Skip to content
RADON411

Locations and reports

Alaska Radon Map and Levels by Borough or Census Area

Alaska's boroughs and census areas span EPA Zones 2 and 3. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

Predicted
20 of 29boroughs and census areas in Zone 3, EPA's lowest predicted zone
Measured
By areaCDC publishes Alaska's test figures by borough or census area: 26 of 29 boroughs and census areas have one.
Your home
Test to knowNo area figure here is a reading of your home.
How to test this homeFind a certified tester

The data

Alaska, At a glance

Alaska at a glance

Predicted: EPA radon zone

25 of 29 boroughs and census areas classified

EPA classifies counties, not states. Of the 25 boroughs and census areas in Alaska with a zone, 5 are in Zone 2 and 20 in Zone 3. 4 have no zone on file.

  • Zone 2: Moderate predicted potential2 to 4 pCi/L5 of 29 boroughs and census areas · 17.2%
  • Zone 3: Lower predicted potentialless than 2 pCi/L20 of 29 boroughs and census areas · 69.0%
  • No zone on file4 of 29 boroughs and census areas · 13.8%

An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

CDC test figures, area by area

CDC publishes Alaska's radon test figures by borough or census area: 26 of its 29 boroughs and census areas have one. Each one's share is in the borough or census area list.

Alaska, Boroughs and census areas

Alaska boroughs and census areas by EPA zone

Predicted

Alaska's radon map, then all 29 boroughs and census areas by the zone EPA predicts for each, highest reported share of tests at or above 4 pCi/L first. Each has its own report.

Alaska radon map by borough: EPA radon zones. Map of Alaska's 29 counties shaded by EPA radon zone: Zone 2 in amber, Zone 3 in pale sand, grey where no zone is on file. 0 in Zone 1, 5 in Zone 2, 20 in Zone 3, 4 with no zone.
Alaska radon map by boroughEPA radon zones for Alaska's counties: 0 counties in Zone 1, 5 counties in Zone 2, 20 counties in Zone 3, 4 with no zone on file.Predicted potential for each county, not a reading of any home. Homes with elevated levels of radon have been found in all three zones.

Zone 2: moderate predicted potential5

Local help

Alaska, Local resources

Local resources in Alaska

Who to ask in Alaska: its radon program, test kits and professionals.

What Alaska's program says
Phone
907-269-6401
Email
paul.goodfellow@alaska.gov

Radon Action Brief

National Radon Action MonthPre-sale

The radon brief for your Alaska borough or census area, in one dated file.

  • Your area's radon record, explained.
  • Your plan to test this week.
  • Fix costs and pros near you.

Save 64%Sale price: $8.99Price after the sale: $25Ends Jan 31Then $25

Get the briefSee a free sample

Area data, not a test of the building.

What it means

Alaska, Questions

Questions about radon in Alaska

Common questions

8 questions, answered from the figures above

Is radon a problem in Alaska?

EPA's Map of Radon Zones places 0 of the 29 Alaska boroughs and census areas it classifies in Zone 1, the highest predicted potential, 5 in Zone 2 and 20 in Zone 3. An EPA radon zone describes predicted potential across a whole county. It is not intended to determine whether any individual home should be tested, and homes with elevated levels occur in all three zones. EPA recommends testing every home regardless of zone, and testing is the only way to know the radon level in a specific building.

Alaska on the radon mapRadon levels by state

How do I get a radon test in Alaska?

EPA says you can test your home yourself or hire a qualified radon test company, and that either approach takes only a small amount of time and effort. The Alaska radon program is the place to ask about certified testers and any test kit offer it runs.

How to test a homeFree and low-cost kits by stateAlaska radon program

Who does radon mitigation in Alaska?

Radon411 has no radon business listed for Alaska yet. EPA recommends having a qualified contractor fix a home with a radon problem, because lowering high radon levels takes technical knowledge and special skills, and some states require the work to be done by a licensed or certified professional.

How radon mitigation worksWhat mitigation costsRadon professionals in Alaska

Which Alaska counties have the highest radon?

25 of Alaska's 29 boroughs and census areas have an EPA radon zone published here. The remaining 4 have none on file. Radon411 will not rank counties on data it does not hold, and a zone is a prediction for an area rather than a measurement of any building.

What share of radon tests in Alaska are high?

CDC has published no statewide radon testing statistics for Alaska, so we cannot give a figure. Where CDC does publish one, the percentage describes radon tests reported to CDC, not homes.

Which EPA region is Alaska in?

Alaska is in EPA Region 10: Pacific Northwest.

Do I need to test my home in Alaska?

Yes, wherever you live in the state. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. EPA recommends considering a fix when the level is between 2 and 4 pCi/L.

Why does this page show coverage rather than one radon level for Alaska?

A statewide figure averages counties with very different geology and very different numbers of reported tests, so it hides more than it shows. The county report is the level at which the EPA zone, the geologic potential and the reported testing statistics are actually published, which is why the county table above links to every one of them.

If you own, buy, sell or rent

What these figures mean for each reader, with the guide that covers it

The zone counts on this page describe counties across Alaska. They are predictions for areas, and none of them measures your building.

Alaska in figures

The figures above, said in words

What the published data says about Alaska, in words. A zone and a share of tests describe an area, never the level in any one home.

    • Predicted

      Predicted

      EPA places 5 of Alaska's 29 boroughs and census areas in Zone 2 and 20 in Zone 3; 4 have no zone on file.

      No Alaska borough or census area is in Zone 1.

    • Compared

      Calculated by Radon411

      0% of Alaska's boroughs and census areas with a zone on file are in Zone 1, a smaller share than across all U.S. counties (34%). It is a share of counties, not of land, people or homes.

  • Reported tests

    Measured

    CDC has no statewide testing figure for Alaska on file here.

    26 of the 29 boroughs and census areas have a published county figure; the most tests in each one's latest year were reported for Anchorage Municipality (130 tests in 2022), Fairbanks North Star Borough (72 tests in 2022) and Matanuska-Susitna Borough (42 tests in 2022).

Alaska's radon program is the Alaska Radon Program, run by Alaska Division of Geological & Geophysical Surveys; its contacts are under Local resources.

Products

Alaska, Products

Testing and mitigation products

Whatever the figures for Alaska show, only a test tells you about one home.

Test kits and monitors42

See all products

As an Amazon Associate, Radon411 earns from qualifying purchases.

Best radon monitors for Alaska homes, compared

Testing

5

Mitigation

3

Explore

Alaska, Next steps

What to do next

  1. LearnKnow what radon isWhat radon is, how it gets indoors, and why a county zone is not a reading for your home.Learn about radon
  2. TestTest the building you live inShort-term or long-term, where the device goes, and closed-house conditions.How to test
  3. FixBring a high level downHow a mitigation system works, and the retest that confirms it.How mitigation works
  4. Find a proHire a certified professionalMeasurement and mitigation professionals by state, with their certifications.Find a professional

Informational. Follow EPA guidance. EPA says all radon tests should be taken for a minimum of 48 hours, with windows and doors closed from 12 hours before a short-term test.