United States Area Codes
Complete directory of telephone area codes and city codes for United States
+1
Country Code
15
Area Codes Listed
1
Trunk Prefix
North America
Region
United States Phone Number Format
International Format
+1 (XXX) XXX-XXXX
Example: +1 212 XXXX XXXX
Dialing Notes
- ✓Country code: +1
- ✓Trunk prefix for domestic calls: 1
- ✓Drop trunk prefix when calling internationally
United States City Area Codes
| Area Code | City/Region | State/Province | Full Dial Format |
|---|---|---|---|
| 212 | New York City | New York | +1 212 XXXX XXXX |
| 310 | Los Angeles | California | +1 310 XXXX XXXX |
| 312 | Chicago | Illinois | +1 312 XXXX XXXX |
| 415 | San Francisco | California | +1 415 XXXX XXXX |
| 202 | Washington D.C. | District of Columbia | +1 202 XXXX XXXX |
| 305 | Miami | Florida | +1 305 XXXX XXXX |
| 713 | Houston | Texas | +1 713 XXXX XXXX |
| 214 | Dallas | Texas | +1 214 XXXX XXXX |
| 404 | Atlanta | Georgia | +1 404 XXXX XXXX |
| 617 | Boston | Massachusetts | +1 617 XXXX XXXX |
| 206 | Seattle | Washington | +1 206 XXXX XXXX |
| 303 | Denver | Colorado | +1 303 XXXX XXXX |
| 602 | Phoenix | Arizona | +1 602 XXXX XXXX |
| 702 | Las Vegas | Nevada | +1 702 XXXX XXXX |
| 503 | Portland | Oregon | +1 503 XXXX XXXX |
How to Dial United States
From Outside United States
- Dial your exit code (011 from USA, 00 from Europe)
- Enter United States's country code: 1
- Add the area code (drop leading 0 if present)
- Dial the local phone number
Within United States
- Dial the trunk prefix: 1
- Add the area code
- Dial the local number
Frequently Asked Questions
What is the country code for United States?
The international country code for United States is +1 (or 1 without the plus sign).
How do I dial an area code in United States?
For domestic calls within United States, dial 1 followed by the area code and local number. For international calls, dial your exit code + 1 + area code + number.
Do I need to dial the area code for local calls in United States?
In most countries including United States, you need to dial the area code even for local calls. Some regions may allow local dialing without the area code, but including it always works.
What is the phone number format for United States?
The standard phone number format for United States is: +1 (XXX) XXX-XXXX