Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Prince of Wales-Hyder Census Area, Alaska
EPA has no radon zone on file for Prince of Wales-Hyder Census Area, only 1 radon test from it is on file with CDC (2022), and the only way to know your home's level is to test it.
Data checked By Radon411Methodology
Nearest county
3.1%
Anchorage Municipality, 688 miles
- Anchorage Municipality
- 3.1%
- Alaska
- 11.5%
Share at 4+ pCi/L, 130 tests, 2022
Ground above low
84.9%
5.7 pts above Alaska
- Prince of Wales-Hyder Census Area
- 84.9%
- Alaska
- 79.2%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Prince of Wales-Hyder Census Area
- 1
- Needed
- 30
2022
Read a result for Prince of Wales-Hyder Census Area
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 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.
The data
Prince of Wales-Hyder Census Area, At a glance
Prince of Wales-Hyder Census Area at a glance
Predicted: EPA radon zone
No EPA zone on file
Radon411 has no EPA radon zone on file for Prince of Wales-Hyder Census Area, Alaska, and it does not guess one.
A prediction for the whole county, not a measurement of any address: elevated homes occur in all three zones.
USGS geologic potential: Moderate across 85% of the county's area
Predicted: no EPA zone on file yet
Measured: tests reported to CDC
Radon tests reported for Prince of Wales-Hyder Census Area, 2022
CDC holds 1 reported test for Prince of Wales-Hyder Census Area in 2022, a result of 0.4 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Prince of Wales-Hyder Census Area beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Prince of Wales-Hyder Census Area over 2022, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the borough or census area nor this house.
Measured: CDC tracking data. Measured data period: 2022.
Prince of Wales-Hyder Census Area, Compared
Prince of Wales-Hyder Census Area radon figures, compared
Calculated by Radon411CDC's largest figure for Prince of Wales-Hyder Census Area rests on 1 test in 2022, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 0.4 pCi/L, with a middle value of 0.4 pCi/L.
The nearest counties with a figure are Anchorage Municipality (688 miles away) at 3.1%, Matanuska-Susitna Borough (739 miles away) at 14.3% and Fairbanks North Star Borough (775 miles away) at 19.4%. Pooled across 19 Alaska counties, 11.5% of reported tests reached that level; across every county in the country with a figure, 23.9%.
Statewide for the same period, Fairbanks North Star Borough reported the highest share (19.4%) and Anchorage Municipality the lowest (3.1%). USGS geology rates 85% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Prince of Wales-Hyder Census Area, Geology
The ground under Prince of Wales-Hyder Census Area
PredictedMost of the ground under Prince of Wales-Hyder Census Area is one class on USGS's geologic map: 84.9% of its land is moderate radon potential, with 0.1% low. The map puts 77.6% of Prince of Wales-Hyder Census Area in the area it calls Coastal Trough and 7.3% in Coast Mountains. USGS gives both a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Trough | marine and continental sedimentary rocks; Tertiary volcanic rocks | Moderate | 9 | 77.6% |
| Coast Mountains | Ultramafic through felsic intrusives, Mesozoic mafic volcanic rocks, Mesozoic and Paleozoic sedimentary rocks, schist, gneiss, marble, amphibolite, pelite. | Moderate | 9 | 7.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Prince of Wales-Hyder Census Area beside the ground around it
On moderate-potential ground Prince of Wales-Hyder Census Area is close to Alaska as a whole: 84.9% of its land against 79.2%. Of the 3 boroughs and census areas that border it, 2 have more moderate-potential ground, Petersburg Borough the most at 93.5%.
The map rates the ground, not the air in any home.
Local help
Prince of Wales-Hyder Census Area, Local resources
Radon testing and mitigation in Prince of Wales-Hyder Census Area
- Alaska's radon programAlaska Division of Geological & Geophysical SurveysAlaska's radon program answers questions about testing, mitigation and the rules in Alaska.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Alaska directoryNo professionals are listed in Alaska yet. The state program can point you to registered testers and mitigators.
