| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,260 | 2,081 | 2,179 | .488 | -98 | 5 | 2 | 1 | 7 | 616 | 2 | 19,443 | 145,366 | 37,044 | 4,527 | .255 | 19,732 | 4.28 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,205 | 11,106 | 10,945 | .504 | 161 | 23 | 18 | 4 | 29 | 2126 | 54 | 99,262 | 760,260 | 197,467 | 14,980 | .260 | 97,778 | 3.67 |
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| | Also played as Milwaukee Braves, Boston Braves, Boston Bees, Boston, Boston Doves, Boston Nationals and Boston Reds |
| 3 | Baltimore Orioles | 1901 | 2024 | 19,302 | 9,113 | 10,079 | .475 | -966 | 10 | 7 | 3 | 15 | 1984 | 34 | 83,362 | 655,676 | 169,234 | 14,362 | .258 | 88,745 | 4.05 |
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| | Also played as St. Louis Browns and Milwaukee Brewers |
| | Boston Braves, see Atlanta Braves |
| 4 | Boston Red Sox | 1901 | 2024 | 19,289 | 9,949 | 9,257 | .518 | 692 | 10 | 14 | 9 | 25 | 1947 | 39 | 90,100 | 660,185 | 176,212 | 14,535 | .267 | 86,517 | 3.93 |
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| | Also played as Boston Americans |
| | Brooklyn Dodgers, see Los Angeles Dodgers |
| | California Angels, see Los Angeles Angels |
| 5 | Chicago Cubs | 1876 | 2024 | 22,243 | 11,321 | 10,761 | .513 | 560 | 8 | 17 | 3 | 21 | 2245 | 46 | 102,386 | 761,182 | 199,368 | 15,174 | .262 | 98,862 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,298 | 9,589 | 9,606 | .500 | -17 | 6 | 6 | 3 | 11 | 1905 | 34 | 83,885 | 653,529 | 169,767 | 12,239 | .260 | 83,982 | 3.80 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,828 | 10,930 | 10,759 | .504 | 171 | 10 | 10 | 5 | 16 | 2169 | 37 | 97,968 | 743,796 | 193,838 | 14,266 | .261 | 97,215 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,302 | 9,847 | 9,364 | .513 | 483 | 11 | 6 | 2 | 16 | 2006 | 35 | 87,295 | 657,964 | 174,231 | 13,853 | .265 | 85,062 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 5,009 | 2,318 | 2,691 | .463 | -373 | 0 | 1 | 0 | 5 | 675 | 2 | 24,862 | 172,103 | 46,583 | 5,674 | .271 | 26,587 | 5.01 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,325 | 9,668 | 9,564 | .503 | 104 | 7 | 11 | 4 | 16 | 1806 | 24 | 88,722 | 659,070 | 174,152 | 14,513 | .264 | 88,500 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,968 | 5,002 | 4,961 | .502 | 41 | 13 | 5 | 2 | 17 | 1001 | 10 | 42,517 | 338,308 | 86,248 | 8,367 | .255 | 41,810 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,822 | 4,204 | 4,616 | .477 | -412 | 8 | 4 | 2 | 9 | 1012 | 4 | 38,653 | 301,815 | 79,320 | 6,969 | .263 | 40,799 | 4.26 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,127 | 5,018 | 5,106 | .496 | -88 | 9 | 1 | 1 | 10 | 1236 | 12 | 43,839 | 343,619 | 87,973 | 9,140 | .256 | 44,473 | 4.00 |
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| | Also played as Los Angeles Angels of Anaheim, Anaheim Angels and California Angels |
| 14 | Los Angeles Dodgers | 1884 | 2024 | 21,627 | 11,423 | 10,065 | .532 | 1358 | 21 | 25 | 7 | 37 | 1972 | 53 | 97,558 | 736,895 | 192,505 | 14,031 | .261 | 91,416 | 3.53 |
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| | Also played as Brooklyn Dodgers, Brooklyn Robins, Brooklyn Superbas, Brooklyn Grooms, Brooklyn and Brooklyn Bridegrooms |
