| | 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 | 196,540 | 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 | 22,128 | 11,265 | 10,702 | .513 | 563 | 8 | 17 | 3 | 21 | 2233 | 46 | 101,862 | 757,288 | 198,415 | 15,050 | .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 | 19,181 | 9,561 | 9,517 | .501 | 44 | 6 | 6 | 3 | 11 | 1888 | 34 | 83,515 | 649,626 | 168,886 | 12,139 | .260 | 83,387 | 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 | 19,185 | 9,782 | 9,312 | .512 | 470 | 11 | 6 | 2 | 16 | 1992 | 35 | 86,791 | 654,131 | 173,322 | 13,717 | .265 | 84,597 | 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 | 19,208 | 9,608 | 9,507 | .503 | 101 | 7 | 11 | 4 | 16 | 1793 | 24 | 88,213 | 655,117 | 173,211 | 14,387 | .264 | 88,023 | 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 | 8,706 | 4,142 | 4,562 | .476 | -420 | 8 | 4 | 2 | 9 | 1000 | 4 | 38,099 | 297,902 | 78,313 | 6,837 | .263 | 40,303 | 4.27 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,011 | 4,970 | 5,038 | .497 | -68 | 9 | 1 | 1 | 10 | 1216 | 12 | 43,388 | 339,833 | 87,124 | 9,020 | .256 | 43,925 | 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 | 21,513 | 11,357 | 10,017 | .531 | 1340 | 21 | 25 | 7 | 37 | 1956 | 53 | 97,004 | 733,043 | 191,554 | 13,869 | .261 | 90,914 | 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 | 4,886 | 2,251 | 2,635 | .461 | -384 | 0 | 2 | 2 | 4 | 737 | 5 | 20,592 | 166,048 | 42,340 | 4,441 | .255 | 22,615 | 4.29 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,713 | 4,235 | 4,474 | .486 | -239 | 6 | 1 | 0 | 9 | 1032 | 7 | 38,693 | 295,848 | 75,825 | 8,527 | .256 | 39,622 | 4.15 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,194 | 9,196 | 9,889 | .482 | -693 | 13 | 6 | 3 | 18 | 1810 | 29 | 84,392 | 654,849 | 171,819 | 11,822 | .262 | 87,639 | 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 | 9,844 | 4,743 | 5,093 | .482 | -350 | 6 | 5 | 2 | 10 | 1236 | 16 | 40,508 | 333,062 | 83,230 | 8,354 | .250 | 41,406 | 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 | 19,148 | 9,277 | 9,784 | .487 | -507 | 17 | 15 | 9 | 29 | 2097 | 41 | 84,580 | 649,029 | 167,152 | 13,929 | .258 | 87,493 | 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 | 21,521 | 10,136 | 11,270 | .474 | -1134 | 12 | 8 | 2 | 16 | 2180 | 37 | 95,504 | 736,373 | 191,764 | 13,986 | .260 | 101,322 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,671 | 10,779 | 10,752 | .501 | 27 | 9 | 9 | 5 | 17 | 2132 | 40 | 96,481 | 742,419 | 195,585 | 12,085 | .263 | 96,622 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,721 | 4,052 | 4,667 | .465 | -615 | 5 | 2 | 0 | 7 | 1148 | 13 | 35,273 | 294,807 | 73,441 | 7,068 | .249 | 38,224 | 3.97 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,596 | 11,476 | 9,957 | .535 | 1519 | 9 | 23 | 8 | 27 | 1936 | 57 | 99,892 | 737,134 | 194,037 | 15,393 | .263 | 92,480 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,423 | 3,533 | 3,888 | .476 | -355 | 3 | 0 | 0 | 5 | 999 | 7 | 32,966 | 253,368 | 65,268 | 7,517 | .258 | 34,681 | 4.30 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,711 | 11,217 | 10,342 | .520 | 875 | 15 | 23 | 11 | 32 | 2214 | 50 | 99,561 | 744,239 | 197,750 | 12,977 | .266 | 95,605 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,143 | 2,028 | 2,115 | .490 | -87 | 4 | 2 | 0 | 9 | 608 | 2 | 18,522 | 140,985 | 35,904 | 4,333 | .255 | 18,975 | 4.24 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 9,999 | 4,759 | 5,234 | .476 | -475 | 7 | 3 | 1 | 9 | 1249 | 10 | 45,091 | 341,475 | 88,225 | 10,006 | .258 | 47,094 | 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