| | Anaheim Angels, see Los Angeles Angels |
| 1 | Arizona Diamondbacks | 1998 | 2024 | 4,268 | 2,085 | 2,183 | .489 | -98 | 5 | 2 | 1 | 7 | 616 | 2 | 19,483 | 145,640 | 37,109 | 4,540 | .255 | 19,776 | 4.28 |
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| 2 | Atlanta Braves | 1876 | 2024 | 22,212 | 11,111 | 10,947 | .504 | 164 | 23 | 18 | 4 | 29 | 2126 | 54 | 99,308 | 760,524 | 197,552 | 15,000 | .260 | 97,799 | 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 | 19,309 | 9,116 | 10,083 | .475 | -967 | 10 | 7 | 3 | 15 | 1985 | 34 | 83,389 | 655,915 | 169,289 | 14,372 | .258 | 88,777 | 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 | 19,297 | 9,954 | 9,260 | .518 | 694 | 10 | 14 | 9 | 25 | 1947 | 39 | 90,134 | 660,453 | 176,268 | 14,542 | .267 | 86,542 | 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 | 22,251 | 11,325 | 10,765 | .513 | 560 | 8 | 17 | 3 | 21 | 2247 | 46 | 102,420 | 761,445 | 199,434 | 15,182 | .262 | 98,893 | 3.70 |
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| | Also played as Chicago, Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2024 | 19,304 | 9,590 | 9,611 | .499 | -21 | 6 | 6 | 3 | 11 | 1906 | 34 | 83,897 | 653,729 | 169,801 | 12,243 | .260 | 84,006 | 3.80 |
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| 7 | Cincinnati Reds | 1882 | 2024 | 21,835 | 10,933 | 10,763 | .504 | 170 | 10 | 10 | 5 | 16 | 2169 | 37 | 97,994 | 744,017 | 193,887 | 14,272 | .261 | 97,254 | 3.77 |
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| | Also played as Cincinnati Redlegs and Cincinnati |
| 8 | Cleveland Guardians | 1901 | 2024 | 19,309 | 9,851 | 9,367 | .513 | 484 | 11 | 6 | 2 | 16 | 2006 | 35 | 87,321 | 658,199 | 174,287 | 13,864 | .265 | 85,082 | 3.83 |
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| | Also played as Cleveland Indians, Cleveland Naps, Cleveland Napoleons, Cleveland Blues and Cleveland |
| 9 | Colorado Rockies | 1993 | 2024 | 5,015 | 2,320 | 2,695 | .463 | -375 | 0 | 1 | 0 | 5 | 675 | 2 | 24,892 | 172,307 | 46,633 | 5,682 | .271 | 26,620 | 5.01 |
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| 10 | Detroit Tigers | 1901 | 2024 | 19,331 | 9,673 | 9,565 | .503 | 108 | 7 | 11 | 4 | 16 | 1806 | 24 | 88,742 | 659,268 | 174,192 | 14,517 | .264 | 88,518 | 4.00 |
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| 11 | Houston Astros | 1962 | 2024 | 9,976 | 5,007 | 4,964 | .502 | 43 | 13 | 5 | 2 | 17 | 1001 | 10 | 42,556 | 338,581 | 86,321 | 8,379 | .255 | 41,847 | 3.80 |
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| | Also played as Houston Colt .45s |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2024 | 8,828 | 4,205 | 4,621 | .476 | -416 | 8 | 4 | 2 | 9 | 1012 | 4 | 38,658 | 302,012 | 79,355 | 6,969 | .263 | 40,819 | 4.26 |
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| 13 | Los Angeles Angels | 1961 | 2024 | 10,134 | 5,021 | 5,110 | .496 | -89 | 9 | 1 | 1 | 10 | 1236 | 12 | 43,871 | 343,870 | 88,036 | 9,147 | .256 | 44,509 | 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 | 21,634 | 11,427 | 10,068 | .532 | 1359 | 21 | 25 | 7 | 37 | 1974 | 53 | 97,612 | 737,140 | 192,580 | 14,047 | .261 | 91,454 | 3.53 |
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| | Also played as Brooklyn Dodgers, Brooklyn Robins, Brooklyn Superbas, Brooklyn Grooms, Brooklyn and Brooklyn Bridegrooms |
| 15 | Miami Marlins | 1993 | 2024 | 5,007 | 2,299 | 2,708 | .459 | -409 | 0 | 2 | 2 | 4 | 760 | 5 | 21,055 | 170,156 | 43,350 | 4,559 | .255 | 23,230 | 4.30 |
