Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Oceana County, Michigan
EPA puts Oceana County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 5.9% of 338 (2008 to 2017, laboratory totals) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
5.9%
21.0 pts below MI
- Oceana
- 5.9%
- Michigan
- 26.9%
338 tests, 2008 to 2017
Median result
1.2pCi/L
Below action level
- Oceana
- 1.2 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
338
56th of 82 by tests
- Oceana
- 338
- Oakland
- 16,224
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Michigan
80 of 82
Lowest quarter
- Oceana
- 5.9%
- Lenawee
- 56.7%
By share, of 82 with 30+ tests
Read a result for Oceana County
Starts at Oceana County's median, 1.2 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.2 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Oceana County's median reported result, 2008 to 2017.
The data
Oceana County, At a glance
Oceana County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Oceana County, 2008 to 2017, laboratory
Under 2 pCi/L: 74%2 to 4 pCi/L: 20%4 pCi/L and above: 6%
Of 338 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 251 | 74.3% |
| 2 to 4 pCi/L | 67 | 19.8% |
| 4 pCi/L and above | 20 | 5.9% |
What these figures count
These are the 338 tests reported to CDC for Oceana County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Oceana County, Compared
Oceana County radon figures, compared
Calculated by Radon411Oceana County reports fewer high tests than Michigan overall. 5.9% of its 338 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 21.0 points below the 26.9% pooled from 83 Michigan counties.
Ordered from highest share down, it comes 80th of 82 Michigan counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Oceana County sits 29.8 points below it.
Next door, the shares run from 3.2% in Muskegon County to 14.9% in Lake County, with Muskegon County below Oceana County. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 5.9% share point the same way here.
Half the tests came in under 1.2 pCi/L and half over it; the single highest reached 7.9 pCi/L. The rest split 74.3% under 2 pCi/L and 19.8% from 2 to 4 (Michigan: 46.4% and 26.7%).
CDC's ten-year totals for Oceana County went from 341 tests (2005 to 2014) to 338 (2008 to 2017), the share going from 2.9% to 5.9%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Oceana County, State data
Michigan's own radon test data
MeasuredWhat Michigan's own agencies publish about radon tests in Oceana County, with their period. These are not CDC's figures and are never added to them.
MeasuredState figures, not CDC's
What Michigan EGLE reports for the ZIP codes in Oceana County
Michigan EGLE publishes its figures by ZIP code, not by county. These are the 12 ZIP codes that lie wholly or partly in Oceana County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.
| ZIP code | What the state reports |
|---|---|
| 49402 | 0% greater than 4 pCi/L, median 1.9 pCi/L, 12 tests |
| 49412 | 16% greater than 4 pCi/L, median 1.1 pCi/L, 38 tests |
| 49420 | 2% greater than 4 pCi/L, median 1.0 pCi/L, 50 tests |
| 49421 | 0% greater than 4 pCi/L, median 1.6 pCi/L, 8 tests |
| 49425 | 6% greater than 4 pCi/L, median 1.3 pCi/L, 18 tests |
| 49436 | 0% greater than 4 pCi/L, median 1.1 pCi/L, 7 tests |
| 49437 | 4% greater than 4 pCi/L, median 1.1 pCi/L, 24 tests |
| 49446 | 18% greater than 4 pCi/L, median 1.6 pCi/L, 22 tests |
| 49449 | 4% greater than 4 pCi/L, median 1.1 pCi/L, 27 tests |
| 49452 | 3 tests, figures not shown |
| 49455 | 5% greater than 4 pCi/L, median 1.5 pCi/L, 42 tests |
| 49459 | 13% greater than 4 pCi/L, median 1.6 pCi/L, 8 tests |
- EGLE's figures cover first-time tests only, from organizations willing to provide data.
- EGLE does not publish figures for a ZIP code with fewer than 5 test results.
- EGLE says the map is not intended to decide whether a home should be tested: all homes should be tested.
- ZIP code boundaries are postal delivery areas, not legal or administrative boundaries.
- A ZIP code that crosses the county line is listed whole; its figures cover all of it.
Measured: Michigan EGLE data, About 10 years to 2026-05-15.
