| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,201 | 2,043 | 2,158 | .486 | -115 | 5 | 2 | 1 | 7 | 610 | 2 | 19,067 | 143,335 | 36,474 | 4,429 | .254 | 19,443 | 4.28 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,144 | 11,075 | 10,915 | .504 | 160 | 23 | 18 | 4 | 29 | 2120 | 54 | 99,005 | 758,206 | 196,981 | 14,894 | .260 | 97,529 | 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 | 19,242 | 9,086 | 10,046 | .475 | -960 | 10 | 7 | 3 | 15 | 1969 | 34 | 83,099 | 653,659 | 168,756 | 14,290 | .258 | 88,459 | 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 | 19,228 | 9,923 | 9,222 | .518 | 701 | 10 | 14 | 9 | 25 | 1936 | 39 | 89,804 | 658,069 | 175,661 | 14,452 | .267 | 86,189 | 3.92 |
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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 | 22,184 | 11,286 | 10,737 | .512 | 549 | 8 | 17 | 3 | 21 | 2237 | 46 | 102,068 | 759,135 | 198,828 | 15,101 | .262 | 98,634 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,240 | 9,579 | 9,558 | .501 | 21 | 6 | 6 | 3 | 11 | 1894 | 34 | 83,716 | 651,601 | 169,335 | 12,198 | .260 | 83,672 | 3.80 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,768 | 10,900 | 10,729 | .504 | 171 | 10 | 10 | 5 | 16 | 2156 | 37 | 97,688 | 741,779 | 193,347 | 14,187 | .261 | 96,937 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,240 | 9,816 | 9,333 | .513 | 483 | 11 | 6 | 2 | 16 | 1998 | 35 | 87,059 | 655,928 | 173,766 | 13,785 | .265 | 84,812 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,949 | 2,292 | 2,657 | .463 | -365 | 0 | 1 | 0 | 5 | 668 | 2 | 24,602 | 170,098 | 46,107 | 5,593 | .271 | 26,258 | 5.01 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,265 | 9,633 | 9,539 | .502 | 94 | 7 | 11 | 4 | 16 | 1796 | 24 | 88,452 | 657,036 | 173,658 | 14,447 | .264 | 88,284 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,908 | 4,967 | 4,936 | .502 | 31 | 13 | 5 | 2 | 17 | 994 | 10 | 42,255 | 336,256 | 85,716 | 8,295 | .255 | 41,603 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,763 | 4,171 | 4,590 | .476 | -419 | 8 | 4 | 2 | 9 | 1004 | 4 | 38,356 | 299,795 | 78,788 | 6,895 | .263 | 40,548 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,067 | 4,995 | 5,069 | .496 | -74 | 9 | 1 | 1 | 10 | 1222 | 12 | 43,612 | 341,678 | 87,552 | 9,078 | .256 | 44,191 | 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 | 21,568 | 11,389 | 10,040 | .531 | 1349 | 21 | 25 | 7 | 37 | 1963 | 53 | 97,265 | 734,903 | 192,007 | 13,946 | .261 | 91,134 | 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 | 4,940 | 2,273 | 2,667 | .460 | -394 | 0 | 2 | 2 | 4 | 742 | 5 | 20,771 | 167,875 | 42,766 | 4,485 | .255 | 22,860 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,771 | 4,268 | 4,499 | .487 | -231 | 6 | 1 | 0 | 9 | 1046 | 7 | 38,967 | 297,803 | 76,328 | 8,582 | .256 | 39,838 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,252 | 9,229 | 9,914 | .482 | -685 | 13 | 6 | 3 | 18 | 1815 | 29 | 84,694 | 656,826 | 172,345 | 11,899 | .262 | 87,901 | 3.99 |
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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 | 9,899 | 4,771 | 5,120 | .482 | -349 | 6 | 5 | 2 | 10 | 1243 | 16 | 40,784 | 334,972 | 83,715 | 8,430 | .250 | 41,686 | 3.81 |
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| 19 | New York Yankees | 1903 | 2024 | 18,944 | 10,739 | 8,117 | .570 | 2622 | 20 | 40 | 27 | 58 | 1803 | 47 | 92,010 | 645,697 | 171,467 | 17,135 | .266 | 79,007 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,205 | 9,294 | 9,824 | .486 | -530 | 17 | 15 | 9 | 29 | 2108 | 41 | 84,803 | 650,940 | 167,589 | 13,994 | .257 | 87,782 | 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 | 21,576 | 10,170 | 11,291 | .474 | -1121 | 12 | 8 | 2 | 16 | 2183 | 37 | 95,774 | 738,277 | 192,259 | 14,050 | .260 | 101,523 | 3.98 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,726 | 10,806 | 10,780 | .501 | 26 | 9 | 9 | 5 | 17 | 2139 | 40 | 96,725 | 744,284 | 196,020 | 12,151 | .263 | 96,874 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,778 | 4,083 | 4,693 | .465 | -610 | 5 | 2 | 0 | 7 | 1153 | 13 | 35,523 | 296,740 | 73,954 | 7,133 | .249 | 38,462 | 3.97 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,652 | 11,505 | 9,984 | .535 | 1521 | 9 | 23 | 8 | 27 | 1943 | 57 | 100,163 | 739,061 | 194,514 | 15,451 | .263 | 92,742 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,481 | 3,563 | 3,916 | .476 | -353 | 3 | 0 | 0 | 5 | 1006 | 7 | 33,192 | 255,254 | 65,670 | 7,580 | .257 | 34,916 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,767 | 11,250 | 10,365 | .520 | 885 | 15 | 23 | 11 | 32 | 2218 | 50 | 99,812 | 746,182 | 198,257 | 13,040 | .266 | 95,857 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,198 | 2,055 | 2,143 | .490 | -88 | 4 | 2 | 0 | 9 | 611 | 2 | 18,741 | 142,821 | 36,325 | 4,387 | .254 | 19,223 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,055 | 4,783 | 5,266 | .476 | -483 | 7 | 3 | 1 | 9 | 1252 | 10 | 45,325 | 343,361 | 88,674 | 10,065 | .258 | 47,339 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,480 | 3,728 | 3,749 | .499 | -21 | 6 | 2 | 2 | 10 | 927 | 10 | 34,627 | 256,324 | 66,702 | 8,140 | .260 | 34,229 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,767 | 4,236 | 4,527 | .483 | -291 | 5 | 1 | 1 | 6 | 1056 | 10 | 36,741 | 296,580 | 75,286 | 7,495 | .254 | 38,089 | 3.94 |
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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