+1 explained
The United States country code, 1, is what you dial before a USA number when you call from abroad. It is also known as the USA dialing code, USA calling code, or USA phone code. In the USA phone number format, +1 comes first, then the area code, such as 212 for New York, then the local number.
- Country code
- +1
- The 001 country code is the same number
- ISO code
- US
- The two-letter code on forms and shipping labels
- Used in
- United States
- Also on +1: Antigua & Barbuda, Anguilla, American Samoa, Barbados, Bermuda, Bahamas, Canada, Dominica, Dominican Republic, Grenada, Guam, Jamaica, St. Kitts & Nevis, Cayman Islands, St. Lucia, Northern Mariana Islands, Montserrat, Puerto Rico, Sint Maarten, Turks & Caicos Islands, Trinidad & Tobago, St. Vincent & Grenadines, British Virgin Islands, and U.S. Virgin Islands
- Exit code
- 00
- From most countries. Also 011 from Canada, 0 from United Kingdom, 0011 from Australia, and + from any mobile
- Trunk prefix
- None
- Keep every digit after +1
- Number length
- 10 digits
- After +1
- USA time now
- USA mobile number format
- (201) 555-0123
- From abroad: +1 201 555 0123
- USA landline number format
- (212) 555-0100
- From abroad: +1 212 555 0100
+1 area codes of main cities
Each +1 area code below is in the form you dial from abroad: +1, then the city code, then the local number. Inside the United States, callers leave out +1 and dial the rest as it is. So New York is +1 212 from abroad and 212 at home.
- New York
- +1 212
- Los Angeles
- +1 213
- Chicago
- +1 312
- Houston
- +1 713
- Phoenix
- +1 602
- Philadelphia
- +1 215
- San Antonio
- +1 210
- San Diego
- +1 619
- Dallas
- +1 214
USA phone number types
The first digits of a USA number tell you what kind of number it is: a landline, a mobile, a free number, or one that costs more to call. Here is a sample of each type of USA phone number, as dialed inside the United States and from abroad.
Good to know before you call the United States
“Hello?”
Said as a question when you pick up. Americans say it more on the phone than in everyday talk
Reply
“Hello”
Emergency number
911
911 reaches police, fire, and ambulance. Some cities also use 311 for calls that are not emergencies.
FCCThe mainland United States spans four time zones, from Eastern to Pacific. Arizona and Hawaii keep the same time all year, since neither uses daylight saving time.
Wikipedia, Time in the United StatesThe first 911 call was made in Haleyville, Alabama, on 16 February 1968. Congress made 911 the universal emergency number only in 1999.
FCCNumbers with the exchange 555 and the last four digits 0100 to 0199 never ring anyone. The numbering plan keeps them free for films and TV shows.
NANPAAT&T divided North America into just 86 area codes in 1947. New Jersey's 201 went live first, in 1951, for the first long-distance call without an operator.
Wikipedia, Telephone numbers in the United States
What it costs to call the United States (using Suparelay)
Landline from $0.04/min
No country of 220 costs less to call than the United States.
Enter a numberEach bar counts the countries at that price
Want to call the United States?
Call any phone from this tab. Nothing to install on either side, and you pay cents a minute.
Why a call to the United States fails
You call from: 🇬🇧 United Kingdom
00 does not work from every country
The + stands for your own exit code, and it is not always 00. From Canada and the other +1 countries, dial 1, then the area code and number, with no exit code at all. From Mexico or any other country outside the +1 group, dial your own exit code before the 1.
- Connects
- 0 1 212 555 0100
- Does not connect
- 00 1 212 555 0100
The number does not take calls from abroad
Numbers that start with 800, 888, 877, 866, 855, 844, or 833 are free to call only on the +1 numbering plan. From anywhere else, most do not connect.
- Connects
- 0 1 212 555 0100
- Does not connect
- 0 1 800 234 5678
Questions about +1
Which country is +1?
+1 belongs to the United States and 24 other countries and territories on the same numbering plan, including Canada, Puerto Rico, and Jamaica.
What is +1?
+1 is the country code for the United States, dialed before the area code when you call from abroad. It is the same digit as the 1 you dial for a USA long-distance call.
Is every +1 number in the United States?
No. Area codes such as 809 in the Dominican Republic and 876 in Jamaica also start with +1. The FCC warns about one-ring calls from them, so do not call back a number you do not know.
What is +1 also called?
+1 is the usa country code. People also search united states dialing code, united states calling code, united states phone code, and united states phone number format for the same +1.
What is the difference between +1 and 001?
The + stands for your own exit code. 00 works as an exit code from most of the world, so 001 and +1 reach the same number. From Canada or another country on +1, dial 1 and the number with no exit code. From Mexico, dial 00 1.
Can I text a +1 number?
Yes, if it is a mobile. Write the number as +1 with the area code. Nothing in a US number shows if it is a landline, and a landline cannot receive a text. Outside the +1 countries, your phone sends it at your carrier's international rate.
How much does it cost to call the United States?
The dialer on this page shows the exact price of the number you enter before you call.
Why do USA phone numbers start with 1?
They do not. 1 is the country code, dialed before the area code, not part of the number itself. It is the same digit used for a long-distance call inside the country.
What time is it in the USA?
It depends on the state. The mainland has 4 time zones, from Eastern to Pacific, and the clock on this page shows New York time. Arizona and Hawaii do not change their clocks in summer.
The information on this page is accurate as of September 25, 2026.
NANPA, the North American Numbering Plan Administrator