U.S. English Foundation Research
Many Languages, One America: Most Linguistically Diverse MSAs
| Rank | Region | Languages |
| 1 | Los Angeles-Long Beach-Santa Ana, Calif. | 137 |
| 2 | New York-Northern New Jersey-Long Island, N.Y.-N.J.-Pa. | 129 |
| 3 | Seattle-Tacoma-Bellevue, Wash. | 123 |
| 4 | Chicago-Naperville-Joliet, Ill.-Ind.-Wis. | 113 |
| 5 | San Francisco-Oakland-Fremont, Calif. | 112 |
| 6 (tie) | Phoenix-Mesa-Scottsdale, Ariz. | 110 |
| 6 (tie) | Washington-Arlington-Alexandria, D.C.-Va.-Md.-W.Va. | 110 |
| 6 (tie) | San Diego-Carlsbad-San Marcos, Calif. | 110 |
| 9 | San Jose-Sunnyvale-Santa Clara, Calif. | 104 |
| 10 | Dallas-Fort Worth-Arlington, Texas | 103 |
| 11 | Portland-Vancouver-Beaverton, Ore.-Wash. | 99 |
| 12 (tie) | Houston-Baytown-Sugar Land, Texas | 97 |
| 12 (tie) | Riverside-San Bernardino, Calif. | 97 |
| 14 (tie) | Detroit-Warren-Livonia, Mich. | 96 |
| 14 (tie) | Minneapolis-St. Paul-Bloomington, Minn.-Wis. | 96 |
| 14 (tie) | Boston-Cambridge-Quincy, Mass.-N.H. | 96 |
| 17 (tie) | Miami-Fort Lauderdale-Miami Beach, Fla. | 93 |
| 17 (tie) | Sacramento-Arden-Arcade-Roseville, Calif. | 93 |
| 19 | Philadelphia-Camden-Wilmington, Pa.-N.J.-Del.-Md. | 92 |
| 20 | Atlanta-Sandy Springs-Marietta, Ga. | 89 |
| 21 | Las Vegas-Paradise, Nev. | 84 |
| 22 | Honolulu, Hawaii | 82 |
| 23 (tie) | Denver-Aurora, Colo. | 81 |
| 23 (tie) | Cleveland-Elyria-Mentor, Ohio | 81 |
| 23 (tie) | Tampa-St. Petersburg-Clearwater, Fla. | 81 |
| 23 (tie) | Columbus, Ohio | 81 |
| 27 | Baltimore-Towson, Md. | 80 |
| 28 | Salt Lake City, Utah | 79 |
| 29 | Pittsburgh, Pa. | 78 |
| 30 (tie) | Austin-Round Rock, Texas | 76 |
| 30 (tie) | Buffalo-Niagara Falls, N.Y. | 76 |
| 30 (tie) | Kansas City, Mo.-Kan. | 76 |
| 30 (tie) | Milwaukee-Waukesha-West Allis, Wis. | 76 |
| 30 (tie) | St. Louis, Mo.-Ill. | 76 |
| 35 | Oxnard-Thousand Oaks-Ventura, Calif. | 75 |
| 36 (tie) | Bridgeport-Stanford-Norwalk, Conn. | 73 |
| 36 (tie) | Cincinnati-Middletown, Ohio-Ky.-Ind. | 73 |
| 38 (tie) | New Haven-Milford, Conn. | 72 |
| 38 (tie) | Hartford-West Hartford-East Hartford, Conn. | 72 |
| 38 (tie) | Jacksonville, Fla. | 72 |
| 41 (tie) | Madison, Wis. | 71 |
| 41 (tie) | Orlando, Fla. | 71 |
| 41 (tie) | Rochester, N.Y. | 71 |
| 44 (tie) | Providence-New Bedford-Fall River, R.I.-Mass. | 70 |
| 44 (tie) | Raleigh-Cary, N.C. | 70 |
| 44 (tie) | Tucson, Ariz. | 70 |
| 47 (tie) | Oklahoma City, Okla. | 69 |
| 47 (tie) | Charlotte-Gastonia-Concord, N.C.-S.C. | 69 |
| 47 (tie) | Indianapolis, Ind. | 69 |
| 47 (tie) | Nashville-Davidson-Murfreesboro, Tenn. | 69 |