.8%at or above 4 pCi/L
Median 3.8 pCi/L · 69 tests · 6.2 points below Huntingdon County
- Radon levels in Franklin CountyEPA zone 1
42.6%at or above 4 pCi/L
Median 3.1 pCi/L · 1,059 tests · 11.4 points below Huntingdon County
- Radon levels in Blair CountyEPA zone 1
42.0%at or above 4 pCi/L
Median 3.2 pCi/L · 424 tests · 12.0 points below Huntingdon County
- Radon levels in Mifflin CountyEPA zone 1
41.4%at or above 4 pCi/L
Median 2.7 pCi/L · 111 tests · 12.6 points below Huntingdon County
- Radon levels in Centre CountyEPA zone 1
39.3%at or above 4 pCi/L
Median 2.3 pCi/L · 670 tests · 14.7 points below Huntingdon County
Huntingdon County, Cities and towns
Cities and towns in Huntingdon County
About 43,001 people live in Huntingdon County by the Census Bureau's estimate for July 1, 2025, 1,042 fewer than in 2020 (−2.4%). That works out to 49 people per square mile of land. No town dominates: Huntingdon, the largest, has 6,862 residents, 16.0% of the total. Together its 18 incorporated places hold 31.0% of those residents; the other 69.0% live outside any of them. Reported testing is thin here: 100 tests over 2020, or 2.3 for every 1,000 residents (2025 estimate), where Pennsylvania as a whole comes to 7.2.
From Huntingdon to Shade Gap, CDC publishes no figure by town: each reads Huntingdon County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Huntingdon | 6,862 | +0.7% | 16.0% |
| Mount Union | 2,231 | −3.2% | 5.2% |
| Three Springs | 428 | −2.9% | 1.0% |
| Petersburg | 416 | −0.2% | 1.0% |
| Orbisonia | 413 | −2.4% | 1.0% |
| Mapleton | 402 | −3.4% | 0.9% |
| Rockhill | 372 | −0.5% | 0.9% |
| Alexandria | 367 | −3.4% | 0.9% |
| Broad Top City | 359 | −2.2% | 0.8% |
| Saltillo | 300 | −3.8% | 0.7% |
| Mill Creek | 283 | −3.7% | 0.7% |
| Marklesburg | 181 | −3.2% | 0.4% |
- Dudley
- Shirleysburg
- Cassville
- Birmingham
- Coalmont
- Shade Gap
18 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).
Huntingdon County, Homes
Homes in Huntingdon County
Huntingdon County is a place of houses on their own lots: 76% of its 20,932 homes are detached single-family houses, against 57% across Pennsylvania. Half of its homes were built before 1972, close to Pennsylvania's 1965: 39% date from before 1960 and 16% from 2000 or later. Owners live in 79% of the occupied homes (Pennsylvania: 69%), so for most households a test and a fix are their own to order.
| Homes | Huntingdon County | Pennsylvania |
|---|---|---|
| Housing units | 20,932 | 5,779,663 |
| Detached houses | 76% | 57% |
| In buildings of 5 or more | 3% | 13% |
| Mobile homes | 12% | 4% |
| Built before 1960 | 39% | 45% |
| Built since 2000 | 16% | 14% |
| Middle year built | 1972 | 1965 |
| Owner-occupied | 79% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.