| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2026 | 4,534 | 2,218 | 2,316 | .489 | -98 | 5 | 2 | 1 | 7 | 659 | 2 | 20,731 | 154,575 | 39,310 | 4,853 | .254 | 21,024 | 4.29 |
|---|
| 2 | Athletics | 1901 | 2026 | 19,537 | 9,448 | 10,002 | .486 | -554 | 17 | 15 | 9 | 29 | 2167 | 43 | 86,280 | 662,279 | 170,420 | 14,424 | .257 | 89,486 | 4.01 |
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| | Also played as Oakland Athletics, Kansas City Athletics and Philadelphia Athletics |
| 3 | Atlanta Braves | 1876 | 2026 | 22,478 | 11,248 | 11,076 | .504 | 172 | 23 | 18 | 4 | 30 | 2187 | 56 | 100,541 | 769,562 | 199,777 | 15,327 | .260 | 98,929 | 3.67 |
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| | Also played as Milwaukee Braves, Boston Braves, Boston Bees, Boston, Boston Doves, Boston Nationals and Boston Reds |
| 4 | Baltimore Orioles | 1901 | 2026 | 19,577 | 9,244 | 10,223 | .475 | -979 | 10 | 7 | 3 | 16 | 2041 | 34 | 84,562 | 664,882 | 171,421 | 14,690 | .258 | 90,066 | 4.06 |
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| | Also played as St. Louis Browns and Milwaukee Brewers |
| | Boston Braves, see Atlanta Braves |
| 5 | Boston Red Sox | 1901 | 2026 | 19,562 | 10,095 | 9,384 | .518 | 711 | 10 | 14 | 9 | 26 | 2001 | 40 | 91,346 | 669,448 | 178,516 | 14,824 | .267 | 87,607 | 3.92 |
|---|
| | Also played as Boston Americans |
| | Brooklyn Dodgers, see Los Angeles Dodgers |
| | California Angels, see Los Angeles Angels |
| 6 | Chicago Cubs | 1876 | 2026 | 22,517 | 11,475 | 10,881 | .513 | 594 | 8 | 17 | 3 | 22 | 2301 | 46 | 103,731 | 770,482 | 201,668 | 15,533 | .262 | 100,002 | 3.70 |
|---|
| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 7 | Chicago White Sox | 1901 | 2026 | 19,570 | 9,707 | 9,760 | .499 | -53 | 6 | 6 | 3 | 11 | 1979 | 36 | 85,048 | 662,591 | 171,889 | 12,545 | .259 | 85,187 | 3.80 |
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| 8 | Cincinnati Reds | 1882 | 2026 | 22,100 | 11,062 | 10,899 | .504 | 163 | 10 | 10 | 5 | 17 | 2204 | 38 | 99,129 | 752,908 | 196,006 | 14,568 | .260 | 98,425 | 3.77 |
|---|
| | Also played as Cincinnati Redlegs and Cincinnati |
| 9 | Cleveland Guardians | 1901 | 2026 | 19,575 | 9,993 | 9,491 | .513 | 502 | 13 | 6 | 2 | 18 | 2038 | 37 | 88,379 | 666,934 | 176,281 | 14,136 | .264 | 86,150 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 10 | Colorado Rockies | 1993 | 2026 | 5,284 | 2,404 | 2,880 | .455 | -476 | 0 | 1 | 0 | 5 | 726 | 2 | 25,995 | 181,339 | 48,838 | 5,962 | .269 | 28,261 | 5.05 |
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| 11 | Detroit Tigers | 1901 | 2026 | 19,598 | 9,810 | 9,695 | .503 | 115 | 7 | 11 | 4 | 18 | 1847 | 24 | 89,946 | 668,217 | 176,359 | 14,840 | .264 | 89,620 | 4.00 |
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| 12 | Houston Astros | 1962 | 2026 | 10,243 | 5,144 | 5,094 | .502 | 50 | 14 | 5 | 2 | 18 | 1046 | 13 | 43,715 | 347,602 | 88,545 | 8,700 | .255 | 43,038 | 3.81 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 13 | Kansas City Royals | 1969 | 2026 | 9,096 | 4,331 | 4,763 | .476 | -432 | 8 | 4 | 2 | 10 | 1048 | 5 | 39,754 | 311,003 | 81,566 | 7,233 | .262 | 41,995 | 4.26 |
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| 14 | Los Angeles Angels | 1961 | 2026 | 10,402 | 5,133 | 5,266 | .494 | -133 | 9 | 1 | 1 | 10 | 1296 | 13 | 44,994 | 352,809 | 90,095 | 9,486 | .255 | 45,877 | 4.02 |
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| | Also played as Los Angeles Angels of Anaheim, Anaheim Angels and California Angels |
| 15 | Los Angeles Dodgers | 1884 | 2026 | 21,902 | 11,588 | 10,175 | .532 | 1413 | 23 | 27 | 9 | 39 | 2014 | 56 | 98,998 | 746,197 | 194,906 | 14,430 | .261 | 92,521 | 3.53 |
