| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,178 | 2,030 | 2,148 | .486 | -118 | 5 | 2 | 1 | 7 | 607 | 2 | 18,937 | 142,554 | 36,265 | 4,400 | .254 | 19,333 | 4.27 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,120 | 11,060 | 10,906 | .504 | 154 | 23 | 18 | 4 | 29 | 2118 | 54 | 98,902 | 757,404 | 196,787 | 14,858 | .260 | 97,461 | 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 | 19,219 | 9,074 | 10,035 | .475 | -961 | 10 | 7 | 3 | 15 | 1967 | 34 | 82,979 | 652,843 | 168,533 | 14,250 | .258 | 88,335 | 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 | 19,207 | 9,908 | 9,216 | .518 | 692 | 10 | 14 | 9 | 25 | 1935 | 39 | 89,695 | 657,324 | 175,464 | 14,422 | .267 | 86,087 | 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 | 22,161 | 11,277 | 10,723 | .513 | 554 | 8 | 17 | 3 | 21 | 2235 | 46 | 101,984 | 758,391 | 198,660 | 15,081 | .262 | 98,542 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,216 | 9,570 | 9,543 | .501 | 27 | 6 | 6 | 3 | 11 | 1893 | 34 | 83,626 | 650,780 | 169,143 | 12,175 | .260 | 83,566 | 3.80 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,745 | 10,890 | 10,716 | .504 | 174 | 10 | 10 | 5 | 16 | 2150 | 37 | 97,595 | 741,015 | 193,176 | 14,165 | .261 | 96,849 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,217 | 9,803 | 9,323 | .513 | 480 | 11 | 6 | 2 | 16 | 1995 | 35 | 86,955 | 655,171 | 173,568 | 13,755 | .265 | 84,714 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,926 | 2,284 | 2,642 | .464 | -358 | 0 | 1 | 0 | 5 | 666 | 2 | 24,507 | 169,336 | 45,927 | 5,563 | .271 | 26,122 | 5.01 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,241 | 9,622 | 9,526 | .503 | 96 | 7 | 11 | 4 | 16 | 1796 | 24 | 88,363 | 656,244 | 173,477 | 14,419 | .264 | 88,186 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,887 | 4,952 | 4,930 | .501 | 22 | 13 | 5 | 2 | 17 | 989 | 10 | 42,132 | 335,526 | 85,514 | 8,276 | .255 | 41,512 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,740 | 4,161 | 4,577 | .476 | -416 | 8 | 4 | 2 | 9 | 1002 | 4 | 38,275 | 299,056 | 78,622 | 6,871 | .263 | 40,464 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,044 | 4,984 | 5,057 | .496 | -73 | 9 | 1 | 1 | 10 | 1219 | 12 | 43,524 | 340,937 | 87,386 | 9,060 | .256 | 44,080 | 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 | 21,546 | 11,376 | 10,031 | .531 | 1345 | 21 | 25 | 7 | 37 | 1961 | 53 | 97,155 | 734,152 | 191,821 | 13,914 | .261 | 91,024 | 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 | 4,917 | 2,264 | 2,653 | .460 | -389 | 0 | 2 | 2 | 4 | 738 | 5 | 20,696 | 167,090 | 42,590 | 4,466 | .255 | 22,753 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,748 | 4,255 | 4,489 | .487 | -234 | 6 | 1 | 0 | 9 | 1040 | 7 | 38,859 | 297,026 | 76,128 | 8,559 | .256 | 39,748 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,229 | 9,213 | 9,907 | .482 | -694 | 13 | 6 | 3 | 18 | 1813 | 29 | 84,547 | 655,999 | 172,088 | 11,862 | .262 | 87,801 | 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 | 9,876 | 4,756 | 5,112 | .482 | -356 | 6 | 5 | 2 | 10 | 1238 | 16 | 40,650 | 334,179 | 83,508 | 8,391 | .250 | 41,579 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 18,922 | 10,733 | 8,101 | .570 | 2632 | 20 | 40 | 27 | 58 | 1799 | 47 | 91,902 | 644,967 | 171,304 | 17,108 | .266 | 78,872 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,183 | 9,286 | 9,810 | .486 | -524 | 17 | 15 | 9 | 29 | 2107 | 41 | 84,706 | 650,222 | 167,422 | 13,964 | .257 | 87,678 | 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 | 21,553 | 10,158 | 11,280 | .474 | -1122 | 12 | 8 | 2 | 16 | 2181 | 37 | 95,674 | 737,467 | 192,040 | 14,021 | .260 | 101,423 | 3.98 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,703 | 10,795 | 10,768 | .501 | 27 | 9 | 9 | 5 | 17 | 2136 | 40 | 96,628 | 743,519 | 195,842 | 12,120 | .263 | 96,778 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,756 | 4,071 | 4,683 | .465 | -612 | 5 | 2 | 0 | 7 | 1151 | 13 | 35,411 | 295,983 | 73,753 | 7,103 | .249 | 38,347 | 3.96 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,630 | 11,495 | 9,972 | .535 | 1523 | 9 | 23 | 8 | 27 | 1940 | 57 | 100,054 | 738,312 | 194,332 | 15,426 | .263 | 92,633 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,459 | 3,554 | 3,903 | .477 | -349 | 3 | 0 | 0 | 5 | 1006 | 7 | 33,113 | 254,536 | 65,527 | 7,555 | .257 | 34,829 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,743 | 11,234 | 10,357 | .520 | 877 | 15 | 23 | 11 | 32 | 2216 | 50 | 99,702 | 745,341 | 198,035 | 13,016 | .266 | 95,753 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,176 | 2,043 | 2,133 | .489 | -90 | 4 | 2 | 0 | 9 | 611 | 2 | 18,645 | 142,084 | 36,146 | 4,358 | .254 | 19,123 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,031 | 4,772 | 5,253 | .476 | -481 | 7 | 3 | 1 | 9 | 1252 | 10 | 45,217 | 342,555 | 88,471 | 10,039 | .258 | 47,243 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,458 | 3,720 | 3,735 | .499 | -15 | 6 | 2 | 2 | 10 | 922 | 10 | 34,533 | 255,605 | 66,528 | 8,116 | .260 | 34,110 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,743 | 4,226 | 4,513 | .484 | -287 | 5 | 1 | 1 | 6 | 1053 | 10 | 36,632 | 295,771 | 75,078 | 7,473 | .254 | 37,974 | 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