| | Anaheim Angels, see Los Angeles Angels of Anaheim |
| 1 | Arizona Diamondbacks | 1998 | 2017 | 3,170 | 1,556 | 1,614 | .491 | -58 | 5 | 1 | 1 | 5 | 443 | 2 | 14,360 | 108,521 | 28,032 | 3,291 | .258 | 14,630 | 4.24 |
| 2 | Atlanta Braves | 1876 | 2017 | 21,114 | 10,483 | 10,477 | .500 | 6 | 17 | 17 | 3 | 23 | 1957 | 51 | 93,825 | 723,059 | 187,948 | 13,404 | .260 | 93,173 | 3.65 |
| | Also played as Milwaukee Braves, Boston Braves, Boston Bees, Boston Rustlers, Boston Doves, Boston Beaneaters and Boston Red Stockings |
| 3 | Baltimore Orioles | 1901 | 2017 | 18,211 | 8,634 | 9,467 | .477 | -833 | 9 | 7 | 3 | 14 | 1795 | 29 | 78,530 | 618,581 | 160,094 | 13,011 | .259 | 83,268 | 4.01 |
| | Also played as St. Louis Browns and Milwaukee Brewers |
| | Boston Braves, see Atlanta Braves |
| 4 | Boston Red Sox | 1901 | 2017 | 18,200 | 9,369 | 8,748 | .517 | 621 | 8 | 13 | 8 | 22 | 1778 | 36 | 84,640 | 622,475 | 166,366 | 13,185 | .267 | 81,382 | 3.90 |
| | Also played as Boston Americans |
| | Brooklyn Dodgers, see Los Angeles Dodgers |
| | California Angels, see Los Angeles Angels of Anaheim |
| 5 | Chicago Cubs | 1876 | 2017 | 21,151 | 10,757 | 10,233 | .512 | 524 | 6 | 17 | 3 | 18 | 2043 | 44 | 97,277 | 724,464 | 190,286 | 13,856 | .263 | 94,056 | 3.68 |
| | Also played as Chicago Orphans, Chicago Colts and Chicago White Stockings |
| 6 | Chicago White Sox | 1901 | 2017 | 18,206 | 9,120 | 8,983 | .504 | 137 | 5 | 6 | 3 | 9 | 1733 | 30 | 79,324 | 616,510 | 160,607 | 11,063 | .261 | 78,709 | 3.76 |
| 7 | Cincinnati Reds | 1882 | 2017 | 20,736 | 10,428 | 10,169 | .506 | 259 | 10 | 10 | 5 | 15 | 1961 | 35 | 93,125 | 707,351 | 184,992 | 12,940 | .262 | 92,023 | 3.73 |
| | Also played as Cincinnati Redlegs and Cincinnati Red Stockings |
| 8 | Cleveland Indians | 1901 | 2017 | 18,209 | 9,238 | 8,880 | .510 | 358 | 8 | 6 | 2 | 12 | 1851 | 31 | 82,320 | 621,139 | 165,081 | 12,623 | .266 | 80,700 | 3.84 |
| | Also played as Cleveland Naps, Cleveland Bronchos and Cleveland Blues |
| 9 | Colorado Rockies | 1993 | 2017 | 3,920 | 1,837 | 2,083 | .469 | -246 | 0 | 1 | 0 | 3 | 548 | 0 | 19,836 | 135,045 | 37,158 | 4,431 | .275 | 20,737 | 4.98 |
| 10 | Detroit Tigers | 1901 | 2017 | 18,235 | 9,212 | 8,930 | .508 | 282 | 7 | 11 | 4 | 16 | 1650 | 22 | 84,397 | 622,322 | 165,352 | 13,480 | .266 | 83,215 | 3.97 |
| 11 | Houston Astros | 1962 | 2017 | 8,878 | 4,352 | 4,521 | .490 | -169 | 7 | 1 | 0 | 10 | 880 | 10 | 37,051 | 301,124 | 76,560 | 6,885 | .254 | 37,565 | 3.82 |
| | Also played as Houston Colt .45's |
| | Kansas City Athletics, see Oakland Athletics |
| 12 | Kansas City Royals | 1969 | 2017 | 7,729 | 3,749 | 3,978 | .485 | -229 | 8 | 4 | 2 | 9 | 849 | 4 | 34,026 | 264,987 | 70,167 | 5,868 | .265 | 35,360 | 4.19 |
| 13 | Los Angeles Angels of Anaheim | 1961 | 2017 | 9,040 | 4,523 | 4,514 | .500 | 9 | 9 | 1 | 1 | 10 | 1014 | 10 | 39,055 | 307,063 | 79,164 | 7,766 | .258 | 39,234 | 3.94 |
| | Also played as Anaheim Angels, California Angels and Los Angeles Angels |
| 14 | Los Angeles Dodgers | 1884 | 2017 | 20,537 | 10,736 | 9,662 | .526 | 1074 | 15 | 22 | 6 | 30 | 1803 | 49 | 91,894 | 699,904 | 183,166 | 12,404 | .262 | 87,298 | 3.53 |
| | Also played as Brooklyn Dodgers, Brooklyn Robins, Brooklyn Superbas, Brooklyn Bridegrooms, Brooklyn Grooms, Brooklyn Grays and Brooklyn Atlantics |
| 15 | Miami Marlins | 1993 | 2017 | 3,909 | 1,834 | 2,075 | .469 | -241 | 0 | 2 | 2 | 2 | 538 | 4 | 16,752 | 133,177 | 34,394 | 3,522 | .258 | 18,012 | 4.26 |
| | Also played as Florida Marlins |
