What county is el paso in tx? El Paso County is included in the El Paso metropolitan area. Along with Hudspeth County, it is one of only two counties in Texas in the Mountain Time Zone (all other Texas counties use Central Time).What city is el paso in? El Paso is a city in the U.S. state of Texas (near Ciudad Juarez, Chihuahua, Mexico). It is in El Paso County and is the county seat (the city where the county is governed).What is the address of el paso? El Paso Operation Center. P.O. Box 982600. El Paso, TX 79998. Overnight Mailing Address. Charles Schwab & Co., Inc.What is the area of el paso county? El Paso county is located in west Texas. El Paso county has 1,012.69 square miles of land area and 2.27 square miles of water area.