Area Code 210 History:
Area code 210 was put into service on 11/01/1992. Area code 210 was created from a split of area code 512. In 1997 area code 210 was split to form area codes 830 and 956.
Counties in Texas within area code 210 include:
Atascosa County and Bexar County.
Major cities or places in Texas within area code 210 include:
Area code 210 serves many communities within the San Antonio metro area including Austin, Dallas, El Paso, Houston, and San Antonio