4xx area codes

44 listed US area codes in the 400 series. Choose a code to explore its city, time zone, and phone lookup.

Area codes by state

Alabama

1 code

Arizona

1 code

Arkansas

1 code

California

4 codes

Connecticut

1 code

Florida

2 codes

Georgia

3 codes

Illinois

2 codes

Indiana

1 code

Louisiana

1 code

Maryland

2 codes

Massachusetts

1 code

Mississippi

1 code

Missouri

1 code

Montana

1 code

Nebraska

1 code

New York

1 code

North Carolina

1 code

Ohio

3 codes

Oklahoma

1 code

Oregon

1 code

Pennsylvania

3 codes

Rhode Island

1 code

Tennessee

1 code

Texas

4 codes

Utah

1 code

Virginia

1 code

Washington

1 code

Wisconsin

1 code

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