Detailed Radon County Statistics


No. = Number of radon tests done in the county, Max = Maximum radon concentration measured in the county
 Min = Minimum radon concentration measured in the county, AM = Arithmetic mean radon concentration
 GM = Geometric mean radon concentration, SD = Standard deviation,
Md = Median radon concentration, Q1 = First quartile radon concentration, Q3 = third quartile radon concentration
All concentrations are in units of pico-Curies of radiation per liter of air ( pCi/l ).

Note: The statistics are based on 458,339 data points

 

COUNTY NAME No. Max Min AM GM SD Md Q1 Q3
ADAMS 248 49.7 0.1 4.0 1.4 7.5 1.4 0.3 3.8
ALLEN 1020 114 0.1 6.2 3.6 8.2 4.1 1.8 7.5
ASHLAND 1835 565.8 0.1 8.9 4.2 23.1 4.4 2.1 8.3
ASHTABULA 1277 210 0.1 3.9 1.8 9.6 1.7 0.9 3.6
ATHENS 1219 82.1 0.1 4.7 3.1 5.2 3.4 1.7 6.2
AUGLAIZE 691 64.5 0.1 6.7 3.9 6.9 4.6 2 9.1
BELMONT 1837 288.55 0.1 6.9 3.3 15.9 3.1 1.7 6.2
BROWN 246 26 0.1 3.1 1.9 3.5 1.9 0.9 4.2
BUTLER 14619 470 0.1 6.9 3.2 24.8 3.5 1.7 6.6
CARROLL 886 451.9 0.1 13.3 4.9 31.4 4.4 2 10.5
CHAMPAIGN 2243 860 0.1 9.7 4.7 25.3 5.1 2.2 10.8
CLARK 4937 750.1 0.1 7.9 4.3 17.6 4.7 2.3 9.4
CLERMONT 7830 470.8 0.1 4.9 3.1 7.4 3.5 1.7 6.3
CLINTON 774 144 0.1 5.2 3.0 8.3 3.3 1.6 6.0
COLUMBIANA 2159 820 0.1 9.4 4.1 24.1 3.8 1.9 8.0
COSHOCTON 439 259.4 0.1 13.9 5.8 26.1 5.4 2.3 12.8
CRAWFORD 1133 163 0.1 6.6 3.4 11.2 4 1.7 7.6
CUYAHOGA 35126 656.2 0.1 2.9 1.8 6.9 1.9 1 3.4
DARKE 1253 125 0.1 7.1 3.6 9.7 4.2 1.7 8.8
DEFIANCE 574 29.9 0.1 2.9 1.8 3.2 1.7 0.9 3.7
DELAWARE 17396 735 0.1 7.5 4.7 10.8 5.4 2.8 9.5
ERIE 3254 279.2 0.1 7.0 3.7 12.7 3.9 1.875 7.7
FAIRFIELD 5042 481.8 0.1 9.7 5.3 17.2 6.2 2.7 12.0
FAYETTE 198 300 0.1 6.9 3.3 21.8 3.8 1.65 7.5
FRANKLIN 75298 939 0.1 8.6 5.1 11.8 5.7 2.7 10.7
FULTON 505 48.1 0.1 4.2 2.5 4.4 2.9 1.2 5.5
GALLIA 174 23.95 0.1 2.7 1.9 2.8 1.9 1.05 3.5
GEAUGA 3915 733.8 0.1 3.2 2.1 12.9 2.1 1.2 3.5
GREENE 12868 590 0.1 7.0 4.0 10.4 4.3 2.1 8.3
GUERNSEY 459 115.1 0.1 5.9 3.0 10.7 3 1.4 6.4
HAMILTON 33358 316.65 0.1 3.4 2.2 4.6 2.3 1.2 4.2
HANCOCK 2571 130 0.1 5.1 3.2 6.6 3.3 1.6 6.4
HARDIN 334 57.1 0.1 4.6 2.9 5.6 3.1 1.4 5.8
HARRISON 222 210 0.1 14.7 6.2 25.0 5.1 2.4 15.5
HENRY 227 32.7 0.1 4.3 2.6 4.4 3.1 1.6 5.6
HIGHLAND 270 74.9 0.1 4.9 2.7 6.9 3.2 1.4 6.1
HOCKING 345 238 0.1 9.6 4.3 21.1 4.5 1.9 10.4
HOLMES 393 228 0.1 10.8 5.1 20.7 5 2.3 10.6
HURON 1734 499.6 0.1 10.0 4.5 21.1 4.3 2.1 9.6
JACKSON 188 24.3 0.1 3.5 2.1 3.9 2.15 1.1 4.2
