San Juan is a city in Hidalgo County, Texas. The community is in the valley of the Rio Grande and is part of the McAllen–Edinburg–Mission Metropolitan Statistical Area. The City of San Juan is well-known as “Basilica of Our Lady of San Juan” which is one of the biggest churches in the Rio Grande Valley. Almost all of San Juan is a part of the Pharr-San Juan-Alamo Independent School District.