A choropleth map of the United States showing the estimated share of households without any form of air conditioning, by county, in 2023. Overall, 6.9% of households in the U.S. lacked AC. Rates were much higher in Alaska, Hawaii, the west, and Appalachia. The county in the contiguous U.S. with the highest share without AC was San Francisco County in California, at 65.4%. The county with the highest number of households without AC was Los Angeles County, at 702 thousand.