Hazleton is a city in Luzerne County, Pennsylvania, United States. The population was 29,963 at the 2020 census. Hazleton is the second-most populous city in Luzerne County. It was incorporated as a borough on January 5, 1857, and as a city on December 4, 1891. Hazleton is located in Northeastern Pennsylvania, 35 miles northwest of Allentown, 82 miles north-northwest of Philadelphia and 106 miles west of New York City.