Township, Boone County, Illinois
Radon Testing in Bonus Township, IL
Updated
IEMA does not have enough recorded radon tests in Bonus Township to break out separately yet. Boone County, Illinois as a whole sits in the EPA's Radon Zone 1, its highest-potential category, so testing is worth doing regardless.
Bonus Township sits in northern Boone County and is in Belvidere Community Unit School District 100. It has an estimated 4,363 residents and 1,404 housing units across 35.6 square miles.
The ground under Bonus Township
Boone County sits just east of Winnebago County on the same Rock River valley bedrock, dolomite and limestone from the Ordovician and Silurian periods under a layer of Ice Age glacial till. The EPA places Boone County in Radon Zone 1 as well, its highest-potential category.
Housing in Bonus Township
Bonus Township has an estimated population of 4,363 and 1,404 housing units across 35.6 square miles. Density comes out to about 123 people per square mile, more settled than the county's most rural townships. The Census Bureau doesn't separately publish a detailed housing-age or tenure breakdown at this population size, so Boone County's own numbers, on the other Boone County pages on this site, are the closest real context for Bonus Township specifically, not a figure unique to it.
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates (via Census Reporter) and 2024 TIGER/Line county subdivision and place boundaries.
What we do in Bonus Township
Radon testing, Buying or selling a home, and New construction.
Common questions
Is radon a problem in Bonus Township?
Boone County sits in EPA Radon Zone 1, the highest-potential category, so yes, testing is worth doing regardless of the specific house.
We're closing on a house in Bonus Township soon. Is there time to test?
In most cases, yes. Scheduled early in the inspection period, a short-term test (a few days to about a week) has time to come back before you need to decide anything. Details on our <a href="/real-estate-radon-testing">real estate radon testing</a> page.
Nearby
Belvidere (47.9% of tests at 4+ pCi/L), Poplar Grove (58.1% of tests at 4+ pCi/L), Caledonia (47.7% of tests at 4+ pCi/L).
Need radon testing booked in Bonus Township?
Tell us why you're testing and any deadline you're working against. You get a fixed price and a straight answer back.