League Attendance
American League
| Year | Attendance | Teams | Per Team | Games | Per Game |
| 2010 | 0 | 14 | N/A | 0 | N/A |
| 2009 | 32,272,727 | 14 | N/A | 0 | N/A |
| 2008 | 34,540,540 | 14 | N/A | 0 | N/A |
| 2007 | 35,389,158 | 14 | N/A | 0 | N/A |
| 2006 | 34,465,295 | 14 | 2,461,807 | 1134 | 30,393 |
| 2005 | 33,270,923 | 14 | 2,376,495 | 1134 | 29,339 |
| 2004 | 32,798,075 | 14 | 2,342,720 | 1133 | 28,948 |
| 2003 | 30,906,711 | 14 | 2,207,622 | 1135 | 27,231 |
| 2002 | 30,918,426 | 14 | 2,208,459 | 1127 | 27,434 |
| 2001 | 32,853,727 | 14 | 2,346,695 | 1133 | 28,997 |
| 2000 | 31,675,798 | 14 | 2,262,557 | 1132 | 27,982 |
| 1999 | 31,816,532 | 14 | 2,272,609 | 1133 | 28,082 |
| 1998 | 32,174,363 | 14 | 2,298,169 | 1133 | 28,397 |
| 1997 | 31,283,321 | 14 | 2,234,523 | 1132 | 27,635 |
| 1996 | 29,718,093 | 14 | 2,122,721 | 1133 | 26,230 |
| 1995 | 25,358,988 | 14 | 1,811,356 | 1010 | 25,108 |
| 1994 | 24,202,197 | 14 | 1,728,728 | 797 | 30,367 |
| 1993 | 33,333,365 | 14 | 2,380,955 | 1134 | 29,395 |
| 1992 | 31,759,331 | 14 | 2,268,524 | 1134 | 28,006 |
| 1991 | 32,117,588 | 14 | 2,294,113 | 1134 | 28,322 |
| 1990 | 30,332,260 | 14 | 2,166,590 | 1133 | 26,772 |
| 1989 | 29,849,262 | 14 | 2,132,090 | 1133 | 26,345 |
| 1988 | 28,499,636 | 14 | 2,035,688 | 1131 | 25,199 |
| 1987 | 27,277,351 | 14 | 1,948,382 | 1134 | 24,054 |
| 1986 | 25,172,732 | 14 | 1,798,052 | 1134 | 22,198 |
| 1985 | 24,532,225 | 14 | 1,752,302 | 1132 | 21,672 |
| 1984 | 23,961,427 | 14 | 1,711,531 | 1134 | 21,130 |
| 1983 | 23,991,053 | 14 | 1,713,647 | 1135 | 21,137 |
| 1982 | 23,080,449 | 14 | 1,648,604 | 1135 | 20,335 |
| 1981 | 14,065,986 | 14 | 1,004,713 | 750 | 18,755 |
| 1980 | 21,890,052 | 14 | 1,563,575 | 1132 | 19,338 |
| 1979 | 22,371,979 | 14 | 1,597,999 | 1128 | 19,833 |
| 1978 | 20,529,965 | 14 | 1,466,426 | 1131 | 18,152 |
| 1977 | 19,639,551 | 14 | 1,402,825 | 1131 | 17,365 |
| 1976 | 14,657,802 | 12 | 1,221,484 | 967 | 15,158 |
| 1975 | 13,189,423 | 12 | 1,099,119 | 963 | 13,696 |
| 1974 | 13,047,294 | 12 | 1,087,275 | 973 | 13,409 |
| 1973 | 13,433,604 | 12 | 1,119,467 | 972 | 13,821 |
| 1972 | 11,438,538 | 12 | 953,212 | 929 | 12,313 |
| 1971 | 11,868,560 | 12 | 989,047 | 966 | 12,286 |
| 1970 | 12,085,135 | 12 | 1,007,095 | 973 | 12,420 |
| 1969 | 12,134,720 | 12 | 1,011,227 | 973 | 12,471 |
| 1968 | 11,317,387 | 10 | 1,131,739 | 812 | 13,938 |
| 1967 | 11,336,923 | 10 | 1,133,692 | 810 | 13,996 |
| 1966 | 10,166,738 | 10 | 1,016,674 | 806 | 12,614 |
| 1965 | 8,860,764 | 10 | 886,076 | 810 | 10,939 |
| 1964 | 9,235,151 | 10 | 923,515 | 814 | 11,345 |
| 1963 | 9,094,847 | 10 | 909,485 | 808 | 11,256 |
| 1962 | 10,015,056 | 10 | 1,001,506 | 809 | 12,380 |