What Alaska's program says
- Phone
- 907-269-6401
- paul.goodfellow@alaska.gov
What it means
Prince of Wales-Hyder Census Area, Questions
Questions about radon in Prince of Wales-Hyder Census Area
Are radon levels high in Prince of Wales-Hyder Census Area?
In 2022, 0.0% of the radon tests reported to CDC for Prince of Wales-Hyder Census Area, Alaska were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.4 pCi/L. Of the 3 nearest counties with a figure, within 775 miles, the share of tests at or above 4 pCi/L runs from 3.1% to 19.4%.
Which counties border Prince of Wales-Hyder Census Area?
Prince of Wales-Hyder Census Area borders 3 boroughs and census areas: Petersburg Borough, Sitka City and Borough and Ketchikan Gateway Borough.
Products
Prince of Wales-Hyder Census Area, Products
Testing a home in Prince of Wales-Hyder Census Area
No CDC figure names Prince of Wales-Hyder Census Area; the nearest county with one, Anchorage Municipality (688 miles away), reported 3.1% of its tests at or above 4 pCi/L in 2022, the only reading nearby until a test of this home. A short-term kit (2 to 90 days) is the quick first check for a home in Prince of Wales-Hyder Census Area; 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
Monitor
EcoQube Flex battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 15 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Best radon monitors for Prince of Wales-Hyder Census Area homes, compared
Explore
Prince of Wales-Hyder Census Area, Bordering boroughs and census areas
Boroughs and census areas bordering Prince of Wales-Hyder Census Area
Calculated by Radon4110.0%at or above 4 pCi/L
Median 0.2 pCi/L · 1 test
- Radon levels in Sitka City and BoroughEPA zone 3
0.0%at or above 4 pCi/L
Median 0.2 pCi/L · 3 tests
No CDC figure for 2022; its page reads it against its own neighbours.
Prince of Wales-Hyder Census Area, Cities and towns
Cities and towns in Prince of Wales-Hyder Census Area
The Census Bureau estimates 5,777 residents in Prince of Wales-Hyder Census Area for July 1, 2025, 32 more than in 2020 (+0.6%). Spread over its land, that is 1.1 people to the square mile. No town dominates: Craig, the largest, has 1,062 residents, 18.4% of the total. Together its 10 incorporated places hold 61.0% of those residents; the other 39.0% live outside any of them. Reported testing is thin here: 1 test over 2022, or 0.2 for every 1,000 residents (2025 estimate), where Alaska as a whole comes to 0.4.
From Craig to Edna Bay, CDC publishes no figure by town: each reads Prince of Wales-Hyder Census Area's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Craig | 1,062 | +2.4% | 18.4% |
| Klawock | 720 | +0.3% | 12.5% |
| Kake | 544 | +0.4% | 9.4% |
| Thorne Bay | 477 | +0.4% | 8.3% |
| Hydaburg | 378 | −0.3% | 6.5% |
| Coffman Cove | 127 | Level | 2.2% |
| Whale Pass | 88 | Level | 1.5% |
| Port Alexander | 74 | Level | 1.3% |
| Kasaan | 29 | Level | 0.5% |
| Edna Bay | 26 | Level | 0.5% |
10 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 of Wales-Hyder Census Area, Homes
Homes in Prince of Wales-Hyder Census Area
Of Prince of Wales-Hyder Census Area's 3,237 homes, 67% are detached houses, against 63% across Alaska; 20% are mobile homes. Half of its homes were built before 1986, close to Alaska's 1985: 9% date from before 1960 and 18% from 2000 or later. 72% of occupied homes are lived in by their owner (Alaska: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Prince of Wales-Hyder Census Area | Alaska |
|---|---|---|
| Housing units | 3,237 | 327,610 |
| Detached houses | 67% | 63% |
| In buildings of 5 or more | 5% | 12% |
| Mobile homes | 20% | 4% |
| Built before 1960 | 9% | 8% |
| Built since 2000 | 18% | 25% |
| Middle year built | 1986 | 1985 |
| Owner-occupied | 72% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.