Area codes & overlays
Why several codes can serve the same neighborhood.
50 states + Washington, DC
A local number.
A place to start.
Look up a state's area codes before you choose a number. Find the region it serves, check the time zone, and understand how incoming calls reach you.
Browse the state directory ↓Anatomy of a US number
+1 212 555 0100
+1
Country code212
Area code555 0100
Local number
Country code212
Area code555 0100
Local number
Illustrative format. Not a contact number.
The state directory
Geographic codes · Reference checked October 2026
A
Alabama7 codes ↗Alaska1 code ↗Arizona5 codes ↗Arkansas4 codes ↗C
California41 codes ↗Colorado6 codes ↗Connecticut4 codes ↗D
Delaware1 code ↗District of Columbia2 codes ↗F
Florida23 codes ↗G
Georgia10 codes ↗H
Hawaii1 code ↗I
Idaho2 codes ↗Illinois17 codes ↗Indiana8 codes ↗Iowa5 codes ↗K
Kansas4 codes ↗Kentucky5 codes ↗L
Louisiana6 codes ↗M
Maine1 code ↗Maryland6 codes ↗Massachusetts9 codes ↗Michigan13 codes ↗Minnesota8 codes ↗Mississippi5 codes ↗Missouri9 codes ↗Montana1 code ↗N
Nebraska3 codes ↗Nevada3 codes ↗New Hampshire1 code ↗New Jersey10 codes ↗New Mexico2 codes ↗New York23 codes ↗North Carolina10 codes ↗North Dakota1 code ↗O
Ohio15 codes ↗Oklahoma5 codes ↗Oregon4 codes ↗P
Pennsylvania15 codes ↗R
Rhode Island1 code ↗S
South Carolina6 codes ↗South Dakota1 code ↗T
Tennessee8 codes ↗Texas29 codes ↗U
Utah3 codes ↗V
Vermont1 code ↗Virginia10 codes ↗W
Washington6 codes ↗West Virginia2 codes ↗Wisconsin8 codes ↗Wyoming1 code ↗Before the first call
All calling guides →Local or toll-free?
Match the number to the people who will call it.
Call forwarding, explained
Follow a call from its US number to the answering phone.
A US number from abroad
What to check before choosing an inbound service.
Ten-digit dialing
The area code is part of the number, even next door.
Coverage and historical dates are adapted from the North American area-code reference. Planned codes are excluded from this dated directory. See methodology and limitations.