Area Code 909 at a Glance
| Area code | 909 |
| Region | California |
| Country | United States |
| Primary timezone | America/Los_Angeles |
| Dialing format | +1 (909) NXX-XXXX |
Cities and Places Using Area Code 909
Based on prefix-level carrier data, area code 909 covers places including:
- Rancho Cucamonga, CA
- Ontario, CA
- Fontana, CA
- Chino, CA
- Upland, CA
- Pomona, CA
- Redlands, CA
- Walnut, CA
- San Bernardino, CA
- Rialto, CA
- Diamond Bar, CA
- San Dimas, CA
Frequently Asked Questions
Where is area code 909?
Area code 909 serves California, United States.
Who is calling me from area code 909?
A call from area code 909 most likely originates from California, but caller ID can be spoofed. If an unknown caller asks for personal or payment information, hang up and call the organization back on its official number.
How do I dial a 909 number?
Within North America: dial 1-909 followed by the 7-digit number. From abroad: your international prefix (like 00 or +), then 1 909 and the number.