| 1961 | 10,163,016 | 10 | 1,016,302 | 811 | 12,531 |
| 1960 | 9,226,526 | 8 | 1,153,316 | 617 | 14,954 |
| 1959 | 9,149,454 | 8 | 1,143,682 | 618 | 14,805 |
| 1958 | 7,296,034 | 8 | 912,004 | 619 | 11,787 |
| 1957 | 8,196,218 | 8 | 1,024,527 | 616 | 13,306 |
| 1956 | 7,893,683 | 8 | 986,710 | 618 | 12,773 |
| 1955 | 8,942,971 | 8 | 1,117,871 | 618 | 14,471 |
| 1954 | 7,922,364 | 8 | 990,296 | 621 | 12,757 |
| 1953 | 6,964,076 | 8 | 870,510 | 618 | 11,269 |
| 1952 | 8,293,896 | 8 | 1,036,737 | 621 | 13,356 |
| 1951 | 8,882,674 | 8 | 1,110,334 | 617 | 14,397 |
| 1950 | 9,142,361 | 8 | 1,142,795 | 620 | 14,746 |
| 1949 | 10,730,647 | 8 | 1,341,331 | 618 | 17,364 |
| 1948 | 11,150,099 | 8 | 1,393,762 | 618 | 18,042 |
| 1947 | 9,486,069 | 8 | 1,185,759 | 623 | 15,226 |
| 1946 | 9,621,182 | 8 | 1,202,648 | 621 | 15,493 |
| 1945 | 5,580,420 | 8 | 697,553 | 612 | 9,118 |
| 1944 | 4,798,158 | 8 | 599,770 | 619 | 7,751 |
| 1943 | 3,696,569 | 8 | 462,071 | 617 | 5,991 |
| 1942 | 4,200,216 | 8 | 525,027 | 611 | 6,874 |
| 1941 | 4,911,956 | 8 | 613,995 | 622 | 7,897 |
| 1940 | 5,433,791 | 8 | 679,224 | 619 | 8,778 |
| 1939 | 4,270,602 | 8 | 533,825 | 615 | 6,944 |
| 1938 | 4,445,684 | 8 | 555,711 | 613 | 7,252 |
| 1937 | 4,735,835 | 8 | 591,979 | 622 | 7,614 |
| 1936 | 4,178,922 | 8 | 522,365 | 618 | 6,762 |
| 1935 | 3,688,007 | 8 | 461,001 | 611 | 6,036 |
| 1934 | 3,763,606 | 8 | 470,451 | 615 | 6,120 |
| 1933 | 2,926,210 | 8 | 365,776 | 608 | 4,813 |
| 1932 | 3,133,232 | 8 | 391,654 | 615 | 5,095 |
| 1931 | 3,883,292 | 8 | 485,412 | 618 | 6,284 |
| 1930 | 4,685,730 | 8 | 585,716 | 616 | 7,607 |
| 1929 | 4,662,470 | 8 | 582,809 | 613 | 7,606 |
| 1928 | 4,221,188 | 8 | 527,649 | 617 | 6,841 |
| 1927 | 4,612,951 | 8 | 576,619 | 619 | 7,452 |
| 1926 | 4,912,583 | 8 | 614,073 | 616 | 7,975 |
| 1925 | 5,186,851 | 8 | 648,356 | 616 | 8,420 |
| 1924 | 5,255,439 | 8 | 656,930 | 617 | 8,518 |
| 1923 | 4,602,589 | 8 | 575,324 | 616 | 7,472 |
| 1922 | 4,874,355 | 8 | 609,294 | 618 | 7,887 |
| 1921 | 4,620,328 | 8 | 577,541 | 616 | 7,501 |
| 1920 | 5,084,300 | 8 | 635,538 | 617 | 8,240 |
| 1919 | 3,654,236 | 8 | 456,780 | 560 | 6,525 |
| 1918 | 1,707,999 | 8 | 213,500 | 508 | 3,362 |
| 1917 | 2,858,858 | 8 | 357,357 | 622 | 4,596 |
| 1916 | 3,451,885 | 8 | 431,486 | 625 | 5,523 |
| 1915 | 2,434,684 | 8 | 304,336 | 621 | 3,921 |
| 1914 | 2,747,591 | 8 | 343,449 | 631 | 4,354 |
| 1913 | 3,526,805 | 8 | 440,851 | 614 | 5,744 |
| 1912 | 3,263,631 | 8 | 407,954 | 619 | 5,272 |
| 1911 | 3,339,514 | 8 | 417,439 | 614 | 5,439 |
| 1910 | 3,270,689 | 8 | 408,836 | 628 | 5,208 |
| 1909 | 3,739,870 | 8 | 467,484 | 620 | 6,032 |