| 15 | Miami Marlins | 1993 | 2024 | 5,000 | 2,296 | 2,704 | .459 | -408 | 0 | 2 | 2 | 4 | 760 | 5 | 21,022 | 169,917 | 43,285 | 4,549 | .255 | 23,178 | 4.30 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,830 | 4,302 | 4,524 | .487 | -222 | 6 | 1 | 0 | 9 | 1051 | 7 | 39,260 | 299,784 | 76,806 | 8,657 | .256 | 40,072 | 4.14 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,311 | 9,256 | 9,946 | .482 | -690 | 13 | 6 | 3 | 18 | 1821 | 29 | 84,942 | 658,797 | 172,814 | 11,965 | .262 | 88,169 | 4.00 |
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| | Also played as Washington Senators and Washington Nationals |
| | Montreal Expos, see Washington Nationals |
| | New York Giants, see San Francisco Giants |
| 18 | New York Mets | 1962 | 2024 | 9,960 | 4,809 | 5,143 | .483 | -334 | 6 | 5 | 2 | 10 | 1252 | 16 | 41,068 | 337,016 | 84,218 | 8,508 | .250 | 41,903 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 19,002 | 10,771 | 8,143 | .569 | 2628 | 20 | 40 | 27 | 58 | 1810 | 47 | 92,293 | 647,670 | 171,963 | 17,224 | .266 | 79,268 | 3.66 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,264 | 9,325 | 9,852 | .486 | -527 | 17 | 15 | 9 | 29 | 2115 | 41 | 85,065 | 652,954 | 168,095 | 14,074 | .257 | 88,057 | 4.00 |
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| | Also played as Kansas City Athletics and Philadelphia Athletics |
| | Philadelphia Athletics, see Oakland Athletics |
| 21 | Philadelphia Phillies | 1883 | 2024 | 21,636 | 10,202 | 11,319 | .474 | -1117 | 12 | 8 | 2 | 16 | 2193 | 37 | 96,059 | 740,331 | 192,790 | 14,125 | .260 | 101,802 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,786 | 10,834 | 10,812 | .501 | 22 | 9 | 9 | 5 | 17 | 2149 | 40 | 96,982 | 746,318 | 196,513 | 12,203 | .263 | 97,165 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,835 | 4,120 | 4,713 | .466 | -593 | 5 | 2 | 0 | 7 | 1161 | 13 | 35,805 | 298,706 | 74,485 | 7,203 | .249 | 38,680 | 3.96 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,711 | 11,533 | 10,015 | .535 | 1518 | 9 | 23 | 8 | 27 | 1950 | 57 | 100,394 | 741,030 | 194,963 | 15,520 | .263 | 92,975 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,539 | 3,591 | 3,946 | .476 | -355 | 3 | 0 | 0 | 5 | 1013 | 7 | 33,459 | 257,170 | 66,109 | 7,649 | .257 | 35,134 | 4.29 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,827 | 11,277 | 10,398 | .520 | 879 | 15 | 23 | 11 | 32 | 2222 | 50 | 100,054 | 748,223 | 198,764 | 13,107 | .266 | 96,129 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,258 | 2,084 | 2,174 | .489 | -90 | 4 | 2 | 0 | 9 | 620 | 2 | 18,952 | 144,819 | 36,773 | 4,441 | .254 | 19,431 | 4.23 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,114 | 4,811 | 5,297 | .476 | -486 | 7 | 3 | 1 | 9 | 1261 | 10 | 45,550 | 345,340 | 89,123 | 10,129 | .258 | 47,640 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,540 | 3,759 | 3,778 | .499 | -19 | 6 | 2 | 2 | 10 | 934 | 10 | 34,903 | 258,376 | 67,222 | 8,210 | .260 | 34,493 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,826 | 4,262 | 4,560 | .483 | -298 | 5 | 1 | 1 | 6 | 1063 | 10 | 36,985 | 298,543 | 75,777 | 7,547 | .254 | 38,392 | 3.95 |
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| | Also played as Montreal Expos |
| | Washington Senators/Nationals (1901-1960), see Minnesota Twins |
| | Washington Senators (1961-1971), see Texas Rangers |
Inactive Franchises