Healy is a census-designated place (CDP) in the borough seat of Denali Borough in the U.S. state of Alaska. The population was 1,021 at the 2010 census, up from 1,000 in 2000.
The history of Healy is intertwined with that of coal mining and construction of the Alaska Railroad, which both began in the area in 1918 and 1919 respectively.
Healy was originally named Healy Fork after the Healy River. The Healy River was named after Capt. John J. Healy, manager of the North American Trading and Transportation Company.
Healy is located at 63°58′15″N 149°7′37″W (63.970833, -149.126944). The George Parks Highway (Alaska Route 3) runs through the community, leading south 18 miles (29 km) to Denali Park and north 56 miles (90 km) to Nenana.
According to the United States Census Bureau, the Healy CDP has a total area of 687.2 square miles (1,779.8 km2), of which 687.0 square miles (1,779.2 km2) is land and 0.19 square miles (0.5 km2), or 0.03%, is water. By area, it is the second-largest CDP in the United States, exceeded by only Willow, Alaska.
As is typical of the Alaska Interior, Healy experiences a subarctic climate (Köppen Dfc) with very long, bitterly cold winters and short, warm summers, and straddles the border between USDA Plant Hardiness Zone 2 and 3, indicating the coldest temperature of the year is typically around −40 °F (−40 °C).