254
Covers Texas
In service since 1997
Split from area code 817
City facts
Killeen area code
Area code for Texas: history, overlays and how to dial.
254
Killeen uses area code 254.
About area code 254
How to call a number in Killeen
Inside the US
1 (254) 555-0123Dial 1, the area code, then the seven-digit number.Local call
555-0123Many areas now require the area code for local calls too; if a seven-digit call fails, add it.From outside the US
+1 254 555 0123Use your country's exit code or +, then 1 for the US.Killeen is on Central Time (CT); check the time before calling from another zone.
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 512 | Georgetown | 30 mi |
| 737 | Georgetown | 30 mi |
Killeen quick facts
Killeen was established in 1872.
Established1872
CountyBell CountyTexas
Area code254Population156,144Census ACS estimateZIP codes476541, 76542, 76543…Elevation863 ft263 m
Time zoneCentral TimeCT
Dates, namesake and elevation from Wikipedia: Killeen, Texas and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Killeen?
Killeen uses area code 254.
When did area code 254 start?
Area code 254 dates from 1997, when it was split from area code 817.
What time zone is area code 254 in?
Killeen is on Central Time (CT).
Sources: Area code 254 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.