JEFFERSON 833 927.6 0.1 10.8 3.9 46.6 3.6 2 7.4
KNOX 5750 844.2 0.1 23.0 7.1 50.4 6.4 2.5 19.6
LAKE 6666 221.6 0.1 3.8 2.1 7.2 2.2 1.1 4.0
LAWRENCE 227 333.4 0.1 4.5 1.8 22.3 1.8 0.9 3.3
LICKING 16821 1400 0.1 16.3 7.4 32.5 7.4 3.4 17.0
LOGAN 1879 1404 0.1 12.5 6.0 38.4 6.15 2.9 12.8
LORAIN 10051 618.2 0.1 4.8 2.9 8.3 3.2 1.6 5.9
LUCAS 12167 260 0.1 3.8 2.1 5.7 2.2 1 4.5
MADISON 1616 104 0.1 8.1 5.2 9.3 5.5 2.9 9.9
MAHONING 4315 220 0.1 3.4 2.2 7.6 2.3 1.3 3.9
MARION 1359 87.6 0.1 6.8 4.0 7.8 4.4 1.8 8.8
MEDINA 8629 169.3 0.1 4.2 2.9 5.2 3.1 1.8 5.2
MEIGS 92 7.2 0.1 2.2 1.6 1.6 1.85 1 3.2
MERCER 642 56.1 0.1 6.7 4.0 7.7 4.45 2.05 8.4
MIAMI 4869 252 0.1 8.1 4.8 11.4 5.1 2.5 9.8
MONROE 158 39.3 0.1 5.3 3.0 6.6 3.15 1.5 6.1
MONTGOMERY 32565 440.7 0.1 6.0 3.4 9.4 3.6 1.7 7.2
MORGAN 69 33.9 0.1 5.0 3.2 5.5 3.4 2.05 6.2
MORROW 693 77.2 0.1 7.5 4.2 9.6 4.4 2.1 9.1
MUSKINGUM 1924 171.7 0.1 6.4 2.8 14.2 3 1.2 6.4
NOBLE 68 15.2 0.1 3.4 2.1 3.5 2.1 1.1 4.6
OTTAWA 1296 320 0.1 5.2 2.7 12.7 2.9 1.2 6.1
PAULDING 96 13.2 0.1 3.6 2.3 3.3 2.5 1.1 4.5
PERRY 671 365.3 0.1 7.5 2.5 24.4 2.6 0.9 6.0
PICKAWAY 1091 190.5 0.1 11.8 7.2 15.6 7.5 3.8 14.2
PIKE 1089 74.9 0.1 6.5 3.0 8.7 4.2 1.4 8.3
PORTAGE 4643 159.3 0.1 4.1 2.7 5.3 2.7 1.4 5.0
PREBLE 1074 90.3 0.1 6.8 3.7 8.7 3.9 1.7 8.7
PUTNAM 383 52.5 0.1 6.4 4.1 6.6 4.5 2.3 7.5
RICHLAND 4622 370.8 0.1 8.9 4.3 19.8 4.3 2.1 8.6
ROSS 1520 223.4 0.1 10.0 5.0 17.0 5.7 2.3 10.8
SANDUSKY 1221 166.6 0.1 6.7 3.6 11.2 4 1.8 7.3
SCIOTO 443 29.5 0.1 3.4 2.0 4.1 2 1 4.1
SENECA 2581 187.9 0.1 7.5 4.1 10.9 4.6 2.1 8.9
SHELBY 1138 111.1 0.1 7.3 4.5 8.1 5.1 2.4 9.1
STARK 13447 580 0.1 6.7 3.8 12.2 4.1 2 7.8
SUMMIT 24422 908.1 0.1 5.0 2.6 22.8 2.7 1.4 4.9
TRUMBULL 2406 71.7 0.1 3.2 2.1 3.8 2.2 1.2 4.0
TUSCARAWAS 2585 283.1 0.1 9.1 4.8 17.0 5 2.4 9.7
UNION 3191 104 0.1 5.7 3.7 6.3 4.1 2.1 7.1
VAN WERT 150 38.1 0.1 6.6 3.9 6.7 4.5 1.9 9.2
VINTON 35 16.35 0.1 3.0 1.7 3.7 1.7 0.7 3.5
WARREN 15015 219 0.1 4.9 3.2 5.7 3.5 1.7 6.3
WASHINGTON 1115 91.9 0.1 4.6 2.8 6.7 2.8 1.5 5.1
WAYNE 3946 498.4 0.1 9.8 4.5 24.7 4.2 2.2 8.6
WILLIAMS 354 67.8 0.1 4.3 2.0 7.6 1.5 0.9 4.2
WOOD 7256 145.5 0.1 4.5 2.5 5.6 2.9 1.2 5.9
WYANDOT 688 49.16667 0.1 5.7 3.4 7.2 3.5 1.8 6.5
UNKNOWN 813 182.3 0.1 5.4 2.3 10.2 2.8 1.1 6.2

 

 

 

 

                                                                        Page updated January, 2019  

                             (Based on  458,339 radon data points)


 

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