| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,144 | 2,012 | 2,132 | .486 | -120 | 5 | 2 | 1 | 7 | 606 | 2 | 18,783 | 141,398 | 35,974 | 4,364 | .254 | 19,166 | 4.27 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,086 | 11,045 | 10,887 | .504 | 158 | 23 | 18 | 4 | 29 | 2111 | 54 | 98,783 | 756,283 | 196,535 | 14,823 | .260 | 97,329 | 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 | 19,185 | 9,051 | 10,024 | .474 | -973 | 10 | 7 | 3 | 15 | 1964 | 34 | 82,804 | 651,678 | 168,242 | 14,195 | .258 | 88,225 | 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 | 19,173 | 9,892 | 9,198 | .518 | 694 | 10 | 14 | 9 | 25 | 1933 | 39 | 89,543 | 656,158 | 175,172 | 14,385 | .267 | 85,930 | 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 | 22,127 | 11,264 | 10,702 | .513 | 562 | 8 | 17 | 3 | 21 | 2233 | 46 | 101,857 | 757,260 | 198,408 | 15,049 | .262 | 98,386 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,180 | 9,560 | 9,517 | .501 | 43 | 6 | 6 | 3 | 11 | 1888 | 34 | 83,510 | 649,592 | 168,877 | 12,138 | .260 | 83,386 | 3.79 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,710 | 10,873 | 10,698 | .504 | 175 | 10 | 10 | 5 | 16 | 2146 | 37 | 97,451 | 739,884 | 192,906 | 14,130 | .261 | 96,706 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,184 | 9,781 | 9,312 | .512 | 469 | 11 | 6 | 2 | 16 | 1992 | 35 | 86,787 | 654,102 | 173,317 | 13,715 | .265 | 84,596 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,891 | 2,268 | 2,623 | .464 | -355 | 0 | 1 | 0 | 5 | 660 | 2 | 24,349 | 168,124 | 45,618 | 5,532 | .271 | 25,925 | 5.01 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,207 | 9,608 | 9,506 | .503 | 102 | 7 | 11 | 4 | 16 | 1793 | 24 | 88,211 | 655,088 | 173,206 | 14,387 | .264 | 88,018 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,851 | 4,933 | 4,913 | .501 | 20 | 13 | 5 | 2 | 17 | 986 | 10 | 41,973 | 334,299 | 85,196 | 8,228 | .255 | 41,377 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,705 | 4,142 | 4,561 | .476 | -419 | 8 | 4 | 2 | 9 | 1000 | 4 | 38,097 | 297,866 | 78,306 | 6,837 | .263 | 40,300 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,010 | 4,970 | 5,037 | .497 | -67 | 9 | 1 | 1 | 10 | 1216 | 12 | 43,387 | 339,804 | 87,118 | 9,020 | .256 | 43,921 | 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 | 21,512 | 11,356 | 10,017 | .531 | 1339 | 21 | 25 | 7 | 37 | 1956 | 53 | 96,999 | 733,014 | 191,549 | 13,866 | .261 | 90,913 | 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 | 4,885 | 2,250 | 2,635 | .461 | -385 | 0 | 2 | 2 | 4 | 736 | 5 | 20,580 | 166,009 | 42,326 | 4,440 | .255 | 22,612 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,712 | 4,235 | 4,473 | .486 | -238 | 6 | 1 | 0 | 9 | 1032 | 7 | 38,693 | 295,816 | 75,820 | 8,527 | .256 | 39,617 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,193 | 9,196 | 9,888 | .482 | -692 | 13 | 6 | 3 | 18 | 1810 | 29 | 84,390 | 654,813 | 171,810 | 11,821 | .262 | 87,630 | 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 | 9,843 | 4,743 | 5,092 | .482 | -349 | 6 | 5 | 2 | 10 | 1236 | 16 | 40,502 | 333,023 | 83,222 | 8,353 | .250 | 41,399 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 18,887 | 10,706 | 8,093 | .569 | 2613 | 20 | 40 | 27 | 58 | 1798 | 47 | 91,707 | 643,787 | 170,989 | 17,046 | .266 | 78,766 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,147 | 9,277 | 9,783 | .487 | -506 | 17 | 15 | 9 | 29 | 2097 | 41 | 84,577 | 648,997 | 167,147 | 13,929 | .258 | 87,481 | 3.99 |
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| | Also played as Kansas City Athletics and Philadelphia Athletics |
| | Philadelphia Athletics, see Oakland Athletics |
| 21 | Philadelphia Phillies | 1883 | 2024 | 21,520 | 10,135 | 11,270 | .473 | -1135 | 12 | 8 | 2 | 16 | 2180 | 37 | 95,499 | 736,338 | 191,755 | 13,985 | .260 | 101,318 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,670 | 10,778 | 10,752 | .501 | 26 | 9 | 9 | 5 | 17 | 2132 | 40 | 96,476 | 742,386 | 195,576 | 12,084 | .263 | 96,619 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,720 | 4,052 | 4,666 | .465 | -614 | 5 | 2 | 0 | 7 | 1148 | 13 | 35,269 | 294,769 | 73,429 | 7,067 | .249 | 38,213 | 3.97 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,595 | 11,476 | 9,956 | .535 | 1520 | 9 | 23 | 8 | 27 | 1935 | 57 | 99,888 | 737,101 | 194,030 | 15,391 | .263 | 92,475 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,422 | 3,532 | 3,888 | .476 | -356 | 3 | 0 | 0 | 5 | 999 | 7 | 32,961 | 253,333 | 65,258 | 7,515 | .258 | 34,677 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,710 | 11,217 | 10,341 | .520 | 876 | 15 | 23 | 11 | 32 | 2214 | 50 | 99,560 | 744,208 | 197,746 | 12,976 | .266 | 95,600 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,142 | 2,027 | 2,115 | .489 | -88 | 4 | 2 | 0 | 9 | 608 | 2 | 18,515 | 140,951 | 35,895 | 4,332 | .255 | 18,969 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 9,998 | 4,758 | 5,234 | .476 | -476 | 7 | 3 | 1 | 9 | 1249 | 10 | 45,088 | 341,439 | 88,217 | 10,005 | .258 | 47,092 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,424 | 3,703 | 3,718 | .499 | -15 | 6 | 2 | 2 | 10 | 921 | 10 | 34,388 | 254,455 | 66,253 | 8,089 | .260 | 33,964 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,709 | 4,210 | 4,495 | .484 | -285 | 5 | 1 | 1 | 6 | 1052 | 10 | 36,491 | 294,659 | 74,817 | 7,448 | .254 | 37,829 | 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