Oceana County, Geology
The ground under Oceana County
PredictedUSGS's geologic map puts all of Oceana County's mapped land in one class: low radon potential. All of it lies in the area the map calls Lake Michigan Lobe Deposits, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Lake Michigan Lobe Deposits | Sandy to clayey glacial deposits and some glacial lake deposits. | Low | 8 | 99.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Oceana County beside the ground around it
Across Michigan 9.6% of the land is rated high; none of Oceana County's is. Of the 4 counties that border it, 1 has more moderate-potential ground, Newaygo County the most at 9.8%.
The map rates the ground, not the air in any home.
Local help
Oceana County, Local resources
Radon testing and mitigation in Oceana County
- Michigan Indoor Radon ProgramMichigan Indoor Radon Program, run by Michigan Department of Environment, Great Lakes, and Energy, does not license radon professionals, and answers questions about testing and mitigation in Michigan.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
- Professionals in Michigan69 professionals are listed in Michigan.
What Michigan's program says
- Phone
- 800-723-6642
- Radon@Michigan.gov
- Licensing of radon professionals
Michigan does not license or regulate radon testing and mitigation contractors.
What it means
Oceana County, Questions
Questions about radon in Oceana County
Are radon levels high in Oceana County?
Over the 2008 to 2017 laboratory totals, 5.9% of the radon tests reported to CDC for Oceana County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 79 reported a higher share; pooled, the state comes to 26.9%.
Which counties border Oceana County?
Oceana County borders 4 counties: Muskegon County, Newaygo County, Mason County and Lake County.
Products
Oceana County, Products
Testing a home in Oceana County
In Oceana County, 5.9% of 338 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 26.9% pooled across Michigan. 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 Oceana County.
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
MonitorX-Sense
XR0A-SR battery digital radon detector with a 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
Oceana County, Bordering counties
Counties bordering Oceana County
Calculated by Radon411- Radon levels in Lake CountyEPA zone 3
14.9%at or above 4 pCi/L
Median 1.4 pCi/L · 94 tests · 9.0 points above Oceana County
- Radon levels in Newaygo CountyEPA zone 3
7.9%at or above 4 pCi/L
Median 1.3 pCi/L · 467 tests · 2.0 points above Oceana County
- Radon levels in Mason CountyEPA zone 3
6.3%at or above 4 pCi/L
Median 1.1 pCi/L · 462 tests · 0.4 points above Oceana County
- Radon levels in Muskegon CountyEPA zone 3
3.2%at or above 4 pCi/L
Median 1.2 pCi/L · 629 tests · 2.7 points below Oceana County
Oceana County, Cities and towns
Cities and towns in Oceana County
The Census Bureau estimates 27,177 residents in Oceana County for July 1, 2025, 460 more than in 2020 (+1.7%). That works out to 51 people per square mile of land. No town dominates: Shelby, the largest, has 2,185 residents, 8.0% of the total. CDC's 338 reported tests for 2008 to 2017 work out to 12.4 per 1,000 residents (2025 estimate), close to Michigan's 11.3.
From Shelby to Walkerville, CDC publishes no figure by town: each reads Oceana County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Shelby | 2,185 | +0.6% | 8.0% |
| Hart | 2,065 | +0.5% | 7.6% |
| Hesperiaextends beyond Oceana County | 978 | +0.9% | Counted whole |
| Pentwater | 909 | +1.1% | 3.3% |
| New Era | 462 | +0.7% | 1.7% |
| Rothbury | 448 | +1.6% | 1.6% |
| Walkerville | 272 | +3.8% | 1.0% |
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). A place that extends beyond Oceana County is counted whole, so it has no share.
Oceana County, Homes
Homes in Oceana County
Oceana County is a place of houses on their own lots: 78% of its 15,645 homes are detached single-family houses, against 72% across Michigan. Half of its homes were built before 1978, close to Michigan's 1972: 29% date from before 1960 and 20% from 2000 or later. Owners live in 85% of the occupied homes (Michigan: 73%), so for most households a test and a fix are their own to order.
| Homes | Oceana County | Michigan |
|---|---|---|
| Housing units | 15,645 | 4,599,683 |
| Detached houses | 78% | 72% |
| In buildings of 5 or more | 2% | 13% |
| Mobile homes | 17% | 5% |
| Built before 1960 | 29% | 36% |
| Built since 2000 | 20% | 15% |
| Middle year built | 1978 | 1972 |
| Owner-occupied | 85% | 73% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.