| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,238 | 2,070 | 2,168 | .488 | -98 | 5 | 2 | 1 | 7 | 616 | 2 | 19,297 | 144,606 | 36,825 | 4,491 | .255 | 19,603 | 4.27 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,182 | 11,093 | 10,935 | .504 | 158 | 23 | 18 | 4 | 29 | 2124 | 54 | 99,166 | 759,483 | 197,289 | 14,958 | .260 | 97,698 | 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 | 19,281 | 9,103 | 10,068 | .475 | -965 | 10 | 7 | 3 | 15 | 1982 | 34 | 83,280 | 654,980 | 169,084 | 14,340 | .258 | 88,660 | 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 | 19,265 | 9,941 | 9,241 | .518 | 700 | 10 | 14 | 9 | 25 | 1944 | 39 | 90,018 | 659,406 | 176,039 | 14,509 | .267 | 86,411 | 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 | 22,221 | 11,307 | 10,753 | .513 | 554 | 8 | 17 | 3 | 21 | 2243 | 46 | 102,231 | 760,387 | 199,138 | 15,146 | .262 | 98,765 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,275 | 9,584 | 9,588 | .500 | -4 | 6 | 6 | 3 | 11 | 1901 | 34 | 83,813 | 652,754 | 169,581 | 12,222 | .260 | 83,862 | 3.80 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,805 | 10,919 | 10,747 | .504 | 172 | 10 | 10 | 5 | 16 | 2164 | 37 | 97,866 | 743,023 | 193,647 | 14,250 | .261 | 97,112 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,278 | 9,833 | 9,354 | .512 | 479 | 11 | 6 | 2 | 16 | 2004 | 35 | 87,196 | 657,176 | 174,035 | 13,826 | .265 | 84,976 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,986 | 2,307 | 2,679 | .463 | -372 | 0 | 1 | 0 | 5 | 672 | 2 | 24,770 | 171,343 | 46,410 | 5,645 | .271 | 26,476 | 5.02 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,302 | 9,652 | 9,557 | .502 | 95 | 7 | 11 | 4 | 16 | 1804 | 24 | 88,609 | 658,278 | 173,949 | 14,488 | .264 | 88,430 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,945 | 4,990 | 4,950 | .502 | 40 | 13 | 5 | 2 | 17 | 1000 | 10 | 42,408 | 337,508 | 86,033 | 8,341 | .255 | 41,720 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,798 | 4,193 | 4,603 | .477 | -410 | 8 | 4 | 2 | 9 | 1008 | 4 | 38,556 | 301,015 | 79,136 | 6,941 | .263 | 40,694 | 4.26 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,105 | 5,012 | 5,090 | .496 | -78 | 9 | 1 | 1 | 10 | 1229 | 12 | 43,757 | 342,920 | 87,841 | 9,110 | .256 | 44,367 | 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 | 21,605 | 11,410 | 10,056 | .532 | 1354 | 21 | 25 | 7 | 37 | 1971 | 53 | 97,437 | 736,151 | 192,313 | 13,994 | .261 | 91,299 | 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 | 4,977 | 2,287 | 2,690 | .460 | -403 | 0 | 2 | 2 | 4 | 752 | 5 | 20,926 | 169,139 | 43,091 | 4,530 | .255 | 23,055 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,807 | 4,288 | 4,515 | .487 | -227 | 6 | 1 | 0 | 9 | 1049 | 7 | 39,131 | 298,994 | 76,619 | 8,621 | .256 | 39,981 | 4.14 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,288 | 9,248 | 9,931 | .482 | -683 | 13 | 6 | 3 | 18 | 1819 | 29 | 84,863 | 658,047 | 172,646 | 11,944 | .262 | 88,050 | 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 | 9,938 | 4,794 | 5,136 | .483 | -342 | 6 | 5 | 2 | 10 | 1249 | 16 | 40,972 | 336,292 | 84,056 | 8,481 | .250 | 41,840 | 3.81 |
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| 19 | New York Yankees | 1903 | 2024 | 18,980 | 10,759 | 8,133 | .570 | 2626 | 20 | 40 | 27 | 58 | 1809 | 47 | 92,200 | 646,944 | 171,789 | 17,199 | .266 | 79,173 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,241 | 9,315 | 9,839 | .486 | -524 | 17 | 15 | 9 | 29 | 2113 | 41 | 84,966 | 652,135 | 167,886 | 14,041 | .257 | 87,925 | 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 | 21,613 | 10,186 | 11,312 | .474 | -1126 | 12 | 8 | 2 | 16 | 2189 | 37 | 95,944 | 739,541 | 192,574 | 14,096 | .260 | 101,702 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,763 | 10,823 | 10,800 | .501 | 23 | 9 | 9 | 5 | 17 | 2145 | 40 | 96,880 | 745,547 | 196,328 | 12,184 | .263 | 97,028 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,813 | 4,106 | 4,705 | .466 | -599 | 5 | 2 | 0 | 7 | 1159 | 13 | 35,700 | 297,945 | 74,280 | 7,175 | .249 | 38,600 | 3.97 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,690 | 11,526 | 10,001 | .535 | 1525 | 9 | 23 | 8 | 27 | 1949 | 57 | 100,317 | 740,335 | 194,819 | 15,493 | .263 | 92,880 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,517 | 3,578 | 3,937 | .476 | -359 | 3 | 0 | 0 | 5 | 1013 | 7 | 33,345 | 256,442 | 65,924 | 7,623 | .257 | 35,059 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,804 | 11,265 | 10,387 | .520 | 878 | 15 | 23 | 11 | 32 | 2221 | 50 | 99,966 | 747,435 | 198,571 | 13,087 | .266 | 96,034 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,235 | 2,075 | 2,160 | .490 | -85 | 4 | 2 | 0 | 9 | 618 | 2 | 18,871 | 144,038 | 36,592 | 4,420 | .254 | 19,337 | 4.23 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,092 | 4,799 | 5,287 | .476 | -488 | 7 | 3 | 1 | 9 | 1258 | 10 | 45,463 | 344,599 | 88,950 | 10,109 | .258 | 47,527 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,518 | 3,747 | 3,768 | .499 | -21 | 6 | 2 | 2 | 10 | 933 | 10 | 34,805 | 257,613 | 67,027 | 8,187 | .260 | 34,423 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,804 | 4,252 | 4,548 | .483 | -296 | 5 | 1 | 1 | 6 | 1060 | 10 | 36,905 | 297,818 | 75,605 | 7,526 | .254 | 38,292 | 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