| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,145 | 2,013 | 2,132 | .486 | -119 | 5 | 2 | 1 | 7 | 606 | 2 | 18,794 | 141,433 | 35,987 | 4,366 | .254 | 19,170 | 4.27 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,087 | 11,045 | 10,888 | .504 | 157 | 23 | 18 | 4 | 29 | 2111 | 54 | 98,784 | 756,313 | 196,539 | 14,824 | .260 | 97,334 | 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 | 19,186 | 9,052 | 10,024 | .475 | -972 | 10 | 7 | 3 | 15 | 1964 | 34 | 82,815 | 651,713 | 168,253 | 14,198 | .258 | 88,226 | 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 | 19,174 | 9,893 | 9,198 | .518 | 695 | 10 | 14 | 9 | 25 | 1933 | 39 | 89,552 | 656,195 | 175,183 | 14,387 | .267 | 85,932 | 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 | 22,129 | 11,265 | 10,703 | .513 | 562 | 8 | 17 | 3 | 21 | 2233 | 46 | 101,865 | 757,322 | 198,422 | 15,052 | .262 | 98,392 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,182 | 9,561 | 9,518 | .501 | 43 | 6 | 6 | 3 | 11 | 1888 | 34 | 83,517 | 649,658 | 168,890 | 12,140 | .260 | 83,395 | 3.79 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,711 | 10,873 | 10,699 | .504 | 174 | 10 | 10 | 5 | 16 | 2146 | 37 | 97,452 | 739,914 | 192,909 | 14,130 | .261 | 96,717 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,186 | 9,783 | 9,312 | .512 | 471 | 11 | 6 | 2 | 16 | 1993 | 35 | 86,793 | 654,160 | 173,329 | 13,718 | .265 | 84,598 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 4,892 | 2,268 | 2,624 | .464 | -356 | 0 | 1 | 0 | 5 | 660 | 2 | 24,352 | 168,156 | 45,625 | 5,534 | .271 | 25,930 | 5.01 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,209 | 9,608 | 9,508 | .503 | 100 | 7 | 11 | 4 | 16 | 1793 | 24 | 88,214 | 655,149 | 173,217 | 14,388 | .264 | 88,025 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,852 | 4,933 | 4,914 | .501 | 19 | 13 | 5 | 2 | 17 | 986 | 10 | 41,977 | 334,333 | 85,204 | 8,230 | .255 | 41,382 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,707 | 4,143 | 4,562 | .476 | -419 | 8 | 4 | 2 | 9 | 1000 | 4 | 38,102 | 297,928 | 78,318 | 6,838 | .263 | 40,305 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,012 | 4,970 | 5,039 | .497 | -69 | 9 | 1 | 1 | 10 | 1216 | 12 | 43,389 | 339,863 | 87,129 | 9,021 | .256 | 43,929 | 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 | 21,514 | 11,358 | 10,017 | .531 | 1341 | 21 | 25 | 7 | 37 | 1956 | 53 | 97,010 | 733,075 | 191,563 | 13,873 | .261 | 90,917 | 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 | 4,887 | 2,251 | 2,636 | .461 | -385 | 0 | 2 | 2 | 4 | 737 | 5 | 20,595 | 166,081 | 42,347 | 4,442 | .255 | 22,621 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,714 | 4,235 | 4,475 | .486 | -240 | 6 | 1 | 0 | 9 | 1032 | 7 | 38,695 | 295,876 | 75,828 | 8,528 | .256 | 39,625 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,195 | 9,197 | 9,889 | .482 | -692 | 13 | 6 | 3 | 18 | 1810 | 29 | 84,395 | 654,877 | 171,824 | 11,822 | .262 | 87,640 | 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 | 9,845 | 4,744 | 5,093 | .482 | -349 | 6 | 5 | 2 | 10 | 1236 | 16 | 40,512 | 333,096 | 83,240 | 8,355 | .250 | 41,409 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 18,888 | 10,707 | 8,093 | .570 | 2614 | 20 | 40 | 27 | 58 | 1798 | 47 | 91,712 | 643,817 | 170,998 | 17,047 | .266 | 78,768 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,149 | 9,277 | 9,785 | .487 | -508 | 17 | 15 | 9 | 29 | 2097 | 41 | 84,582 | 649,061 | 167,159 | 13,929 | .258 | 87,497 | 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 | 21,522 | 10,137 | 11,270 | .474 | -1133 | 12 | 8 | 2 | 16 | 2180 | 37 | 95,510 | 736,407 | 191,774 | 13,988 | .260 | 101,323 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,672 | 10,780 | 10,752 | .501 | 28 | 9 | 9 | 5 | 17 | 2132 | 40 | 96,485 | 742,448 | 195,591 | 12,086 | .263 | 96,623 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,722 | 4,053 | 4,667 | .465 | -614 | 5 | 2 | 0 | 7 | 1149 | 13 | 35,279 | 294,842 | 73,452 | 7,068 | .249 | 38,227 | 3.97 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,597 | 11,476 | 9,958 | .535 | 1518 | 9 | 23 | 8 | 27 | 1937 | 57 | 99,893 | 737,165 | 194,042 | 15,393 | .263 | 92,486 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,424 | 3,533 | 3,889 | .476 | -356 | 3 | 0 | 0 | 5 | 999 | 7 | 32,967 | 253,397 | 65,271 | 7,517 | .258 | 34,684 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,712 | 11,217 | 10,343 | .520 | 874 | 15 | 23 | 11 | 32 | 2214 | 50 | 99,564 | 744,273 | 197,758 | 12,977 | .266 | 95,609 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,144 | 2,029 | 2,115 | .490 | -86 | 4 | 2 | 0 | 9 | 609 | 2 | 18,530 | 141,021 | 35,917 | 4,334 | .255 | 18,977 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,000 | 4,760 | 5,234 | .476 | -474 | 7 | 3 | 1 | 9 | 1249 | 10 | 45,095 | 341,508 | 88,229 | 10,007 | .258 | 47,096 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,425 | 3,703 | 3,719 | .499 | -16 | 6 | 2 | 2 | 10 | 921 | 10 | 34,396 | 254,492 | 66,263 | 8,090 | .260 | 33,975 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,710 | 4,211 | 4,495 | .484 | -284 | 5 | 1 | 1 | 6 | 1052 | 10 | 36,502 | 294,694 | 74,828 | 7,451 | .254 | 37,837 | 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