Iglesia Antigua is a census-designated place (CDP) in Cameron County, in the U.S. state of Texas. As of the 2020 census, Iglesia Antigua had a population of 415. Prior to the 2010 census, the community was part of the Bluetown-Iglesia Antigua CDP. It is part of the Brownsville–Harlingen Metropolitan Statistical Area.
Iglesia Antigua is in southwestern Cameron County, bordered to the east by Bluetown. To the west is Santa Maria, and to the south is the Rio Grande, which forms the MexicoâÂÂUnited States border. U.S. Route 281 passes through the community, leading southeast to Brownsville and west to Hidalgo.
According to the United States Census Bureau, the Iglesia Antigua CDP has a total area of , of which is land and , or 3.96%, is water.
Iglesia Antigua first appeared as a census designated place in the 2010 U.S. census after the Bluetown-Iglesia Antigua CDP was split into the Bluetown and Bluetown CDPs.