Edinburg (/ ˈ ɛ d ɪ n b ɜːr ɡ / ED-in-burg) is a city in and the county seat of Hidalgo County, Texas, United States. [6] The population was 100,243 at the 2020 census , [ 3 ] and in 2022, its estimated population was 104,294, [ 4 ] making it the second-largest city in Hidalgo County, and the third-largest city in the larger Rio Grande ...