According to the United States Census Bureau, the city has a total area of 2.0square miles (5.2Square kilometers), all of it land. In 2004, the city annexed the Arroyo Alto CDP, increasing the population of the city by roughly 300 people. La Feria is a city in Cameron County, Texas, United States. The population was 7,302 at the 2010 census. It is part of the BrownsvilleHarlingen Metropolitan Statistical Area.