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 Presque Isle County, Michigan
EPA puts Presque Isle County in Zone 2, its middle radon zone, and 22.8% of its 509 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
22.8%
4.1 pts below MI
- Presque Isle
- 22.8%
- Michigan
- 26.9%
509 tests, 2008 to 2017
Median result
1.9pCi/L
Below action level
- Presque Isle
- 1.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
509
45th of 82 by tests
- Presque Isle
- 509
- 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
28 of 82
Middle half
- Presque Isle
- 22.8%
- Lenawee
- 56.7%
By share, of 82 with 30+ tests
Read a result for Presque Isle County
Starts at Presque Isle County's median, 1.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.9 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. Presque Isle County's median reported result, 2008 to 2017.
The data
Presque Isle County, At a glance
Presque Isle County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Presque Isle County is a
USGS geologic potential: Moderate across 52% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Presque Isle County, 2008 to 2017, laboratory
Under 2 pCi/L: 52%2 to 4 pCi/L: 25%4 pCi/L and above: 23%
Of 509 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 263 | 51.7% |
| 2 to 4 pCi/L | 130 | 25.5% |
| 4 pCi/L and above | 116 | 22.8% |
What these figures count
These are the 509 tests reported to CDC for Presque Isle 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).
Presque Isle County, Compared
Presque Isle County radon figures, compared
Calculated by Radon411Presque Isle County's 509 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.9 pCi/L and a maximum of 193.7 pCi/L, and 22.8% reached 4 pCi/L. Michigan as a whole (83 Michigan counties, pooled) comes to 26.9%: 4.1 points higher than here.
Among its state's counties it ranks 28th of 82 Michigan counties with 30 or more tests for the same period. Statewide for the same period, Lenawee County reported the highest share (56.7%) and Muskegon County the lowest (3.2%).
Below the action level, 263 tests (51.7%) came in under 2 pCi/L, against 46.4% statewide, and 130 tests (25.5%) fell between 2 and 4, against 26.7% statewide. CDC's ten-year totals for Presque Isle County went from 441 tests (2005 to 2014) to 509 (2008 to 2017), the share going from 23.1% to 22.8%.
EPA's 1993 zone map puts Presque Isle County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 52% of the county's land moderate radon potential.
Next door, the shares run from 8.0% in Cheboygan County to 14.7% in Montmorency County, with Montmorency County, Alpena County and Cheboygan County below Presque Isle County.
CDC also counts 15 tests taken after mitigation in Presque Isle County for the same period: tests in homes where a fix was already in.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Presque Isle County, State data
Michigan's own radon test data
MeasuredWhat Michigan's own agencies publish about radon tests in Presque Isle 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 Presque Isle County
Michigan EGLE publishes its figures by ZIP code, not by county. These are the 7 ZIP codes that lie wholly or partly in Presque Isle County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.
| ZIP code | What the state reports |
|---|---|
| 49707 | 7% greater than 4 pCi/L, median 0.6 pCi/L, 331 tests |
| 49743 | 0% greater than 4 pCi/L, median 1.3 pCi/L, 8 tests |
| 49759 | 7% greater than 4 pCi/L, median 1.3 pCi/L, 15 tests |
| 49765 | 5% greater than 4 pCi/L, median 0.9 pCi/L, 19 tests |
| 49776 | 46% greater than 4 pCi/L, median 3.5 pCi/L, 26 tests |
| 49777 | 31% greater than 4 pCi/L, median 2.1 pCi/L, 29 tests |
| 49779 | 14% greater than 4 pCi/L, median 2.0 pCi/L, 66 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.
Presque Isle County, Geology
The ground under Presque Isle County
PredictedUSGS's geologic map splits Presque Isle County: 52.3% of its land is moderate radon potential and 47.4% low. The map puts 52.3% of Presque Isle County in the area it calls Antrim Shale and 47.4% in Glacial lakes. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Antrim Shale | Glacial deposits dervied in part from Antrim black shale. | Moderate | 10 | 52.3% |
| Glacial lakes | Silt and clay glacial lake deposits. | Low | 7 | 47.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Presque Isle County beside the ground around it
Across Michigan 9.6% of the land is rated high; none of Presque Isle County's is. Of the 3 counties that border it, 2 have more moderate-potential ground, Montmorency County the most at 97.9%.
The map rates the ground, not the air in any home.
Local help
Presque Isle County, Local resources
Radon testing and mitigation in Presque Isle 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
Presque Isle County, Questions
Questions about radon in Presque Isle County
Are radon levels high in Presque Isle County?
Over the 2008 to 2017 laboratory totals, 22.8% of the radon tests reported to CDC for Presque Isle County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.9 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 27 reported a higher share; pooled, the state comes to 26.9%.
Which counties border Presque Isle County?
Presque Isle County borders 3 counties: Cheboygan County, Alpena County and Montmorency County.
Products
Presque Isle County, Products
Testing a home in Presque Isle County
In Presque Isle County, 22.8% of 509 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 Presque Isle 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
Monitor
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Presque Isle County, Bordering counties
Counties bordering Presque Isle County
Calculated by Radon411- Radon levels in Montmorency CountyEPA zone 2
14.7%at or above 4 pCi/L
Median 1.6 pCi/L · 191 tests · 8.1 points below Presque Isle County
- Radon levels in Alpena CountyEPA zone 2
13.3%at or above 4 pCi/L
Median 0.9 pCi/L · 1,139 tests · 9.5 points below Presque Isle County
- Radon levels in Cheboygan CountyEPA zone 3
8.0%at or above 4 pCi/L
Median 0.8 pCi/L · 465 tests · 14.8 points below Presque Isle County
Presque Isle County, Cities and towns
Cities and towns in Presque Isle County
The Census Bureau estimates 13,128 residents in Presque Isle County for July 1, 2025, 127 more than in 2020 (+1.0%). That works out to 20 people per square mile of land. Its largest town, Rogers City, has 2,869 residents, 21.9% of the total. Together its 4 incorporated places hold 32.4% of those residents; the other 67.6% live outside any of them. Testing is reported here more often than across the state: CDC's 509 reported tests for 2008 to 2017 come to 38.8 for every 1,000 residents (2025 estimate), against 11.3 for Michigan.
From Rogers City to Millersburg, CDC publishes no figure by town: each reads Presque Isle County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Rogers City | 2,869 | +0.7% | 21.9% |
| Onaway | 907 | +0.9% | 6.9% |
| Posen | 270 | +0.7% | 2.1% |
| Millersburg | 204 | Level | 1.6% |
4 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).
Presque Isle County, Homes
Homes in Presque Isle County
Presque Isle County is a place of houses on their own lots: 90% of its 9,856 homes are detached single-family houses, against 72% across Michigan. Half of its homes were built before 1972, close to Michigan's 1972: 34% date from before 1960 and 14% from 2000 or later. Owners live in 90% of the occupied homes (Michigan: 73%), so for most households a test and a fix are their own to order.
| Homes | Presque Isle County | Michigan |
|---|---|---|
| Housing units | 9,856 | 4,599,683 |
| Detached houses | 90% | 72% |
| In buildings of 5 or more | 2% | 13% |
| Mobile homes | 5% | 5% |
| Built before 1960 | 34% | 36% |
| Built since 2000 | 14% | 15% |
| Middle year built | 1972 | 1972 |
| Owner-occupied | 90% | 73% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.