McAllen is the largest city in Hidalgo County, Texas, United States, and the 22nd-most populous city in Texas. It is located at the southern tip of the state in the Rio Grande Valley. The city limits extend south to the Rio Grande, across from the Mexican city of Reynosa. McAllen is about 70 mi (110 km) west of the Gulf of Mexico. As of 2017, McAllen’s population was estimated to be 143,433.
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