This article features a listing of the top-level professional minor league sports teams based in the United States that are typically the second tier of professional sports under the major professional leagues. The minor leagues listed below also include teams outside the United States, with seven in Canada (one in the NBA G League and six in the American Hockey League) and one in Mexico (NBA G League).
Triple-A minor league baseball has two leagues, the International League and Pacific Coast League, both affiliated with Major League Baseball. Basketball and ice hockey each have one affiliated minor league, the NBA G League and American Hockey League, respectively. The USL Championship (USLC) is a Division II league below Major League Soccer as designated by the United States Soccer Federation that governs the various soccer leagues, although some MLS teams are affiliated with clubs from outside the second tier for development purposes. However, most MLS clubs now field their reserve sides in MLS Next Pro, a third-level league that launched in 2022, and the only MLS clubs that are not fielding a Next Pro side in 2025 are CF Montréal, D.C. United, and San Diego FC. There are no affiliated minor leagues for American or Canadian football as most of its recruiting is done through college football, and minor football leagues do not historically have long lifespans before folding,. Currently there is one existing high level spring league: the United Football League, formed from the merger of the USFL and the XFL.
Teams that will join a league for a future season are indicated in italics.
Rank Metropolitan area Triple-A Baseball NBA G League American Hockey League USL Championship United Football League1 New York Long Island NetsWestchester Knicks Brooklyn FC 2 Los Angeles South Bay Lakers Orange County SC 3 Chicago Windy City Bulls Chicago Wolves 4 Dallas–Fort Worth, Texas Texas Legends Arlington Renegades5 Houston, Texas Sugar Land Space Cowboys (PCL) Houston Roughnecks6 Washington, D.C. Capital City Go-Go Loudoun United FC DC Defenders7 Philadelphia, Pennsylvania Delaware Blue Coats 8 Miami, Florida Miami FCUSL Palm Beach 9 Atlanta, Georgia Gwinnett Stripers (IL) College Park Skyhawks 11 Phoenix, Arizona Valley Suns Phoenix Rising FC 12 San Francisco-Oakland-Berkeley Oakland Roots SC 13 Inland Empire Ontario ReignCoachella Valley Firebirds 14 Detroit, Michigan Motor City Cruise Detroit City FC Michigan Panthers15 Seattle, Washington Tacoma Rainiers (PCL) 16 Minneapolis–Saint Paul St. Paul Saints (IL) 17 San Diego, California San Diego Clippers San Diego Gulls 18 Tampa Bay, Florida Tampa Bay Rowdies 21 St. Louis, Missouri St. Louis BattleHawks22 Orlando, Florida Osceola Magic 23 Charlotte, North Carolina Charlotte Knights (IL) Charlotte Checkers 24 San Antonio, Texas San Antonio FC San Antonio Brahmas25 Portland, Oregon Rip City Remix 26 Sacramento, California Sacramento River Cats (PCL) Sacramento Republic FC 27 Pittsburgh, Pennsylvania Pittsburgh Riverhounds SC 28 Austin, Texas Round Rock Express (PCL) Austin Spurs Texas Stars 29 Las Vegas, Nevada Las Vegas Aviators (PCL) Henderson Silver Knights Las Vegas Lights FC 32 Columbus, Ohio Columbus Clippers (IL) 33 Indianapolis, Indiana Indianapolis Indians (IL) Noblesville Boom Indy Eleven 34 Cleveland, Ohio Cleveland Charge Cleveland Monsters 35 San Jose-Sunnyvale-Santa Clara, California San Jose Barracuda 36 Nashville, Tennessee Nashville Sounds (IL) 37 Virginia Beach-Norfolk, Virginia Norfolk Tides (IL) 38 Providence, Rhode Island Providence Bruins Rhode Island FC 39 Jacksonville, Florida Jacksonville Jumbo Shrimp (IL) Sporting Club Jacksonville 40 Milwaukee, Wisconsin Milwaukee Admirals Milwaukee Pro Soccer 41 Oklahoma City Oklahoma City Comets (PCL) Oklahoma City Blue OKC Energy FC 42 Raleigh-Durham, North Carolina Durham Bulls (IL) North Carolina FC 43 Memphis, Tennessee Memphis Redbirds (IL) Memphis Hustle Memphis 901 FC Memphis Showboats45 Louisville, Kentucky Louisville Bats (IL) Louisville City FC 46 New Orleans, Louisiana USL New Orleans 47 Salt Lake City, Utah Salt Lake Bees (PCL) Salt Lake City Stars 48 Hartford, Connecticut Hartford Wolf Pack Hartford Athletic 49 Buffalo, New York Buffalo Bisons (IL) Buffalo Pro Soccer50 Birmingham, Alabama Birmingham Squadron Birmingham Legion FC Birmingham Stallions51 Rochester, New York Rochester Red Wings (IL) Rochester Americans 52 Grand Rapids, Michigan Grand Rapids Gold Grand Rapids Griffins 53 Tucson, Arizona Tucson Roadrunners 55 Tulsa, Oklahoma FC Tulsa 57 Worcester, Massachusetts Worcester Red Sox (IL) 58 Omaha, Nebraska Omaha Storm Chasers (IL) 59 Bridgeport, Connecticut Bridgeport Islanders 61 Albuquerque, New Mexico Albuquerque Isotopes (PCL) New Mexico United 62 Bakersfield, California Bakersfield Condors 65 McAllen, Texas Rio Grande Valley Vipers 67 El Paso, Texas El Paso Chihuahuas (PCL) El Paso Locomotive FC 69 Lehigh Valley Lehigh Valley IronPigs (IL) Lehigh Valley Phantoms 74 Charleston, South Carolina Charleston Battery 75 Stockton–Lodi, California Stockton Kings 76 Greensboro, North Carolina Greensboro Swarm 79 Colorado Springs Colorado Springs Switchbacks FC 82 Des Moines, Iowa Iowa Cubs (IL) Iowa Wolves Iowa Wild USL Pro Iowa 84 Springfield, Massachusetts Springfield Thunderbirds 91 Syracuse, New York Syracuse Mets (IL) Syracuse Crunch 94 Toledo, Ohio Toledo Mud Hens (IL) 98 Harrisburg, Pennsylvania Hershey Bears 100 Scranton/Wilkes-Barre, Pennsylvania Scranton/Wilkes-Barre RailRiders (IL) Wilkes-Barre/Scranton Penguins 104 Portland, Maine Maine Celtics 105 Northwest Arkansas Ozark United FC 109 Lexington, Kentucky Lexington SC 112 Reno, Nevada Reno Aces (PCL) 124 Salinas, California Monterey Bay FC 151 Fort Collins–Loveland, Colorado Colorado Eagles 154 Rockford, Illinois Rockford IceHogs 169 Utica, New York Utica Comets 177 Sioux Falls, South Dakota Sioux Falls Skyforce 182 Santa Cruz, California Santa Cruz Warriors 250 Oshkosh, Wisconsin Wisconsin Herd
See also List of developmental and minor sports leagues List of American and Canadian cities by number of major professional sports franchises List of professional sports teams in the United States and Canada List of auto racing tracks in the United States by city List of professional golf tournaments in the United States by city List of soccer clubs in the United States by city