Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in North Slope Borough, Alaska
EPA puts North Slope Borough in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2016). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
19.4%
Fairbanks North Star Borough, 363 miles
- Fairbanks North Star Borough
- 19.4%
- Alaska
- 11.5%
Share at 4+ pCi/L, 72 tests, 2022
Ground above low
29.5%
49.7 pts below Alaska
- North Slope Borough
- 29.5%
- Alaska
- 79.2%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- North Slope Borough
- 1
- Needed
- 30
2016
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for North Slope Borough
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
North Slope Borough, At a glance
North Slope Borough at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 70% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for North Slope Borough, 2016
CDC holds 1 reported test for North Slope Borough in 2016, a result of 4.7 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). North Slope Borough beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for North Slope Borough over 2016, 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: 2016.
North Slope Borough, Compared
North Slope Borough radon figures, compared
Calculated by Radon411CDC's largest figure for North Slope Borough rests on 1 test in 2016, 1 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 4.7 pCi/L, with a middle value of 4.7 pCi/L.
The nearest counties with a figure are Fairbanks North Star Borough (363 miles away) at 19.4%, Matanuska-Susitna Borough (497 miles away) at 14.3% and Anchorage Municipality (579 miles away) at 3.1%. 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 North Slope Borough in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 70% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
North Slope Borough, Geology
The ground under North Slope Borough
PredictedUSGS's geologic map splits North Slope Borough: 69.7% of its land is low radon potential and 29.5% moderate. The map puts 44.6% of North Slope Borough in the area it calls Arctic Foothills and 29.5% in Arctic Mountains (Brooks Range), with one smaller area beside them. USGS gives the first a radon index of 7, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Arctic Foothills | Cretaceous sandstone and shale. | Low | 7 | 44.6% |
| Arctic Mountains (Brooks Range) | Precambrian and paleozoic marine sedimentary, metamorphic, and volcanic rocks. | Moderate | 9 | 29.5% |
| Arctic Coastal Plain | Quaternary alluvium; Cretaceous and Tertiary sandstone, shale, silt. | Low | 6 | 25.0% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
North Slope Borough beside the ground around it
Alaska as a whole has more moderate-potential ground than North Slope Borough: 79.2% of its land, against 29.5% here. Every one of the 2 boroughs and census areas that border it has more moderate-potential ground, Yukon-Koyukuk Census Area the most at 100%.
The map rates the ground, not the air in any home.
Local help
North Slope Borough, Local resources
Radon testing and mitigation in North Slope Borough
- 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
North Slope Borough, Questions
Questions about radon in North Slope Borough
Are radon levels high in North Slope Borough?
In 2016, 100.0% of the radon tests reported to CDC for North Slope Borough, Alaska were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.7 pCi/L. Of the 3 nearest counties with a figure, within 579 miles, the share of tests at or above 4 pCi/L runs from 3.1% to 19.4%.
Which counties border North Slope Borough?
North Slope Borough borders 2 boroughs and census areas: Northwest Arctic Borough and Yukon-Koyukuk Census Area.
Products
North Slope Borough, Products
Testing a home in North Slope Borough
No CDC figure names North Slope Borough; the nearest county with one, Fairbanks North Star Borough (363 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. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in North Slope Borough.
Test kits and monitors3
See every kit and monitor
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
Monitor
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
North Slope Borough, Bordering boroughs and census areas
Boroughs and census areas bordering North Slope Borough
Calculated by Radon411boroughs and census areas bordering North Slope Borough: 1 of 2
North Slope Borough, Cities and towns
Cities and towns in North Slope Borough
About 10,582 people live in North Slope Borough by the Census Bureau's estimate for July 1, 2025, 418 fewer than in 2020 (−3.8%). Spread over its land, that is 0.1 people to the square mile. Its largest town, Utqiag?vik, has 4,640 residents, 43.8% of the total. Together its 7 incorporated places hold 70.0% of those residents; the other 30.0% live outside any of them. CDC's 1 reported test for 2016 work out to 0.1 per 1,000 residents (2025 estimate), close to Alaska's 0.1.
From Utqiag?vik to Atqasuk, CDC publishes no figure by town: each reads North Slope Borough's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Utqiag?vik | 4,640 | −5.5% | 43.8% |
| Point Hope | 776 | −5.9% | 7.3% |
| Wainwright | 586 | −6.2% | 5.5% |
| Nuiqsut | 481 | −5.7% | 4.5% |
| Anaktuvuk Pass | 401 | −5.6% | 3.8% |
| Kaktovik | 269 | −5.6% | 2.5% |
| Atqasuk | 258 | −5.5% | 2.4% |
7 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).
North Slope Borough, Homes
Homes in North Slope Borough
Of North Slope Borough's 2,640 homes, 72% are detached houses, against 63% across Alaska; 16% are in buildings of five or more homes. Half of its homes were built before 1984, close to Alaska's 1985: 5% date from before 1960 and 15% from 2000 or later. Most occupied homes here are rented: owners live in 50% (Alaska: 67%). A tenant can run a test; a fix is the landlord's to make.
| Homes | North Slope Borough | Alaska |
|---|---|---|
| Housing units | 2,640 | 327,610 |
| Detached houses | 72% | 63% |
| In buildings of 5 or more | 16% | 12% |
| Mobile homes | 1% | 4% |
| Built before 1960 | 5% | 8% |
| Built since 2000 | 15% | 25% |
| Middle year built | 1984 | 1985 |
| Owner-occupied | 50% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.