Hidalgo County is located in the U.S. state of Texas. As of the 2025 census estimate, its population was 921,549, making it the ninth-most populous county in Texas, and the most populous county outside of the counties in the Texas Triangle. However, based on housing permits and service usage, county officials believe the true population is around 1.2 million, if "a full and accurate census count is completed." The county seat is Edinburg and 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. It is located in the Rio Grande Valley of South Texas and is one of the fastest-growing counties in the United States.
- Country
- United States
- Inception
- January 24, 1852
- Website
- https://www.hidalgocounty.us/
