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 Ottawa County, Oklahoma
EPA puts Ottawa County in Zone 3, its lowest radon zone, and only 3 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
44.7%
Delaware County
- Delaware
- 44.7%
- Newton
- 34.6%
2 of 5 neighbours have 30+ tests, 2006 to 2015
Nearest county
44.7%
Delaware County, 29 miles
- Delaware
- 44.7%
- Oklahoma
- 12.6%
Share at 4+ pCi/L, 38 tests, 2006 to 2015
Ground above low
48.0%
32.9 pts above Oklahoma
- Ottawa
- 48.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
6
Too few for a share
- Ottawa
- 6
- Needed
- 30
2005 to 2014, laboratory
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 Ottawa County
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
Ottawa County, At a glance
Ottawa County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 52% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Ottawa County, 2008 to 2017, laboratory
CDC holds 3 reported tests for Ottawa County over the 2008 to 2017 laboratory totals, with a median of 0.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Ottawa County beside the counties around it is how this page reads it.
What these figures count
Only 3 tests were reported to CDC for Ottawa County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Ottawa County, Compared
Ottawa County radon figures, compared
Calculated by Radon411CDC's largest figure for Ottawa County rests on 6 tests over the 2005 to 2014 laboratory totals, 2 of them at or above 4 pCi/L, so each test moves its share by 16.7 points and no rank or comparison is drawn from it. Results reached as high as 14.1 pCi/L, with a middle value of 1.0 pCi/L.
Of the counties bordering it, 2 have a figure over the 2006 to 2015 laboratory totals: Delaware County reported the largest share at or above 4 pCi/L, 44.7%, and Newton County, MO the smallest, 34.6%. Farther out, Washington County (61 miles away) at 11.3%, Cherokee County (65 miles away) at 32.0% and Tulsa County (80 miles away) at 6.0% have figures too. Pooled across 53 Oklahoma counties, 12.6% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Delaware County reported the highest share (44.7%) and Tulsa County the lowest (6.0%). EPA's 1993 map puts Ottawa County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 52% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Ottawa County, Geology
The ground under Ottawa County
PredictedUSGS's geologic map splits Ottawa County: 52.0% of its land is low radon potential and 48.0% moderate. The map puts 52.0% of Ottawa County in the area it calls Central Oklahoma Plains and Hills and 47.8% in Ozark Plateau. 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 |
|---|---|---|---|---|
| Central Oklahoma Plains and Hills | Nonmarine Permian and Tertiary rocks, including shale, sandstone, and conglomerate in the western part, and Mississippian and Pennsylvanian rocks in the eastern part. | Low | 7 | 52.0% |
| Ozark Plateau | Mississippian and Pennsylvanian limestone and shale. | Moderate | 9 | 47.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Ottawa County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Ottawa County's is. Of the 5 counties that border it, 4 have more moderate-potential ground, McDonald County, MO the most at 100%.
The map rates the ground, not the air in any home.
Local help
Ottawa County, Local resources
Radon testing and mitigation in Ottawa County
- Oklahoma's radon programDepartment of Environmental QualityOklahoma's radon program answers questions about testing, mitigation and the rules in Oklahoma.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 Oklahoma directoryNo professionals are listed in Oklahoma yet. The state program can point you to registered testers and mitigators.
What it means
Ottawa County, Questions
Questions about radon in Ottawa County
Are radon levels high in Ottawa County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Ottawa County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.2 pCi/L. Of the counties bordering it, 2 have a figure over the 2006 to 2015 laboratory totals: Delaware County reported the largest share at or above 4 pCi/L, 44.7%, and Newton County, MO the smallest, 34.6%.
Which counties border Ottawa County?
Ottawa County borders 5 counties: Craig County, OK, Cherokee County, KS, Newton County, MO, McDonald County, MO and Delaware County, OK.
Products
Ottawa County, Products
Testing a home in Ottawa County
No CDC figure names Ottawa County; the nearest county with one, Delaware County (29 miles away), reported 44.7% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, 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 Ottawa County.
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
Explore
Ottawa County, Bordering counties
Counties bordering Ottawa County
Calculated by Radon411- Radon levels in Delaware County, OKEPA zone 2
44.7%at or above 4 pCi/L
Median 2.5 pCi/L · 38 tests
- Radon levels in McDonald County, MOEPA zone 2
43.8%at or above 4 pCi/L
Median 2.4 pCi/L · 16 tests
- Radon levels in Newton County, MOEPA zone 2
34.6%at or above 4 pCi/L
Median 2.5 pCi/L · 153 tests
- Radon levels in Craig County, OKEPA zone 3
33.3%at or above 4 pCi/L
Median 3.7 pCi/L · 3 tests
- Radon levels in Cherokee County, KSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Ottawa County, Cities and towns
Cities and towns in Ottawa County
The Census Bureau estimates 30,438 residents in Ottawa County for July 1, 2025, 198 more than in 2020 (+0.7%). That works out to 65 people per square mile of land. Its largest town, Miami, has 12,893 residents, 42.4% of the total. Together its 8 incorporated places hold 61.6% of those residents; the other 38.4% live outside any of them. CDC's 6 reported tests for 2005 to 2014 work out to 0.2 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.
From Miami to Peoria, CDC publishes no figure by town: each reads Ottawa County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Miami | 12,893 | −0.6% | 42.4% |
| Commerce | 2,260 | Level | 7.4% |
| Fairland | 1,100 | +0.4% | 3.6% |
| Quapaw | 838 | +2.8% | 2.8% |
| Afton | 753 | +1.3% | 2.5% |
| Wyandotte | 488 | +1.7% | 1.6% |
| North Miami | 294 | +1.4% | 1.0% |
| Peoria | 131 | +4.0% | 0.4% |
8 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).
Ottawa County, Homes
Homes in Ottawa County
Ottawa County is a place of houses on their own lots: 77% of its 13,695 homes are detached single-family houses, against 73% across Oklahoma. Half of its homes were built before 1974, close to Oklahoma's 1980: 33% date from before 1960 and 16% from 2000 or later. 67% of occupied homes are lived in by their owner (Oklahoma: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Ottawa County | Oklahoma |
|---|---|---|
| Housing units | 13,695 | 1,763,036 |
| Detached houses | 77% | 73% |
| In buildings of 5 or more | 5% | 12% |
| Mobile homes | 12% | 9% |
| Built before 1960 | 33% | 21% |
| Built since 2000 | 16% | 25% |
| Middle year built | 1974 | 1980 |
| Owner-occupied | 67% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.