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| | Also played as Brooklyn Dodgers, Brooklyn Robins, Brooklyn Superbas, Brooklyn Grooms, Brooklyn and Brooklyn Bridegrooms |
| 16 | Miami Marlins | 1993 | 2026 | 5,275 | 2,434 | 2,841 | .461 | -407 | 0 | 2 | 2 | 4 | 806 | 6 | 22,253 | 179,261 | 45,645 | 4,821 | .255 | 24,485 | 4.30 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 17 | Milwaukee Brewers | 1969 | 2026 | 9,104 | 4,468 | 4,632 | .491 | -164 | 8 | 1 | 0 | 11 | 1093 | 9 | 40,621 | 309,086 | 79,178 | 8,925 | .256 | 41,127 | 4.12 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 18 | Minnesota Twins | 1901 | 2026 | 19,586 | 9,378 | 10,099 | .481 | -721 | 13 | 6 | 3 | 18 | 1872 | 29 | 86,142 | 668,059 | 175,043 | 12,285 | .262 | 89,523 | 4.00 |
|---|
| | Also played as Washington Senators and Washington Nationals |
| | Montreal Expos, see Washington Nationals |
| | New York Giants, see San Francisco Giants |
| 19 | New York Mets | 1962 | 2026 | 10,235 | 4,941 | 5,286 | .483 | -345 | 6 | 5 | 2 | 11 | 1313 | 19 | 42,304 | 346,260 | 86,463 | 8,867 | .250 | 43,149 | 3.81 |
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| 20 | New York Yankees | 1903 | 2026 | 19,276 | 10,928 | 8,260 | .570 | 2668 | 21 | 41 | 27 | 60 | 1847 | 51 | 93,685 | 656,860 | 174,213 | 17,661 | .265 | 80,384 | 3.66 |
|---|
| | Also played as New York Highlanders |
| | Oakland Athletics, see Athletics |
| | Philadelphia Athletics, see Oakland Athletics |
| 21 | Philadelphia Phillies | 1883 | 2026 | 21,911 | 10,359 | 11,437 | .475 | -1078 | 14 | 8 | 2 | 18 | 2226 | 39 | 97,336 | 749,643 | 195,116 | 14,487 | .260 | 102,961 | 3.99 |
|---|
| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2026 | 22,061 | 10,962 | 10,959 | .500 | 3 | 9 | 9 | 5 | 17 | 2196 | 41 | 98,141 | 755,600 | 198,769 | 12,466 | .263 | 98,352 | 3.76 |
|---|
| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2026 | 9,108 | 4,266 | 4,840 | .468 | -574 | 5 | 2 | 0 | 9 | 1199 | 13 | 36,955 | 307,778 | 76,688 | 7,478 | .249 | 39,778 | 3.96 |
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| 24 | San Francisco Giants | 1883 | 2026 | 21,985 | 11,664 | 10,158 | .535 | 1506 | 9 | 23 | 8 | 27 | 1992 | 59 | 101,570 | 750,245 | 197,197 | 15,824 | .263 | 94,169 | 3.59 |
|---|
| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2026 | 7,814 | 3,740 | 4,072 | .479 | -332 | 4 | 0 | 0 | 6 | 1054 | 8 | 34,694 | 266,424 | 68,326 | 8,022 | .256 | 36,260 | 4.27 |
|---|
| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2026 | 22,100 | 11,414 | 10,534 | .520 | 880 | 15 | 23 | 11 | 32 | 2252 | 52 | 101,250 | 757,382 | 201,007 | 13,376 | .265 | 97,371 | 3.69 |
|---|
| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2026 | 4,531 | 2,225 | 2,306 | .491 | -81 | 4 | 2 | 0 | 9 | 669 | 2 | 20,142 | 153,974 | 39,086 | 4,735 | .254 | 20,565 | 4.20 |
|---|
| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2026 | 10,388 | 4,949 | 5,433 | .477 | -484 | 7 | 3 | 1 | 9 | 1313 | 12 | 46,709 | 354,540 | 91,320 | 10,436 | .258 | 48,750 | 4.28 |
|---|
| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2026 | 7,814 | 3,901 | 3,910 | .499 | -9 | 7 | 3 | 2 | 11 | 991 | 12 | 36,135 | 267,633 | 69,586 | 8,508 | .260 | 35,723 | 4.22 |
|---|
| 30 | Washington Nationals | 1969 | 2026 | 9,101 | 4,382 | 4,715 | .482 | -333 | 5 | 1 | 1 | 6 | 1110 | 10 | 38,259 | 307,839 | 78,059 | 7,863 | .254 | 39,881 | 3.98 |
|---|
| | Also played as Montreal Expos |
| | Washington Senators/Nationals (1901-1960), see Minnesota Twins |
| | Washington Senators (1961-1971), see Texas Rangers |
Inactive Franchises