Question 1

Where is area code 720?

Accepted Answer

Area code 720 covers Denver and nearby cities including Aurora, Lakewood, Thornton in Colorado, in the Mountain Time.

Question 2

What cities use area code 720?

Accepted Answer

Area code 720 serves Denver, Aurora, Lakewood, Thornton, Arvada, and 19 other communities in Colorado.

Question 3

What time zone is area code 720 in?

Accepted Answer

Area code 720 is in the Mountain Time (America/Denver).

Question 4

How do you dial a 720 number?

Accepted Answer

Dial all 10 digits: 720 followed by the 7-digit local number. From outside the United States, dial +1 720 and the local number.

Question 5

Is a call from area code 720 a scam?

Accepted Answer

A 720 number is geographically tied to Colorado, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.

Question 6

Is 720 a country code?

Accepted Answer

No. 720 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1. So a full 720 number written for international dialing looks like +1 720 followed by the 7-digit local number.

Area Code 720

Cities in area code 720

Area codes by city

Carriers in area code 720

Other Colorado area codes

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