The 661 area code serves Bakersfield, the Santa Clarita Valley, and the Antelope Valley in California, spanning Kern County and the northern edge of Los Angeles County. Created in 1999, 661 covers a fast-growing region between the Central Valley and the Los Angeles metropolitan area. If a 661 number has appeared on your caller ID, this guide explains where it comes from, how to dial it, and how to stay safe from spoofed calls.
Quick Summary: Area Code 661 at a Glance
| Detail | Information |
|---|---|
| Area Code | 661 |
| State | California (CA) |
| Major Cities | Bakersfield, Santa Clarita, Palmdale, Lancaster |
| Time Zone | Pacific Time (PT) |
| Country Code | +1 (USA) |
| Overlay Codes | None (single area code) |
Geographic Coverage & Major Cities
Area code 661 covers most of Kern County along with the northern portions of Los Angeles County, including the Santa Clarita and Antelope valleys. It bridges the southern Central Valley and the high desert north of Los Angeles.
Cities and communities served by the 661 area code include:
- Bakersfield — the region’s largest city and a major agricultural and energy hub
- Santa Clarita — a large planned city in northern Los Angeles County
- Palmdale and Lancaster — the Antelope Valley’s twin cities
- Delano, Tehachapi, and Ridgecrest — surrounding Kern County communities
Because it covers this broad inland region, a 661 number carries a recognizable identity spanning the southern valley and the high desert.
A Brief History of Area Code 661
Area code 661 was created in 1999, split from 805 as the region’s demand for numbers grew. The split kept 805 for the Central Coast and assigned 661 to Bakersfield and the northern Los Angeles County valleys. To date, 661 has remained a single area code without an overlay, though 10-digit dialing is now standard across California.
Time Zone & Best Time to Call
Numbers in the 661 area code use Pacific Time (PT). The region observes Daylight Saving Time, shifting from PST (UTC−8) to PDT (UTC−7) between March and November each year.
How to Dial Phone Numbers in Area Code 661
Ten-digit dialing is now standard throughout California, so always include the area code.
Calling within the United States or Canada
- 10-digit dialing: Dial the full number — 661-XXX-XXXX.
- 11-digit dialing: You can also dial 1-661-XXX-XXXX; the leading 1 is the NANP country code.
Calling from outside the United States
- Format: [exit code] + 1 + 661 + XXX + XXXX
- From the UK, Europe, or most of Asia/Africa: 00 1 661 XXX XXXX
- From any mobile phone worldwide: +1 661 XXX XXXX
Is Area Code 661 a Scam? Safety & Protection Tips
Area code 661 is a legitimate California area code — a call from it is not fraudulent by default. However, scammers frequently spoof the code, faking the caller ID so their number appears to come from a trusted local line. Neighbor spoofing, which mimics your own number’s first six digits, is especially common.
Common scam tactics linked to this region
| Scam type | What to watch for |
|---|---|
| Government impersonation | Callers posing as the IRS or SSA threatening arrest or fines |
| Utility shut-off threats | Demands for immediate payment to avoid disconnection |
| Auto-warranty robocalls | Recorded warnings that your vehicle warranty is expiring |
| Bank & card fraud alerts | Claims of “suspicious activity” seeking your account details |
How to report, block, and look up 661 callers
- Never share personal or financial details with an unexpected caller, however urgent they sound.
- Block the number using your phone’s built-in call-blocking feature or a reputable call-screening app.
- Look up the number with a trusted reverse phone lookup before returning any call.
- Report it to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby & Related Area Codes in California
Area code 661 borders several other California codes:
- 805 & 820 — the Central Coast, 661’s parent code (see our 805 area code guide)
- 818 & 747 — the San Fernando Valley to the south (see our 818 area code guide)
- 559 — the central San Joaquin Valley (see our 559 area code guide)
- 760 & 442 — the deserts to the east
Explore more codes across the state on our California area codes hub, or browse every prefix in our US area codes directory.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border California:
Frequently Asked Questions About Area Code 661
Where is the 661 area code located?
Area code 661 covers Bakersfield, the Santa Clarita Valley, and the Antelope Valley (Palmdale and Lancaster) in California. It operates on Pacific Time.
Is 661 a landline or cell phone area code?
Both. Area code 661 serves landlines, mobile phones, and VoIP numbers throughout Kern County and northern Los Angeles County.
Does 661 have an overlay area code?
No. 661 remains a single area code without an overlay, though 10-digit dialing is now standard statewide.
Should I answer a call from an unknown 661 number?
If you are not expecting the call, let it go to voicemail. Legitimate callers leave a message, while spoofed or robocall numbers usually will not. Verify any unfamiliar number with a reverse lookup before calling back.
Related 661 Guides
- Is a 661 call safe? Read Is area code 661 a scam? Spam & safety guide.
- Local coverage: see the Bakersfield area code guide.
- Worried about spam or robocalls? Browse our Scam Alerts directory.