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| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2024 | 8,837 | 4,305 | 4,528 | .487 | -223 | 6 | 1 | 0 | 9 | 1051 | 7 | 39,285 | 300,012 | 76,854 | 8,662 | .256 | 40,106 | 4.14 |
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| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2024 | 19,318 | 9,258 | 9,951 | .482 | -693 | 13 | 6 | 3 | 18 | 1822 | 29 | 84,961 | 659,047 | 172,866 | 11,966 | .262 | 88,201 | 4.00 |
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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 | 9,967 | 4,814 | 5,145 | .483 | -331 | 6 | 5 | 2 | 10 | 1252 | 16 | 41,109 | 337,244 | 84,278 | 8,522 | .250 | 41,931 | 3.80 |
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| 19 | New York Yankees | 1903 | 2024 | 19,009 | 10,776 | 8,145 | .570 | 2631 | 20 | 40 | 27 | 58 | 1810 | 47 | 92,332 | 647,918 | 172,022 | 17,234 | .265 | 79,285 | 3.65 |
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| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2024 | 19,270 | 9,328 | 9,855 | .486 | -527 | 17 | 15 | 9 | 29 | 2115 | 41 | 85,085 | 653,148 | 168,134 | 14,078 | .257 | 88,088 | 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 | 21,644 | 10,205 | 11,324 | .474 | -1119 | 12 | 8 | 2 | 16 | 2193 | 37 | 96,097 | 740,602 | 192,856 | 14,137 | .260 | 101,837 | 3.99 |
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| | Also played as Philadelphia Phils and Philadelphia |
| 22 | Pittsburgh Pirates | 1882 | 2024 | 21,793 | 10,836 | 10,817 | .500 | 19 | 9 | 9 | 5 | 17 | 2150 | 40 | 96,999 | 746,559 | 196,575 | 12,210 | .263 | 97,202 | 3.76 |
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| | Also played as Pittsburgh and Allegheny City |
| 23 | San Diego Padres | 1969 | 2024 | 8,841 | 4,125 | 4,714 | .467 | -589 | 5 | 2 | 0 | 7 | 1161 | 13 | 35,829 | 298,907 | 74,534 | 7,214 | .249 | 38,692 | 3.96 |
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| 24 | San Francisco Giants | 1883 | 2024 | 21,719 | 11,540 | 10,016 | .535 | 1524 | 9 | 23 | 8 | 27 | 1950 | 57 | 100,442 | 741,311 | 195,033 | 15,537 | .263 | 92,987 | 3.58 |
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| | Also played as New York Giants and New York |
| 25 | Seattle Mariners | 1977 | 2024 | 7,547 | 3,595 | 3,950 | .476 | -355 | 3 | 0 | 0 | 5 | 1013 | 7 | 33,495 | 257,451 | 66,186 | 7,658 | .257 | 35,166 | 4.29 |
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| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2024 | 21,834 | 11,282 | 10,400 | .520 | 882 | 15 | 23 | 11 | 32 | 2222 | 50 | 100,085 | 748,451 | 198,819 | 13,113 | .266 | 96,152 | 3.69 |
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| | Also played as St. Louis and St. Louis Browns |
| 27 | Tampa Bay Rays | 1998 | 2024 | 4,265 | 2,089 | 2,176 | .490 | -87 | 4 | 2 | 0 | 9 | 620 | 2 | 18,972 | 145,032 | 36,823 | 4,450 | .254 | 19,443 | 4.22 |
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| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2024 | 10,121 | 4,814 | 5,301 | .476 | -487 | 7 | 3 | 1 | 9 | 1262 | 10 | 45,581 | 345,580 | 89,184 | 10,137 | .258 | 47,678 | 4.29 |
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| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2024 | 7,548 | 3,760 | 3,785 | .498 | -25 | 6 | 2 | 2 | 10 | 937 | 10 | 34,926 | 258,646 | 67,283 | 8,213 | .260 | 34,526 | 4.22 |
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| 30 | Washington Nationals | 1969 | 2024 | 8,833 | 4,263 | 4,566 | .483 | -303 | 5 | 1 | 1 | 6 | 1063 | 10 | 36,998 | 298,774 | 75,827 | 7,550 | .254 | 38,429 | 3.95 |
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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