| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,157 | 2,020 | 2,137 | .486 | -117 | 5 | 2 | 1 | 7 | 606 | 2 | 18,843 | 141,833 | 36,080 | 4,376 | .254 | 19,227 | 4.27 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,097 | 11,051 | 10,892 | .504 | 159 | 23 | 18 | 4 | 29 | 2113 | 54 | 98,816 | 756,632 | 196,613 | 14,835 | .260 | 97,362 | 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 | 19,196 | 9,058 | 10,028 | .475 | -970 | 10 | 7 | 3 | 15 | 1964 | 34 | 82,856 | 652,053 | 168,332 | 14,212 | .258 | 88,264 | 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 | 19,186 | 9,897 | 9,206 | .518 | 691 | 10 | 14 | 9 | 25 | 1933 | 39 | 89,597 | 656,613 | 175,284 | 14,399 | .267 | 85,990 | 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 | 22,141 | 11,270 | 10,710 | .513 | 560 | 8 | 17 | 3 | 21 | 2233 | 46 | 101,906 | 757,711 | 198,505 | 15,062 | .262 | 98,440 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,194 | 9,567 | 9,524 | .501 | 43 | 6 | 6 | 3 | 11 | 1889 | 34 | 83,548 | 650,044 | 168,981 | 12,149 | .260 | 83,437 | 3.79 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,724 | 10,876 | 10,709 | .504 | 167 | 10 | 10 | 5 | 16 | 2149 | 37 | 97,495 | 740,350 | 193,012 | 14,141 | .261 | 96,771 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,198 | 9,790 | 9,317 | .512 | 473 | 11 | 6 | 2 | 16 | 1993 | 35 | 86,851 | 654,549 | 173,417 | 13,733 | .265 | 84,641 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,904 | 2,275 | 2,629 | .464 | -354 | 0 | 1 | 0 | 5 | 660 | 2 | 24,411 | 168,577 | 45,741 | 5,544 | .271 | 25,985 | 5.00 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,220 | 9,613 | 9,514 | .503 | 99 | 7 | 11 | 4 | 16 | 1794 | 24 | 88,273 | 655,544 | 173,322 | 14,396 | .264 | 88,070 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,865 | 4,942 | 4,918 | .501 | 24 | 13 | 5 | 2 | 17 | 987 | 10 | 42,042 | 334,773 | 85,327 | 8,247 | .255 | 41,433 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,719 | 4,151 | 4,566 | .476 | -415 | 8 | 4 | 2 | 9 | 1000 | 4 | 38,159 | 298,331 | 78,425 | 6,846 | .263 | 40,352 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,024 | 4,976 | 5,045 | .497 | -69 | 9 | 1 | 1 | 10 | 1218 | 12 | 43,452 | 340,289 | 87,238 | 9,036 | .256 | 43,978 | 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 | 21,526 | 11,366 | 10,021 | .531 | 1345 | 21 | 25 | 7 | 37 | 1959 | 53 | 97,060 | 733,462 | 191,644 | 13,885 | .261 | 90,948 | 3.52 |
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| | Also played as Brooklyn Dodgers, Brooklyn Robins, Brooklyn Superbas, Brooklyn Grooms, Brooklyn and Brooklyn Bridegrooms |
| 15 | Miami Marlins | 1993 | 2024 | 4,898 | 2,256 | 2,642 | .461 | -386 | 0 | 2 | 2 | 4 | 738 | 5 | 20,639 | 166,453 | 42,437 | 4,455 | .255 | 22,676 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,726 | 4,242 | 4,480 | .486 | -238 | 6 | 1 | 0 | 9 | 1036 | 7 | 38,763 | 296,286 | 75,942 | 8,546 | .256 | 39,675 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,207 | 9,201 | 9,897 | .482 | -696 | 13 | 6 | 3 | 18 | 1811 | 29 | 84,443 | 655,275 | 171,908 | 11,835 | .262 | 87,700 | 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 | 9,856 | 4,748 | 5,100 | .482 | -352 | 6 | 5 | 2 | 10 | 1236 | 16 | 40,557 | 333,490 | 83,333 | 8,363 | .250 | 41,470 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 18,900 | 10,717 | 8,095 | .570 | 2622 | 20 | 40 | 27 | 58 | 1798 | 47 | 91,779 | 644,232 | 171,116 | 17,072 | .266 | 78,798 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,162 | 9,279 | 9,796 | .486 | -517 | 17 | 15 | 9 | 29 | 2100 | 41 | 84,636 | 649,504 | 167,263 | 13,943 | .258 | 87,586 | 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 | 21,534 | 10,146 | 11,273 | .474 | -1127 | 12 | 8 | 2 | 16 | 2180 | 37 | 95,588 | 736,823 | 191,883 | 13,998 | .260 | 101,366 | 3.98 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,684 | 10,785 | 10,759 | .501 | 26 | 9 | 9 | 5 | 17 | 2133 | 40 | 96,535 | 742,862 | 195,686 | 12,104 | .263 | 96,688 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,732 | 4,058 | 4,672 | .465 | -614 | 5 | 2 | 0 | 7 | 1149 | 13 | 35,309 | 295,175 | 73,533 | 7,079 | .249 | 38,257 | 3.96 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,609 | 11,484 | 9,962 | .535 | 1522 | 9 | 23 | 8 | 27 | 1937 | 57 | 99,958 | 737,581 | 194,158 | 15,403 | .263 | 92,538 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,436 | 3,539 | 3,895 | .476 | -356 | 3 | 0 | 0 | 5 | 1000 | 7 | 33,019 | 253,793 | 65,371 | 7,531 | .258 | 34,746 | 4.31 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,723 | 11,222 | 10,349 | .520 | 873 | 15 | 23 | 11 | 32 | 2215 | 50 | 99,618 | 744,664 | 197,868 | 12,992 | .266 | 95,679 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,156 | 2,036 | 2,120 | .490 | -84 | 4 | 2 | 0 | 9 | 609 | 2 | 18,580 | 141,422 | 36,008 | 4,346 | .255 | 19,024 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,012 | 4,764 | 5,242 | .476 | -478 | 7 | 3 | 1 | 9 | 1250 | 10 | 45,147 | 341,931 | 88,331 | 10,021 | .258 | 47,168 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,435 | 3,707 | 3,725 | .499 | -18 | 6 | 2 | 2 | 10 | 921 | 10 | 34,432 | 254,823 | 66,341 | 8,097 | .260 | 34,020 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,721 | 4,214 | 4,503 | .483 | -289 | 5 | 1 | 1 | 6 | 1052 | 10 | 36,536 | 295,056 | 74,899 | 7,457 | .254 | 37,880 | 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