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IECC 2021 · PNNL

Georgia climate zones

Georgia’s 159 counties fall in 2 IECC 2021 climate zones: 2A (41), 3A (118).

Zone 2A: hot-humid

Attic target R49 (ENERGY STAR)

Appling County (Hot-humid) · Atkinson County (Hot-humid) · Bacon County (Hot-humid) · Baker County (Hot-humid) · Berrien County (Hot-humid) · Brantley County (Hot-humid) · Brooks County (Hot-humid) · Bryan County (Hot-humid) · Calhoun County (Hot-humid) · Camden County (Hot-humid) · Charlton County (Hot-humid) · Chatham County (Hot-humid) · Clinch County (Hot-humid) · Coffee County (Hot-humid) · Colquitt County (Hot-humid) · Cook County (Hot-humid) · Decatur County (Hot-humid) · Dougherty County (Hot-humid) · Early County (Hot-humid) · Echols County (Hot-humid) · Effingham County (Hot-humid) · Evans County (Hot-humid) · Glynn County (Hot-humid) · Grady County (Hot-humid) · Jeff Davis County (Hot-humid) · Lanier County (Hot-humid) · Liberty County (Hot-humid) · Long County (Hot-humid) · Lowndes County (Hot-humid) · McIntosh County (Hot-humid) · Miller County (Hot-humid) · Mitchell County (Hot-humid) · Pierce County (Hot-humid) · Seminole County (Hot-humid) · Tattnall County (Hot-humid) · Thomas County (Hot-humid) · Tift County (Hot-humid) · Toombs County (Hot-humid) · Ware County (Hot-humid) · Wayne County (Hot-humid) · Worth County (Hot-humid)

Zone 3A: warm-humid

Attic target R49 (ENERGY STAR)

Baldwin County (Mixed-humid) · Banks County (Mixed-humid) · Barrow County (Mixed-humid) · Bartow County (Mixed-humid) · Ben Hill County (Hot-humid) · Bibb County (Mixed-humid) · Bleckley County (Hot-humid) · Bulloch County (Hot-humid) · Burke County (Mixed-humid) · Butts County (Mixed-humid) · Candler County (Hot-humid) · Carroll County (Mixed-humid) · Catoosa County (Mixed-humid) · Chattahoochee County (Hot-humid) · Chattooga County (Mixed-humid) · Cherokee County (Mixed-humid) · Clarke County (Mixed-humid) · Clay County (Hot-humid) · Clayton County (Mixed-humid) · Cobb County (Mixed-humid) · Columbia County (Mixed-humid) · Coweta County (Mixed-humid) · Crawford County (Mixed-humid) · Crisp County (Hot-humid) · Dade County (Mixed-humid) · Dawson County (Mixed-humid) · DeKalb County (Mixed-humid) · Dodge County (Hot-humid) · Dooly County (Hot-humid) · Douglas County (Mixed-humid) · Elbert County (Mixed-humid) · Emanuel County (Hot-humid) · Fannin County (Mixed-humid) · Fayette County (Mixed-humid) · Floyd County (Mixed-humid) · Forsyth County (Mixed-humid) · Franklin County (Mixed-humid) · Fulton County (Mixed-humid) · Gilmer County (Mixed-humid) · Glascock County (Mixed-humid) · Gordon County (Mixed-humid) · Greene County (Mixed-humid) · Gwinnett County (Mixed-humid) · Habersham County (Mixed-humid) · Hall County (Mixed-humid) · Hancock County (Mixed-humid) · Haralson County (Mixed-humid) · Harris County (Mixed-humid) · Hart County (Mixed-humid) · Heard County (Mixed-humid) · Henry County (Mixed-humid) · Houston County (Hot-humid) · Irwin County (Hot-humid) · Jackson County (Mixed-humid) · Jasper County (Mixed-humid) · Jefferson County (Mixed-humid) · Jenkins County (Hot-humid) · Johnson County (Hot-humid) · Jones County (Mixed-humid) · Lamar County (Mixed-humid) · Laurens County (Hot-humid) · Lee County (Hot-humid) · Lincoln County (Mixed-humid) · Lumpkin County (Mixed-humid) · Macon County (Hot-humid) · Madison County (Mixed-humid) · Marion County (Hot-humid) · McDuffie County (Mixed-humid) · Meriwether County (Mixed-humid) · Monroe County (Mixed-humid) · Montgomery County (Hot-humid) · Morgan County (Mixed-humid) · Murray County (Mixed-humid) · Muscogee County (Mixed-humid) · Newton County (Mixed-humid) · Oconee County (Mixed-humid) · Oglethorpe County (Mixed-humid) · Paulding County (Mixed-humid) · Peach County (Hot-humid) · Pickens County (Mixed-humid) · Pike County (Mixed-humid) · Polk County (Mixed-humid) · Pulaski County (Hot-humid) · Putnam County (Mixed-humid) · Quitman County (Hot-humid) · Rabun County (Mixed-humid) · Randolph County (Hot-humid) · Richmond County (Mixed-humid) · Rockdale County (Mixed-humid) · Schley County (Hot-humid) · Screven County (Hot-humid) · Spalding County (Mixed-humid) · Stephens County (Mixed-humid) · Stewart County (Hot-humid) · Sumter County (Hot-humid) · Talbot County (Mixed-humid) · Taliaferro County (Mixed-humid) · Taylor County (Hot-humid) · Telfair County (Hot-humid) · Terrell County (Hot-humid) · Towns County (Mixed-humid) · Treutlen County (Hot-humid) · Troup County (Mixed-humid) · Turner County (Hot-humid) · Twiggs County (Hot-humid) · Union County (Mixed-humid) · Upson County (Mixed-humid) · Walker County (Mixed-humid) · Walton County (Mixed-humid) · Warren County (Mixed-humid) · Washington County (Mixed-humid) · Webster County (Hot-humid) · Wheeler County (Hot-humid) · White County (Mixed-humid) · Whitfield County (Mixed-humid) · Wilcox County (Hot-humid) · Wilkes County (Mixed-humid) · Wilkinson County (Mixed-humid)