| 1908 | 3,611,366 | 8 | 451,421 | 622 | 5,806 |
| 1907 | 3,398,764 | 8 | 424,846 | 617 | 5,509 |
| 1906 | 2,938,076 | 8 | 367,260 | 613 | 4,793 |
| 1905 | 3,120,752 | 8 | 390,094 | 617 | 5,058 |
| 1904 | 3,024,028 | 8 | 378,004 | 626 | 4,831 |
| 1903 | 2,344,888 | 8 | 293,111 | 554 | 4,233 |
| 1902 | 2,206,454 | 8 | 275,807 | 553 | 3,990 |
| 1901 | 1,683,584 | 8 | 210,448 | 549 | 3,067 |
National League
| Year | Attendance | Teams | Per Team | Games | Per Game |
| 2010 | 0 | 16 | N/A | 0 | N/A |
| 2009 | 41,157,853 | 16 | N/A | 0 | N/A |
| 2008 | 44,083,775 | 16 | N/A | 0 | N/A |
| 2007 | 44,095,560 | 16 | N/A | 0 | N/A |
| 2006 | 41,578,607 | 16 | 2,598,663 | 1296 | 32,082 |
| 2005 | 41,644,345 | 16 | 2,602,772 | 1297 | 32,108 |
| 2004 | 40,224,897 | 16 | 2,514,056 | 1295 | 31,062 |
| 2003 | 36,723,341 | 16 | 2,295,209 | 1295 | 28,358 |
| 2002 | 37,025,963 | 16 | 2,314,123 | 1285 | 28,814 |
| 2001 | 39,727,374 | 16 | 2,482,961 | 1296 | 30,654 |
| 2000 | 39,683,109 | 16 | 2,480,194 | 1297 | 30,596 |
| 1999 | 38,322,848 | 16 | 2,395,178 | 1295 | 29,593 |
| 1998 | 38,426,784 | 16 | 2,401,674 | 1297 | 29,627 |
| 1997 | 31,885,368 | 14 | 2,277,526 | 1134 | 28,118 |
| 1996 | 30,379,288 | 14 | 2,169,949 | 1134 | 26,789 |
| 1995 | 25,110,248 | 14 | 1,793,589 | 1007 | 24,936 |
| 1994 | 25,807,819 | 14 | 1,843,416 | 803 | 32,139 |
| 1993 | 36,924,573 | 14 | 2,637,470 | 1135 | 32,533 |
| 1992 | 24,111,135 | 12 | 2,009,261 | 972 | 24,806 |
| 1991 | 24,696,172 | 12 | 2,058,014 | 970 | 25,460 |
| 1990 | 24,491,508 | 12 | 2,040,959 | 972 | 25,197 |
| 1989 | 25,323,834 | 12 | 2,110,320 | 973 | 26,027 |
| 1988 | 24,499,268 | 12 | 2,041,606 | 969 | 25,283 |
| 1987 | 24,734,155 | 12 | 2,061,180 | 971 | 25,473 |
| 1986 | 22,333,471 | 12 | 1,861,123 | 969 | 23,048 |
| 1985 | 22,292,154 | 12 | 1,857,680 | 971 | 22,958 |
| 1984 | 20,781,436 | 12 | 1,731,786 | 971 | 21,402 |
| 1983 | 21,549,285 | 12 | 1,795,774 | 974 | 22,125 |
| 1982 | 21,507,425 | 12 | 1,792,285 | 972 | 22,127 |
| 1981 | 12,478,390 | 12 | 1,039,866 | 644 | 19,376 |
| 1980 | 21,124,084 | 12 | 1,760,340 | 973 | 21,710 |
| 1979 | 21,178,419 | 12 | 1,764,868 | 971 | 21,811 |
| 1978 | 20,106,921 | 12 | 1,675,577 | 971 | 20,707 |
| 1977 | 19,070,228 | 12 | 1,589,186 | 972 | 19,620 |
| 1976 | 16,660,529 | 12 | 1,388,377 | 972 | 17,140 |
| 1975 | 16,600,490 | 12 | 1,383,374 | 971 | 17,096 |
| 1974 | 16,978,314 | 12 | 1,414,860 | 972 | 17,467 |
| 1973 | 16,675,322 | 12 | 1,389,610 | 971 | 17,173 |
| 1972 | 15,529,730 | 12 | 1,294,144 | 930 | 16,699 |
| 1971 | 17,324,857 | 12 | 1,443,738 | 972 | 17,824 |
| 1970 | 16,662,198 | 12 | 1,388,517 | 971 | 17,160 |
| 1969 | 15,094,946 | 12 | 1,257,912 | 973 | 15,514 |
