San Juan
- County:
- Hidalgo County
- County Seat:
- No
- Area (mi²):
- 12.115
- State:
- Texas
San Juan is a city located in Hidalgo County, Texas. San Juan has a 2026 population of 37,341. San Juan is currently growing at a rate of 1.92% annually and its population has increased by 5.58% since the most recent census, which recorded a population of 35,369 in 2020.