Each state, the District of Columbia, and Puerto Rico contain between one and four federal districts, with the number of authorized judgeships in each district varying. Other territories, including Guam, the Virgin Islands, and the Northern Mariana Island, contain district courts as well. Each state also falls within one of the twelve circuits.

ALABAMA: Located in the 11th Circuit, the state is divided into three federal districts: Northern (Birmingham), Middle (Montgomery), and Southern (Mobile).

ALASKA: Located in the 9th Circuit, the state has one federal judicial district, based in Anchorage.

ARKANSAS: Located in the 8th Circuit, the state is divided into two federal districts: Eastern (Little Rock) and Western (Fort Smith).

CALIFORNIA: Located in the 9th Circuit, the state is divided into four districts: Northern (San Francisco), Eastern (Sacramento), Central (Los Angeles), and Southern (San Diego).

COLORADO: Located in the 10th Circuit, the state has one federal judicial district, based in Denver.

CONNECTICUT: Located in the 2nd Circuit, the state has one federal judicial district, based in New Haven.

DELAWARE: Located in the 3rd Circuit, the state has one federal judicial district, based in Wilmington. FLORIDA: Located in the 11th Circuit, the state has three federal judicial districts: Northern (Tallahassee), Middle (Jacksonville), and Southern (Miami).

GEORGIA: Located in the 11th Circuit, the state has three federal judicial districts: Northern (Atlanta), Middle (Macon), and Southern (Savannah).

GUAM: The territory contains a federal district, based in Agana.

HAWAII: Located in the 9th Circuit, the state has one federal district, based in Honolulu.

IDAHO: Located in the 9th Circuit, the state has one federal district, based in Boise.

ILLINOIS: Located in the 7th Circuit, the state has three federal districts: Northern (Chicago), Southern (East Saint Louis), and Central (Springfield).

INDIANA: Located in the 7th Circuit, the state has two federal districts: Northern (South Bend) and Southern (Indianapolis).

IOWA: Located in the 8th Circuit, the state has two federal districts: Northern (Cedar Rapids) and Southern (Des Moines).

KANSAS: Located in the 10th Circuit, the state has one federal district, based in Wichita.

KENTUCKY: Located in the 6th Circuit, the state has two federal districts: Eastern (Lexington) and Western (Louisville).

LOUISIANA: Located in the 5th Circuit, the state has three federal districts: Eastern (New Orleans), Middle (Baton Rouge), and Western (Shreveport).

MAINE: Located in the 1st Circuit, the state has one federal district, based in Portland.

MARYLAND: Located in the 4th Circuit, the state has one federal district, based in Baltimore.

MASSACHUSETTS: Located in the 1st Circuit, the state has one federal district, based in Boston.

MICHIGAN: Located in the 6th Circuit, the state has two federal districts: Eastern (Detroit) and Western (Grand Rapids).

MINNESOTA: Located in the 8th Circuit, the state has one federal district, based in St. Paul.

MISSISSIPPI: Located in the 5th Circuit, the state has two federal districts: Northern (Oxford) and Southern (Jackson).

MISSOURI: Located in the 8th Circuit, the state has two federal districts: Eastern (Saint Louis) and Western (Kansas City).

MONTANA: Located in the 9th Circuit, the state has one federal district, based in Billings.

NEBRASKA: Located in the 8th Circuit, the state has one federal district, based in Omaha.

NEVADA: Located in the 9th Circuit, the state has one federal district, based in Las Vegas.

NEW HAMPSHIRE: Located in the 1st Circuit, the state has one federal district, based in Concord.

NEW JERSEY: Located in the 3rd Circuit, the state has one federal district, based in Newark.

NEW MEXICO: Located in the 10th Circuit, the state has one federal district, based in Albuquerque.

NEW YORK: Located in the 2nd Circuit, the state has four federal districts: Northern (Syracuse), Eastern (Brooklyn), Southern (New York City), and Western (Buffalo).

NORTH CAROLINA: Located in the 4th Circuit, the state has three federal districts: Eastern (Raleigh), Middle (Greensboro), and Western (Asheville).

NORTH DAKOTA: Located in the 8th Circuit, the state has one federal district, based in Bismarck.

NORTH MARINA ISLANDS: The territory contains a federal district, based in Saipan.

OHIO: Located in the 6th Circuit, the state has two federal districts: Northern (Cleveland) and Southern (Columbus).

OKLAHOMA: Located in the 10th Circuit, the state has three federal districts: Northern (Tulsa), Eastern (Muskogee), and Western (Oklahoma City).

OREGON: Located in the 9th Circuit, the state has one federal district, based in Portland.

PENNSYLVANIA: Located in the 3rd Circuit, the state has three federal districts: Eastern (Philadelphia), Middle (Scranton), and Western (Pittsburgh).

PUERTO RICO: The territory contains a federal district, based in Hato Rey.

RHODE ISLAND: Located in the 1st Circuit, the state has one federal district, located in Providence.

SOUTH CAROLINA: Located in the 4th Circuit, the state contains one federal district, located in Columbia.

SOUTH DAKOTA: Located in the 8th Circuit, the state contains one federal district, based in Sioux Falls.

TENNESSEE: Located in the 6th Circuit, the state contains three federal districts: Eastern (Knoxville), Middle (Nashville), and Western (Memphis).

TEXAS: Located in the 5th Circuit, the state contains four federal districts: Northern (Dallas), Southern (Houston), Eastern (Tyler), and Western (San Antonio).

UTAH: Located in the 10th Circuit, the state contains one federal district, based in Salt Lake City.

VERMONT: Located in the 2nd Circuit, the state contains one federal district, based in Burlington.

VIRGIN ISLANDS: The territory contains a federal district, based in Saint Thomas.

VIRGINIA: Located in the 4th Circuit, the state contains two federal districts: Eastern (Alexandria) and Western (Roanoke).

WASHINGTON: Located in the 9th Circuit, the state contains two federal districts: Eastern (Spokane) and Western (Seattle).

WASHINGTON, D.C.: Located in the D. C. Circuit, Washington, D. C., has its own federal district.

WEST VIRGINIA: Located in the 4th Circuit, the state contains two federal districts: Northern (Elkins) and Southern (Charleston).

WISCONSIN: Located in the 7th Circuit, the state contains two federal districts: Eastern (Milwaukee) and Western (Madison).

WYOMING: Located in the 10th Circuit, the state contains one federal district, based in Cheyenne.