Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Kalkaska County, Michigan
EPA puts Kalkaska County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 12.7% of 204 (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
12.7%
14.2 pts below MI
- Kalkaska
- 12.7%
- Michigan
- 26.9%
204 tests, 2008 to 2017
Median result
1.3pCi/L
Below action level
- Kalkaska
- 1.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
204
64th of 82 by tests
- Kalkaska
- 204
- 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
59 of 82
Middle half
- Kalkaska
- 12.7%
- Lenawee
- 56.7%
By share, of 82 with 30+ tests
Read a result for Kalkaska County
Starts at Kalkaska County's median, 1.3 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.3 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. Kalkaska County's median reported result, 2008 to 2017.
The data
Kalkaska County, At a glance
Kalkaska County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 95% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Kalkaska County, 2008 to 2017, laboratory
Under 2 pCi/L: 65%2 to 4 pCi/L: 22%4 pCi/L and above: 13%
Of 204 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 133 | 65.2% |
| 2 to 4 pCi/L | 45 | 22.1% |
| 4 pCi/L and above | 26 | 12.7% |
What these figures count
These are the 204 tests reported to CDC for Kalkaska 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).
Kalkaska County, Compared
Kalkaska County radon figures, compared
Calculated by Radon411Kalkaska County reports fewer high tests than Michigan overall. 12.7% of its 204 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 14.2 points below the 26.9% pooled from 83 Michigan counties.
Ordered from highest share down, it comes 59th 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%; Kalkaska County sits 23.0 points below it.
Next door, the shares run from 6.2% in Crawford County to 38.2% in Otsego County, with Antrim County, Grand Traverse County and Wexford County below Kalkaska County. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 12.7% share point the same way here.
Half the tests came in under 1.3 pCi/L and half over it; the single highest reached 15.3 pCi/L. The rest split 65.2% under 2 pCi/L and 22.1% from 2 to 4 (Michigan: 46.4% and 26.7%).
CDC's ten-year totals for Kalkaska County went from 242 tests (2005 to 2014) to 204 (2008 to 2017), the share going from 14.5% to 12.7%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Kalkaska County, State data
Michigan's own radon test data
MeasuredWhat Michigan's own agencies publish about radon tests in Kalkaska 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 Kalkaska County
Michigan EGLE publishes its figures by ZIP code, not by county. These are the 8 ZIP codes that lie wholly or partly in Kalkaska County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.
| ZIP code | What the state reports |
|---|---|
| 49612 | 5% greater than 4 pCi/L, median 1.2 pCi/L, 19 tests |
| 49633 | 8% greater than 4 pCi/L, median 1.6 pCi/L, 12 tests |
| 49646 | 13% greater than 4 pCi/L, median 1.8 pCi/L, 47 tests |
| 49659 | 12% greater than 4 pCi/L, median 1.9 pCi/L, 25 tests |
| 49676 | 4% greater than 4 pCi/L, median 1.0 pCi/L, 23 tests |
| 49680 | 0% greater than 4 pCi/L, median 1.1 pCi/L, 16 tests |
| 49690 | 11% greater than 4 pCi/L, median 1.8 pCi/L, 63 tests |
| 49738 | 3% greater than 4 pCi/L, median 1.3 pCi/L, 118 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.
Kalkaska County, Geology
The ground under Kalkaska County
PredictedMost of the ground under Kalkaska County is one class on USGS's geologic map: 94.9% of its land is low radon potential, with 5.1% moderate. The map puts 94.9% of Kalkaska County in the area it calls North-Central Michigan Basin and 5.1% in Antrim Shale. USGS gives the first a radon index of 8, in the low band (5 to 8), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| North-Central Michigan Basin | Sandy and silty glacial deposits derived from sandstones, gray shales, limestones, and dolomites. | Low | 8 | 94.9% |
| Antrim Shale | Glacial deposits dervied in part from Antrim black shale. | Moderate | 10 | 5.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Kalkaska County beside the ground around it
Across Michigan 9.6% of the land is rated high; none of Kalkaska County's is. Of the 7 counties that border it, 3 have more moderate-potential ground, Antrim County the most at 77.6%.
