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State overview

Radon in Mississippi

Of Mississippi's 82 counties and county equivalents, EPA places 8 in Zone 2, 74 in Zone 3. Zones are county-wide predictions; testing is the only way to know your home's level.

All 82 counties

CountyEPA zone
Adams CountyZone 3
Alcorn CountyZone 2
Amite CountyZone 3
Attala CountyZone 3
Benton CountyZone 3
Bolivar CountyZone 3
Calhoun CountyZone 3
Carroll CountyZone 3
Chickasaw CountyZone 2
Choctaw CountyZone 3
Claiborne CountyZone 3
Clarke CountyZone 3
Clay CountyZone 2
Coahoma CountyZone 3
Copiah CountyZone 3
Covington CountyZone 3
DeSoto CountyZone 3
Forrest CountyZone 3
Franklin CountyZone 3
George CountyZone 3
Greene CountyZone 3
Grenada CountyZone 3
Hancock CountyZone 3
Harrison CountyZone 3
Hinds CountyZone 3
Holmes CountyZone 3
Humphreys CountyZone 3
Issaquena CountyZone 3
Itawamba CountyZone 3
Jackson CountyZone 3
Jasper CountyZone 3
Jefferson CountyZone 3
Jefferson Davis CountyZone 3
Jones CountyZone 3
Kemper CountyZone 3
Lafayette CountyZone 3
Lamar CountyZone 3
Lauderdale CountyZone 3
Lawrence CountyZone 3
Leake CountyZone 3
Lee CountyZone 2
Leflore CountyZone 3
Lincoln CountyZone 3
Lowndes CountyZone 2
Madison CountyZone 3
Marion CountyZone 3
Marshall CountyZone 3
Monroe CountyZone 3
Montgomery CountyZone 3
Neshoba CountyZone 3
Newton CountyZone 3
Noxubee CountyZone 2
Oktibbeha CountyZone 3
Panola CountyZone 3
Pearl River CountyZone 3
Perry CountyZone 3
Pike CountyZone 3
Pontotoc CountyZone 2
Prentiss CountyZone 3
Quitman CountyZone 3
Rankin CountyZone 3
Scott CountyZone 3
Sharkey CountyZone 3
Simpson CountyZone 3
Smith CountyZone 3
Stone CountyZone 3
Sunflower CountyZone 3
Tallahatchie CountyZone 3
Tate CountyZone 3
Tippah CountyZone 3
Tishomingo CountyZone 3
Tunica CountyZone 3
Union CountyZone 2
Walthall CountyZone 3
Warren CountyZone 3
Washington CountyZone 3
Wayne CountyZone 3
Webster CountyZone 3
Wilkinson CountyZone 3
Winston CountyZone 3
Yalobusha CountyZone 3
Yazoo CountyZone 3

Source: EPA radon zones spreadsheet (EPA 402/A-16/001).