| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,153 | 2,018 | 2,135 | .486 | -117 | 5 | 2 | 1 | 7 | 606 | 2 | 18,832 | 141,707 | 36,051 | 4,375 | .254 | 19,201 | 4.27 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,094 | 11,051 | 10,889 | .504 | 162 | 23 | 18 | 4 | 29 | 2113 | 54 | 98,813 | 756,536 | 196,594 | 14,835 | .260 | 97,343 | 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 | 19,192 | 9,055 | 10,027 | .475 | -972 | 10 | 7 | 3 | 15 | 1964 | 34 | 82,835 | 651,918 | 168,293 | 14,206 | .258 | 88,253 | 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 | 19,181 | 9,896 | 9,202 | .518 | 694 | 10 | 14 | 9 | 25 | 1933 | 39 | 89,570 | 656,434 | 175,235 | 14,390 | .267 | 85,959 | 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 | 22,136 | 11,268 | 10,707 | .513 | 561 | 8 | 17 | 3 | 21 | 2233 | 46 | 101,889 | 757,554 | 198,474 | 15,058 | .262 | 98,422 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,190 | 9,566 | 9,521 | .501 | 45 | 6 | 6 | 3 | 11 | 1888 | 34 | 83,541 | 649,914 | 168,952 | 12,148 | .260 | 83,420 | 3.79 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,719 | 10,875 | 10,705 | .504 | 170 | 10 | 10 | 5 | 16 | 2149 | 37 | 97,482 | 740,185 | 192,980 | 14,137 | .261 | 96,753 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,194 | 9,787 | 9,316 | .512 | 471 | 11 | 6 | 2 | 16 | 1993 | 35 | 86,832 | 654,421 | 173,383 | 13,728 | .265 | 84,629 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,900 | 2,274 | 2,626 | .464 | -352 | 0 | 1 | 0 | 5 | 660 | 2 | 24,393 | 168,434 | 45,705 | 5,540 | .271 | 25,957 | 5.00 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,216 | 9,611 | 9,512 | .503 | 99 | 7 | 11 | 4 | 16 | 1794 | 24 | 88,248 | 655,392 | 173,275 | 14,395 | .264 | 88,059 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,860 | 4,938 | 4,917 | .501 | 21 | 13 | 5 | 2 | 17 | 987 | 10 | 42,015 | 334,612 | 85,279 | 8,240 | .255 | 41,420 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,715 | 4,148 | 4,565 | .476 | -417 | 8 | 4 | 2 | 9 | 1000 | 4 | 38,138 | 298,200 | 78,388 | 6,843 | .263 | 40,339 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,020 | 4,973 | 5,044 | .496 | -71 | 9 | 1 | 1 | 10 | 1218 | 12 | 43,430 | 340,137 | 87,199 | 9,029 | .256 | 43,969 | 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 | 21,521 | 11,363 | 10,019 | .531 | 1344 | 21 | 25 | 7 | 37 | 1956 | 53 | 97,043 | 733,303 | 191,611 | 13,881 | .261 | 90,932 | 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 | 4,894 | 2,253 | 2,641 | .460 | -388 | 0 | 2 | 2 | 4 | 738 | 5 | 20,616 | 166,314 | 42,399 | 4,449 | .255 | 22,660 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,722 | 4,240 | 4,478 | .486 | -238 | 6 | 1 | 0 | 9 | 1035 | 7 | 38,741 | 296,151 | 75,906 | 8,538 | .256 | 39,657 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,202 | 9,201 | 9,892 | .482 | -691 | 13 | 6 | 3 | 18 | 1811 | 29 | 84,435 | 655,116 | 171,883 | 11,833 | .262 | 87,672 | 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 | 9,851 | 4,746 | 5,097 | .482 | -351 | 6 | 5 | 2 | 10 | 1236 | 16 | 40,530 | 333,298 | 83,282 | 8,360 | .250 | 41,434 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 18,895 | 10,712 | 8,095 | .570 | 2617 | 20 | 40 | 27 | 58 | 1798 | 47 | 91,753 | 644,060 | 171,066 | 17,062 | .266 | 78,793 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,157 | 9,279 | 9,791 | .487 | -512 | 17 | 15 | 9 | 29 | 2099 | 41 | 84,626 | 649,342 | 167,230 | 13,940 | .258 | 87,556 | 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 | 21,529 | 10,142 | 11,272 | .474 | -1130 | 12 | 8 | 2 | 16 | 2180 | 37 | 95,554 | 736,655 | 191,841 | 13,994 | .260 | 101,345 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,679 | 10,782 | 10,757 | .501 | 25 | 9 | 9 | 5 | 17 | 2133 | 40 | 96,516 | 742,686 | 195,642 | 12,098 | .263 | 96,668 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,729 | 4,056 | 4,671 | .465 | -615 | 5 | 2 | 0 | 7 | 1149 | 13 | 35,297 | 295,066 | 73,502 | 7,076 | .249 | 38,247 | 3.96 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,605 | 11,480 | 9,962 | .535 | 1518 | 9 | 23 | 8 | 27 | 1937 | 57 | 99,926 | 737,441 | 194,110 | 15,399 | .263 | 92,527 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,432 | 3,537 | 3,893 | .476 | -356 | 3 | 0 | 0 | 5 | 1000 | 7 | 33,006 | 253,661 | 65,337 | 7,529 | .258 | 34,726 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,719 | 11,220 | 10,347 | .520 | 873 | 15 | 23 | 11 | 32 | 2215 | 50 | 99,596 | 744,524 | 197,825 | 12,985 | .266 | 95,653 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,151 | 2,032 | 2,119 | .490 | -87 | 4 | 2 | 0 | 9 | 609 | 2 | 18,558 | 141,251 | 35,969 | 4,342 | .255 | 19,004 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,008 | 4,762 | 5,240 | .476 | -478 | 7 | 3 | 1 | 9 | 1249 | 10 | 45,136 | 341,796 | 88,306 | 10,015 | .258 | 47,153 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,431 | 3,706 | 3,722 | .499 | -16 | 6 | 2 | 2 | 10 | 921 | 10 | 34,418 | 254,696 | 66,315 | 8,095 | .260 | 34,006 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,717 | 4,214 | 4,499 | .484 | -285 | 5 | 1 | 1 | 6 | 1052 | 10 | 36,526 | 294,923 | 74,874 | 7,455 | .254 | 37,859 | 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