The map rates the ground, not the air in any home.
Local help
Kalkaska County, Local resources
Radon testing and mitigation in Kalkaska 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
Kalkaska County, Questions
Questions about radon in Kalkaska County
Are radon levels high in Kalkaska County?
Over the 2008 to 2017 laboratory totals, 12.7% of the radon tests reported to CDC for Kalkaska County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 58 reported a higher share; pooled, the state comes to 26.9%.
Which counties border Kalkaska County?
Kalkaska County borders 7 counties: Antrim County, Crawford County, Missaukee County, Grand Traverse County, Otsego County, Roscommon County and Wexford County.
Products
Kalkaska County, Products
Testing a home in Kalkaska County
In Kalkaska County, 12.7% of 204 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 Kalkaska 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
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Kalkaska County, Bordering counties
Counties bordering Kalkaska County
Calculated by Radon411- Radon levels in Otsego CountyEPA zone 2
38.2%at or above 4 pCi/L
Median 3.2 pCi/L · 1,080 tests · 25.5 points above Kalkaska County
- Radon levels in Missaukee CountyEPA zone 3
14.9%at or above 4 pCi/L
Median 1.6 pCi/L · 350 tests · 2.2 points above Kalkaska County
- Radon levels in Roscommon CountyEPA zone 3
12.7%at or above 4 pCi/L
Median 1.0 pCi/L · 166 tests · 0.0 points above Kalkaska County
- Radon levels in Antrim CountyEPA zone 2
12.0%at or above 4 pCi/L
Median 1.5 pCi/L · 343 tests · 0.7 points below Kalkaska County
- Radon levels in Grand Traverse CountyEPA zone 3
11.5%at or above 4 pCi/L
Median 1.4 pCi/L · 1,614 tests · 1.2 points below Kalkaska County
- Radon levels in Wexford CountyEPA zone 3
9.7%at or above 4 pCi/L
Median 1.5 pCi/L · 621 tests · 3.0 points below Kalkaska County
- Radon levels in Crawford CountyEPA zone 3
6.2%at or above 4 pCi/L
Median 1.3 pCi/L · 194 tests · 6.5 points below Kalkaska County
Kalkaska County, Cities and towns
Cities and towns in Kalkaska County
The Census Bureau estimates 18,693 residents in Kalkaska County for July 1, 2025, 769 more than in 2020 (+4.3%). That works out to 33 people per square mile of land. Kalkaska, its one incorporated place, has 2,258 residents, 12.1% of the total. CDC's 204 reported tests for 2008 to 2017 work out to 10.9 per 1,000 residents (2025 estimate), close to Michigan's 11.3.
Kalkaska is the one incorporated place here; CDC publishes no figure by town, so it reads Kalkaska County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Kalkaska | 2,258 | +3.6% | 12.1% |
One incorporated place, 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).
Kalkaska County, Homes
Homes in Kalkaska County
Kalkaska County is a place of houses on their own lots: 81% of its 11,655 homes are detached single-family houses, against 72% across Michigan. Much of Kalkaska County is recent building: 19% of its homes have gone up since 2000 and the middle year built is 1980, against 1972 for Michigan. Owners live in 87% of the occupied homes (Michigan: 73%), so for most households a test and a fix are their own to order.
| Homes | Kalkaska County | Michigan |
|---|---|---|
| Housing units | 11,655 | 4,599,683 |
| Detached houses | 81% | 72% |
| In buildings of 5 or more | 3% | 13% |
| Mobile homes | 15% | 5% |
| Built before 1960 | 17% | 36% |
| Built since 2000 | 19% | 15% |
| Middle year built | 1980 | 1972 |
| Owner-occupied | 87% | 73% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.