661
Covers central and southern California
In service since 1999
City facts
Lancaster area code
Area code for central and southern California: history, overlays and how to dial.
661
Lancaster uses area code 661.
About area code 661
How to call a number in Lancaster
Inside the US
1 (661) 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
+1 661 555 0123Use your country's exit code or +, then 1 for the US.Lancaster is on Pacific Time (PT); check the time before calling from another zone.
Other cities that share 661
Nearby area codes
| Area code | Used in | Distance |
|---|---|---|
| 626 | Alhambra | 41 mi |
| 323 | Alhambra | 41 mi |
| 213 | Echo Park | 42 mi |
| 310 | West Hollywood | 43 mi |
| 424 | West Hollywood | 43 mi |
| 805 | Simi Valley | 44 mi |
| 820 | Simi Valley | 44 mi |
| 909 | West Covina | 44 mi |
Lancaster quick facts
Lancaster was incorporated on November 22, 1977.
Incorporated1977November 22, 1977
CountyLos Angeles CountyCalifornia
Area code661Population170,013Census ACS estimateZIP codes393534, 93535, 93536Elevation2,359 ft719 m
Time zonePacific TimePT
Dates, namesake and elevation from Wikipedia: Lancaster, California and Wikidata (checked 2026-11-08); population and ZIP codes from the U.S. Census Bureau.
Questions
What area code is Lancaster?
Lancaster uses area code 661.
When did area code 661 start?
Area code 661 dates from 1999.
What time zone is area code 661 in?
Lancaster is on Pacific Time (PT).
What other cities use area code 661?
Other cities in this network that share 661 include Palmdale.
Sources: Area code 661 (Wikipedia) and Wikidata, checked 2026-11-08. Numbering plans change; the North American Numbering Plan Administrator is the official record.