3xx area codes

48 listed US area codes in the 300 series. Choose a code to explore its city, time zone, and phone lookup.

Area codes by state

Alabama

1 code

Arkansas

1 code

California

6 codes

Colorado

1 code

Delaware

1 code

Florida

5 codes

Illinois

3 codes

Indiana

1 code

Iowa

1 code

Kansas

1 code

Kentucky

1 code

Louisiana

2 codes

Maryland

1 code

Massachusetts

2 codes

Michigan

1 code

Minnesota

1 code

Missouri

1 code

Nebraska

1 code

New York

5 codes

North Carolina

1 code

Ohio

3 codes

Texas

3 codes

Utah

1 code

Washington

1 code

West Virginia

1 code

Wisconsin

1 code

Wyoming

1 code

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