Everything You Need to Know About 303
So you got a call from a 303 number and you're wondering where it came from? That's Colorado. More specifically, 303 covers Denver and places like Aurora.
This area code has been around for 78 years now - it was created in 1947. That makes it one of the original area codes from when the phone system was first being organized.
Quick Tip
People in the 303 area are on Mountain Time (MT). If you're in a different time zone, double-check before calling so you don't reach them at an awkward hour.
Here's Something Worth Knowing
Just because you see 303 on your caller ID doesn't guarantee the person is actually sitting in Colorado right now. Since 2003, people can take their phone numbers with them when they move. Your old college roommate who grew up near Denver? They might be living in Texas now but still using their 303 number.
That said, a 303 number usually means the person originally got their phone number somewhere in Colorado. Or they specifically chose a 303 number for business reasons - maybe to seem local to customers in the Denver area.
How to Dial a 303 Number
If you're calling from somewhere else in the country, just dial 1 + 303 + the 7-digit number. Calling from overseas? Use your country's exit code (usually 00 or +), then 1 for the US, then 303 and the rest.
Should You Be Worried About Scams?
Here's the honest truth: scammers can fake any area code they want, including 303. It's called "spoofing" and it's frustratingly common. So if you get a call from 303that feels off - someone asking for your Social Security number, claiming you won a prize, or demanding immediate payment for something - trust your gut and hang up.
Real businesses and government agencies don't cold call asking for sensitive info. If you're unsure whether a call was legit, look up the company's official number yourself and call them back.
Cities and Towns Using 303
The 303 area code serves quite a few places across Colorado. Here's where you might find someone with this area code: