Attic Insulation Cost by State (2026)

The national average for attic insulation is $2,500. Costs vary significantly by state. Select your state below.

Most Affordable States

Mississippi$1,949South Dakota$1,980Kentucky$1,989South Carolina$2,020Wyoming$2,026

Most Expensive States

Hawaii$3,732New York$3,512Alaska$3,243New Jersey$3,130Oregon$2,954

All 50 States

Mississippi$1,949South Dakota$1,980Kentucky$1,989South Carolina$2,020Wyoming$2,026Iowa$2,034Louisiana$2,068Montana$2,074West Virginia$2,137Alabama$2,143Wisconsin$2,177Nebraska$2,192Tennessee$2,194North Carolina$2,201Missouri$2,213Maine$2,245Arkansas$2,276Ohio$2,278Oklahoma$2,321Michigan$2,335Kansas$2,348Florida$2,363Idaho$2,363Texas$2,377Georgia$2,446Indiana$2,458Virginia$2,458North Dakota$2,487New Mexico$2,508Vermont$2,559Rhode Island$2,581New Hampshire$2,604Arizona$2,628Illinois$2,659Connecticut$2,673Utah$2,709Minnesota$2,731Delaware$2,739Washington$2,743Massachusetts$2,756Maryland$2,819Colorado$2,826California$2,892Nevada$2,901Pennsylvania$2,935Oregon$2,954New Jersey$3,130Alaska$3,243New York$3,512Hawaii$3,732