Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Barry County, Michigan
EPA puts Barry County in Zone 2, its middle radon zone, and 30.7% of its 1,615 reported radon tests (2008 to 2017, laboratory totals) were at or above 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
30.7%
3.8 pts above MI
- Barry
- 30.7%
- Michigan
- 26.9%
1,615 tests, 2008 to 2017
Median result
2.6pCi/L
Below action level
- Barry
- 2.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
1,615
19th of 82 by tests
- Barry
- 1,615
- Oakland
- 16,224
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Michigan
19 of 82
Top quarter
- Barry
- 30.7%
- Lenawee
- 56.7%
By share, of 82 with 30+ tests
Read a result for Barry County
Starts at Barry County's median, 2.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.6 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Barry County's median reported result, 2008 to 2017.
The data
Barry County, At a glance
Barry County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Barry County is a
USGS geologic potential: Moderate across 93% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Barry County, 2008 to 2017, laboratory
Under 2 pCi/L: 36%2 to 4 pCi/L: 33%4 pCi/L and above: 31%
Of 1,615 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 580 | 35.9% |
| 2 to 4 pCi/L | 539 | 33.4% |
| 4 pCi/L and above | 496 | 30.7% |
What these figures count
These are the 1,615 tests reported to CDC for Barry 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).
Barry County, Compared
Barry County radon figures, compared
Calculated by Radon411In Barry County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (496 of 1,615) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 5.0 points lower. Across 83 Michigan counties pooled together, 26.9% of tests reached that level, so Barry County runs 3.8 points above its state.
Of 6 neighbours with a figure, 4 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 16.5% (Kent County) to 36.8% (Ionia County). By share, Barry County is 19th of 82 Michigan counties with 30 or more tests for the same period.
Half the tests came in under 2.6 pCi/L and half over it; the single highest reached 33.7 pCi/L. Below the action level, 580 tests (35.9%) came in under 2 pCi/L, against 46.4% statewide, and 539 tests (33.4%) fell between 2 and 4, against 26.7% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 30.7% share point the same way here. USGS geology rates 93% of the county's land moderate radon potential. CDC also counts 89 tests taken after mitigation in Barry County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Barry County went from 1,465 tests (2005 to 2014) to 1,615 (2008 to 2017), the share going from 27.2% to 30.7%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Barry County, State data
Michigan's own radon test data
MeasuredWhat Michigan's own agencies publish about radon tests in Barry 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 Barry County
Michigan EGLE publishes its figures by ZIP code, not by county. These are the 15 ZIP codes that lie wholly or partly in Barry County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.
| ZIP code | What the state reports |
|---|---|
| 48849 | 24% greater than 4 pCi/L, median 2.5 pCi/L, 58 tests |
| 48897 | 33% greater than 4 pCi/L, median 2.7 pCi/L, 18 tests |
| 49017 | 36% greater than 4 pCi/L, median 3.2 pCi/L, 121 tests |
| 49021 | 41% greater than 4 pCi/L, median 2.9 pCi/L, 63 tests |
| 49046 | 34% greater than 4 pCi/L, median 2.8 pCi/L, 118 tests |
| 49050 | 19% greater than 4 pCi/L, median 2.3 pCi/L, 21 tests |
| 49058 | 23% greater than 4 pCi/L, median 2.4 pCi/L, 381 tests |
| 49060 | 31% greater than 4 pCi/L, median 3.2 pCi/L, 13 tests |
| 49073 | 13% greater than 4 pCi/L, median 2.3 pCi/L, 45 tests |
| 49080 | 26% greater than 4 pCi/L, median 2.4 pCi/L, 100 tests |
| 49316 | 15% greater than 4 pCi/L, median 1.9 pCi/L, 155 tests |
| 49325 | 31% greater than 4 pCi/L, median 3.0 pCi/L, 13 tests |
| 49333 | 31% greater than 4 pCi/L, median 2.4 pCi/L, 189 tests |
| 49344 | 22% greater than 4 pCi/L, median 1.4 pCi/L, 9 tests |
| 49348 | 15% greater than 4 pCi/L, median 1.6 pCi/L, 52 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.
