Hidalgo County is a county in the U.S. state of Texas. As of the 2010 census, the population was 774,769, making it the eighth-most populous county in Texas. The county seatis Edinburg, while the largest city is McAllen. The county is named for Miguel Hidalgo y Costilla, the priest who raised the call for Mexico’s independence from Spain.
Hidalgo County is also designated by the U.S. Census Bureau as the McAllen-Edinburg-Mission Metropolitan Statistical Area. It is located in the Rio Grande Valley of South Texasand is one of the fastest-growing counties in the United States.