2. ...
  3. 821 Prefixes

821 Area Code Phone Directory

Phone Prefixes in the 821 Area Code

(821) 2XX (821) 3XX (821) 4XX (821) 5XX (821) 6XX (821) 7XX (821) 8XX (821) 9XX

Information for Area Code 821

State: TX
Largest City in Area: HOUSTON

Where is Area Code 821?

Area code (821) is in the state of TX. Below, are the major cities in the area code (821).

Area Codes Starting with 8

Major Cities in 821

HOUSTON, TX (191)
SALINAS, CA (41)
EVANSVILLE, IN (38)
SPRING, TX (38)
SANTA CRUZ, CA (35)
HUMBLE, TX (29)
KATY, TX (26)
CHICAGO, IL (25)
APO, AE (22)
NEW YORK, NY (22)