| | Milwaukee Braves, see Atlanta Braves |
| 16 | Milwaukee Brewers | 1969 | 2017 | 7,741 | 3,694 | 4,043 | .477 | -349 | 3 | 1 | 0 | 4 | 857 | 5 | 34,300 | 263,270 | 67,979 | 7,286 | .258 | 35,553 | 4.19 |
| | Also played as Seattle Pilots |
| | Milwaukee Brewers (1901), see Baltimore Orioles |
| 17 | Minnesota Twins | 1901 | 2017 | 18,220 | 8,685 | 9,426 | .480 | -741 | 10 | 6 | 3 | 14 | 1641 | 23 | 79,690 | 621,705 | 163,496 | 10,483 | .263 | 83,270 | 3.98 |
| | Also played as Washington Senators |
| | Montreal Expos, see Washington Nationals |
| | New York Giants, see San Francisco Giants |
| 18 | New York Mets | 1962 | 2017 | 8,867 | 4,256 | 4,603 | .480 | -347 | 6 | 5 | 2 | 9 | 1032 | 15 | 36,178 | 300,265 | 75,125 | 7,171 | .250 | 37,113 | 3.76 |
| 19 | New York Yankees | 1903 | 2017 | 17,910 | 10,131 | 7,691 | .568 | 2440 | 18 | 40 | 27 | 52 | 1652 | 42 | 86,876 | 611,094 | 162,946 | 15,536 | .267 | 74,760 | 3.65 |
| | Also played as New York Highlanders |
| 20 | Oakland Athletics | 1901 | 2017 | 18,173 | 8,801 | 9,285 | .487 | -484 | 16 | 15 | 9 | 26 | 1927 | 40 | 80,288 | 616,433 | 159,451 | 12,720 | .259 | 83,029 | 3.98 |
| | Also played as Kansas City Athletics and Philadelphia Athletics |
| | Philadelphia Athletics, see Oakland Athletics |
| 21 | Philadelphia Phillies | 1883 | 2017 | 20,544 | 9,628 | 10,801 | .471 | -1173 | 12 | 7 | 2 | 14 | 2023 | 33 | 90,953 | 703,375 | 183,583 | 12,756 | .261 | 96,868 | 3.97 |
| | Also played as Philadelphia Quakers |
| 22 | Pittsburgh Pirates | 1882 | 2017 | 20,697 | 10,363 | 10,194 | .504 | 169 | 9 | 9 | 5 | 17 | 1938 | 40 | 92,513 | 709,794 | 187,703 | 11,177 | .264 | 91,820 | 3.71 |
| | Also played as Pittsburgh Alleghenys |
| 23 | San Diego Padres | 1969 | 2017 | 7,743 | 3,580 | 4,161 | .462 | -581 | 5 | 2 | 0 | 5 | 968 | 11 | 31,000 | 262,080 | 65,536 | 5,932 | .250 | 33,868 | 3.94 |
| 24 | San Francisco Giants | 1883 | 2017 | 20,622 | 10,986 | 9,473 | .537 | 1513 | 8 | 23 | 8 | 26 | 1753 | 57 | 95,711 | 704,240 | 186,084 | 14,331 | .264 | 88,227 | 3.56 |
| | Also played as New York Giants and New York Gothams |
| 25 | Seattle Mariners | 1977 | 2017 | 6,450 | 3,030 | 3,418 | .470 | -388 | 3 | 0 | 0 | 4 | 787 | 5 | 28,704 | 220,705 | 57,498 | 6,306 | .261 | 30,307 | 4.32 |
| | Seattle Pilots, see Milwaukee Brewers |
| | St. Louis Browns, see Baltimore Orioles |
| 26 | St. Louis Cardinals | 1882 | 2017 | 20,738 | 10,700 | 9,886 | .520 | 814 | 13 | 23 | 11 | 28 | 2085 | 44 | 95,133 | 711,681 | 189,716 | 11,797 | .267 | 91,428 | 3.67 |
| | Also played as St. Louis Perfectos, St. Louis Browns and St. Louis Brown Stockings |
| 27 | Tampa Bay Rays | 1998 | 2017 | 3,169 | 1,469 | 1,700 | .464 | -231 | 2 | 1 | 0 | 4 | 427 | 1 | 13,970 | 108,007 | 27,722 | 3,176 | .257 | 15,052 | 4.41 |
| | Also played as Tampa Bay Devil Rays |
| 28 | Texas Rangers | 1961 | 2017 | 9,023 | 4,322 | 4,695 | .479 | -373 | 7 | 2 | 0 | 8 | 1072 | 6 | 40,597 | 308,494 | 80,193 | 8,796 | .260 | 42,248 | 4.24 |
| | Also played as Washington Senators |
| 29 | Toronto Blue Jays | 1977 | 2017 | 6,449 | 3,209 | 3,237 | .498 | -28 | 6 | 2 | 2 | 7 | 731 | 6 | 29,850 | 221,348 | 57,939 | 6,758 | .262 | 29,490 | 4.21 |
| 30 | Washington Nationals | 1969 | 2017 | 7,735 | 3,760 | 3,971 | .486 | -211 | 4 | 0 | 0 | 4 | 896 | 7 | 32,092 | 261,878 | 66,461 | 6,383 | .254 | 33,193 | 3.87 |
| | Also played as Montreal Expos |
| | Washington Senators (1901-1960), see Minnesota Twins |
| | Washington Senators (1961-1971), see Texas Rangers |
Earlier Franchises