Barry County, Geology
The ground under Barry County
PredictedMost of the ground under Barry County is one class on USGS's geologic map: 92.9% of its land is moderate radon potential, with 7.1% high. The map puts 92.9% of Barry County in the area it calls South-Central Michigan Basin and 7.1% in Saginaw Lobe Moraine Area. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| South-Central Michigan Basin | Sandy and silty glacial deposits derived from sandstones, gray shales, limestones, and dolomites. | Moderate | 10 | 92.9% |
| Saginaw Lobe Moraine Area | Glacial deposits derived from Sandstone and shale. | High | 12 | 7.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Barry County beside the ground around it
On high-potential ground Barry County is close to Michigan as a whole: 7.1% of its land against 9.6%. Of the 6 counties that border it, 2 have more high-potential ground, Kalamazoo County the most at 83.6%.
The map rates the ground, not the air in any home.
Local help
Barry County, Local resources
Radon testing and mitigation in Barry 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
Barry County, Questions
Questions about radon in Barry County
Are radon levels high in Barry County?
Over the 2008 to 2017 laboratory totals, 30.7% of the radon tests reported to CDC for Barry County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.6 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 18 reported a higher share; pooled, the state comes to 26.9%.
Which counties border Barry County?
Barry County borders 6 counties: Eaton County, Kalamazoo County, Ionia County, Allegan County, Calhoun County and Kent County.
Products
Barry County, Products
Testing a home in Barry County
In Barry County, 30.7% of 1,615 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 26.9% pooled across Michigan. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Barry County; 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
MonitorINKBIRD
INK-RD3 battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Barry County, Bordering counties
Counties bordering Barry County
Calculated by Radon411- Radon levels in Ionia CountyEPA zone 2
36.8%at or above 4 pCi/L
Median 2.9 pCi/L · 1,391 tests · 6.1 points above Barry County
- Radon levels in Calhoun CountyEPA zone 1
36.4%at or above 4 pCi/L
Median 3.0 pCi/L · 1,649 tests · 5.7 points above Barry County
- Radon levels in Eaton CountyEPA zone 2
34.4%at or above 4 pCi/L
Median 2.8 pCi/L · 3,411 tests · 3.7 points above Barry County
- Radon levels in Kalamazoo CountyEPA zone 1
33.3%at or above 4 pCi/L
Median 2.8 pCi/L · 4,100 tests · 2.6 points above Barry County
- Radon levels in Allegan CountyEPA zone 3
18.4%at or above 4 pCi/L
Median 1.7 pCi/L · 766 tests · 12.3 points below Barry County
- Radon levels in Kent CountyEPA zone 2
16.5%at or above 4 pCi/L
Median 1.8 pCi/L · 8,449 tests · 14.2 points below Barry County
Barry County, Cities and towns
Cities and towns in Barry County
The Census Bureau estimates 63,991 residents in Barry County for July 1, 2025, 1,392 more than in 2020 (+2.2%). That works out to 116 people per square mile of land. No town dominates: Hastings, the largest, has 7,490 residents, 11.7% of the total. Together its 5 incorporated places hold 22.6% of those residents; the other 77.4% live outside any of them. Testing is reported here more often than across the state: CDC's 1,615 reported tests for 2008 to 2017 come to 25.2 for every 1,000 residents (2025 estimate), against 11.3 for Michigan.
From Hastings to Woodland, CDC publishes no figure by town: each reads Barry County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Hastings | 7,490 | −0.5% | 11.7% |
| Middleville | 4,407 | +3.4% | 6.9% |
| Nashville | 1,605 | +1.8% | 2.5% |
| Freeport | 552 | +2.0% | 0.9% |
| Woodland | 422 | +2.4% | 0.7% |
5 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).
Barry County, Homes
Homes in Barry County
Barry County is a place of houses on their own lots: 86% of its 27,617 homes are detached single-family houses, against 72% across Michigan. Half of its homes were built before 1976, close to Michigan's 1972: 32% date from before 1960 and 20% from 2000 or later. Owners live in 86% of the occupied homes (Michigan: 73%), so for most households a test and a fix are their own to order.
| Homes | Barry County | Michigan |
|---|---|---|
| Housing units | 27,617 | 4,599,683 |
| Detached houses | 86% | 72% |
| In buildings of 5 or more | 3% | 13% |
| Mobile homes | 8% | 5% |
| Built before 1960 | 32% | 36% |
| Built since 2000 | 20% | 15% |
| Middle year built | 1976 | 1972 |
| Owner-occupied | 86% | 73% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.