The borough of Danielson and the town of Killingly are home to a small but significant Laotian community. Both Danielson and Killingly are on the nation's list of top 50 cities with the highest percentage of citizens claiming Laotian ancestry. According to the United States Census Bureau, the borough has a total area of 1.2 square miles (3.1km2), of which 1.1 square miles (2.8km2) is land and 0.1 square miles (0.26km2) (9.02%) is water. Danielson is a borough in the town of Killingly in Windham County, Connecticut. The population was 4,265 at the 2000 census.