Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Southeast Fairbanks Census Area, Alaska
EPA puts Southeast Fairbanks Census Area in Zone 2, its middle radon zone, and only 10 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
19.4%
Fairbanks North Star Borough
- Fairbanks North Star Borough
- 19.4%
- Matanuska-Susitna Borough
- 14.3%
2 of 5 neighbours have 30+ tests, 2022
Nearest county
19.4%
Fairbanks North Star Borough, 120 miles
- Fairbanks North Star Borough
- 19.4%
- Alaska
- 11.5%
Share at 4+ pCi/L, 72 tests, 2022
Ground above low
100.0%
20.7 pts above Alaska
- Southeast Fairbanks Census Area
- 100.0%
- Alaska
- 79.2%
Share of land USGS rates moderate or high potential
Tests reported
14
Too few for a share
- Southeast Fairbanks Census Area
- 14
- Needed
- 30
2006 to 2015, laboratory
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Southeast Fairbanks 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
Southeast Fairbanks Census Area, At a glance
Southeast Fairbanks Census Area at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Southeast Fairbanks Census Area is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Southeast Fairbanks Census Area, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2016 | 0.0% |
| 2018 | 100.0% |
| 2019 | 20.0% |
| 2020 | 60.0% |
| 2021 | 88.9% |
| 2022 | 80.0% |
2022: 80.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 10 tests were reported to CDC for Southeast Fairbanks 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. Figure above: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).
Southeast Fairbanks Census Area, Compared
Southeast Fairbanks Census Area radon figures, compared
Calculated by Radon411CDC's largest figure for Southeast Fairbanks Census Area rests on 14 tests over the 2006 to 2015 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 7.1 points and no rank or comparison is drawn from it. Results reached as high as 11.8 pCi/L, with a middle value of 2.9 pCi/L.
Of the counties bordering it, 2 have a figure in 2022: Fairbanks North Star Borough reported the largest share at or above 4 pCi/L, 19.4%, and Matanuska-Susitna Borough the smallest, 14.3%. Farther out, Anchorage Municipality (267 miles away) at 3.1% have figures too. 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%). EPA's 1993 map puts Southeast Fairbanks Census Area in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Southeast Fairbanks Census Area, Geology
The ground under Southeast Fairbanks Census Area
PredictedUSGS's geologic map puts all of Southeast Fairbanks Census Area's mapped land in one class: moderate radon potential. The map puts 67.5% of Southeast Fairbanks Census Area in the area it calls Northern Plateaus and 16.8% in Alaska-Aleutian Province, with 2 smaller areas beside them. USGS gives the first a radon index of 11 and the second 9, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern Plateaus | Uraniferous granites, felsic intrusives; clastic and carbonate sedimentary rocks; metamorphic, and volcanic rocks. | Moderate | 11 | 67.5% |
| Alaska-Aleutian Province | sedimentary and mafic volcanic rocks, glacial deposits; felsic intrusives; metamorphic rocks | Moderate | 9 | 16.8% |
| Central Alaska | Uraniferous granites, felsic intrusives; clastic and carbonate sedimentary rocks; metamorphic, and volcanic rocks. | Moderate | 11 | 8.0% |
| Coastal Trough | marine and continental sedimentary rocks; Tertiary volcanic rocks | Moderate | 9 | 7.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Southeast Fairbanks Census Area beside the ground around it
Southeast Fairbanks Census Area has more moderate-potential ground than Alaska as a whole: 100% of its land against 79.2%. Of the 5 boroughs and census areas that border it, none has as large a share of moderate-potential ground; Denali Borough comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Southeast Fairbanks Census Area, Local resources
Radon testing and mitigation in Southeast Fairbanks 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
Southeast Fairbanks Census Area, Questions
Questions about radon in Southeast Fairbanks Census Area
Are radon levels high in Southeast Fairbanks Census Area?
In 2022, 80.0% of the radon tests reported to CDC for Southeast Fairbanks Census Area, Alaska were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.8 pCi/L. Of the counties bordering it, 2 have a figure in 2022: Fairbanks North Star Borough reported the largest share at or above 4 pCi/L, 19.4%, and Matanuska-Susitna Borough the smallest, 14.3%.
Which counties border Southeast Fairbanks Census Area?
Southeast Fairbanks Census Area borders 5 boroughs and census areas: Fairbanks North Star Borough, Valdez-Cordova Census Area, Denali Borough, Matanuska-Susitna Borough and Yukon-Koyukuk Census Area.
Products
Southeast Fairbanks Census Area, Products
Testing a home in Southeast Fairbanks Census Area
No CDC figure names Southeast Fairbanks Census Area; the nearest county with one, Fairbanks North Star Borough (120 miles away), reported 19.4% of its tests at or above 4 pCi/L in 2022, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Southeast Fairbanks 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
MonitorAranet
Radon One 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 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Best radon monitors for Southeast Fairbanks Census Area homes, compared
Explore
Southeast Fairbanks Census Area, Bordering boroughs and census areas
Boroughs and census areas bordering Southeast Fairbanks Census Area
Calculated by Radon411- Radon levels in Denali BoroughEPA zone 3
50.0%at or above 4 pCi/L
Median 2.6 pCi/L · 2 tests
19.4%at or above 4 pCi/L
Median 1.4 pCi/L · 72 tests
14.3%at or above 4 pCi/L
Median 1.1 pCi/L · 42 tests
No CDC figure for 2022; its page reads it against its own neighbours.
No CDC figure for 2022; its page reads it against its own neighbours.
Southeast Fairbanks Census Area, Cities and towns
Cities and towns in Southeast Fairbanks Census Area
Southeast Fairbanks Census Area is growing: the Census Bureau puts it at 7,270 residents on July 1, 2025, up 6.5% from 6,825 in 2020. Spread over its land, that is 0.3 people to the square mile. No town dominates: Delta Junction, the largest, has 977 residents, 13.4% of the total. Together its 2 incorporated places hold 14.7% of those residents; the other 85.3% live outside any of them. Testing is reported here more often than across the state: CDC's 14 reported tests for 2006 to 2015 come to 1.9 for every 1,000 residents (2025 estimate), against 1.0 for Alaska.
From Delta Junction to Eagle, CDC publishes no figure by town: each reads Southeast Fairbanks Census Area's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Delta Junction | 977 | +6.3% | 13.4% |
| Eagle | 89 | +7.2% | 1.2% |
2 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).
Southeast Fairbanks Census Area, Homes
Homes in Southeast Fairbanks Census Area
Southeast Fairbanks Census Area is a place of houses on their own lots: 88% of its 3,520 homes are detached single-family houses, against 63% across Alaska. Half of its homes were built before 1988, close to Alaska's 1985: 5% date from before 1960 and 30% from 2000 or later. Owners live in 76% of the occupied homes (Alaska: 67%), so for most households a test and a fix are their own to order.
| Homes | Southeast Fairbanks Census Area | Alaska |
|---|---|---|
| Housing units | 3,520 | 327,610 |
| Detached houses | 88% | 63% |
| In buildings of 5 or more | 3% | 12% |
| Mobile homes | 4% | 4% |
| Built before 1960 | 5% | 8% |
| Built since 2000 | 30% | 25% |
| Middle year built | 1988 | 1985 |
| Owner-occupied | 76% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.