Area codes in Killeen, Texas
Killeen, Texas uses area code 254. The main Killeen area code is 254.
Area codes serving Killeen
All Texas area codes · Is a Killeen call a scam?
Nearby cities
- Georgetown area codes
- Round Rock area codes
- Waco area codes
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- Waxahachie area codes
- Mansfield area codes
- Seguin area codes
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of June 20, 2026. Refreshed monthly.