| 1968 | 11,785,358 | 10 | 1,178,536 | 813 | 14,496 |
| 1967 | 12,971,430 | 10 | 1,297,143 | 810 | 16,014 |
| 1966 | 15,015,471 | 10 | 1,501,547 | 809 | 18,561 |
| 1965 | 13,581,136 | 10 | 1,358,114 | 813 | 16,705 |
| 1964 | 12,045,190 | 10 | 1,204,519 | 812 | 14,834 |
| 1963 | 11,382,227 | 10 | 1,138,223 | 811 | 14,035 |
| 1962 | 11,360,159 | 10 | 1,136,016 | 812 | 13,990 |
| 1961 | 8,731,502 | 8 | 1,091,438 | 619 | 14,106 |
| 1960 | 10,684,963 | 8 | 1,335,620 | 619 | 17,262 |
| 1959 | 9,994,525 | 8 | 1,249,316 | 620 | 16,120 |
| 1958 | 10,164,596 | 8 | 1,270,575 | 616 | 16,501 |
| 1957 | 8,819,601 | 8 | 1,102,450 | 619 | 14,248 |
| 1956 | 8,649,567 | 8 | 1,081,196 | 621 | 13,928 |
| 1955 | 7,674,412 | 8 | 959,302 | 616 | 12,458 |
| 1954 | 8,013,519 | 8 | 1,001,690 | 616 | 13,009 |
| 1953 | 7,419,721 | 8 | 927,465 | 622 | 11,929 |
| 1952 | 6,339,148 | 8 | 792,394 | 618 | 10,258 |
| 1951 | 7,244,002 | 8 | 905,500 | 622 | 11,646 |
| 1950 | 8,320,616 | 8 | 1,040,077 | 618 | 13,464 |
| 1949 | 9,484,718 | 8 | 1,185,590 | 622 | 15,249 |
| 1948 | 9,770,743 | 8 | 1,221,343 | 619 | 15,785 |
| 1947 | 10,388,470 | 8 | 1,298,559 | 620 | 16,756 |
| 1946 | 8,902,107 | 8 | 1,112,763 | 621 | 14,335 |
| 1945 | 5,260,703 | 8 | 657,588 | 618 | 8,512 |
| 1944 | 3,974,588 | 8 | 496,824 | 623 | 6,380 |
| 1943 | 3,769,342 | 8 | 471,168 | 621 | 6,070 |
| 1942 | 4,353,353 | 8 | 544,169 | 613 | 7,102 |
| 1941 | 4,777,647 | 8 | 597,206 | 622 | 7,681 |
| 1940 | 4,389,693 | 8 | 548,712 | 617 | 7,115 |
| 1939 | 4,707,177 | 8 | 588,397 | 616 | 7,642 |
| 1938 | 4,560,827 | 8 | 570,103 | 610 | 7,477 |
| 1937 | 4,204,228 | 8 | 525,529 | 617 | 6,814 |
| 1936 | 3,903,691 | 8 | 487,961 | 620 | 6,296 |
| 1935 | 3,657,309 | 8 | 457,164 | 617 | 5,928 |
| 1934 | 3,200,105 | 8 | 400,013 | 608 | 5,263 |
| 1933 | 3,162,821 | 8 | 395,353 | 618 | 5,118 |
| 1932 | 3,841,334 | 8 | 480,167 | 618 | 6,216 |
| 1931 | 4,583,815 | 8 | 572,977 | 618 | 7,417 |
| 1930 | 5,446,532 | 8 | 680,817 | 618 | 8,813 |
| 1929 | 4,925,713 | 8 | 615,714 | 616 | 7,996 |
| 1928 | 4,881,097 | 8 | 610,137 | 614 | 7,950 |
| 1927 | 5,309,917 | 8 | 663,740 | 617 | 8,606 |
| 1926 | 4,920,399 | 8 | 615,050 | 618 | 7,962 |
| 1925 | 4,353,704 | 8 | 544,213 | 612 | 7,114 |
| 1924 | 4,340,644 | 8 | 542,581 | 614 | 7,069 |
| 1923 | 4,069,817 | 8 | 508,727 | 617 | 6,596 |
| 1922 | 3,941,820 | 8 | 492,728 | 620 | 6,358 |
| 1921 | 3,986,984 | 8 | 498,373 | 613 | 6,504 |
| 1920 | 4,036,575 | 8 | 504,572 | 617 | 6,542 |
| 1919 | 2,878,203 | 8 | 359,775 | 558 | 5,158 |
| 1918 | 1,372,127 | 8 | 171,516 | 508 | 2,701 |
| 1917 | 2,361,136 | 8 | 295,142 | 625 | 3,778 |
| 1916 | 3,051,634 | 8 | 381,454 | 622 | 4,906 |
| 1915 | 2,430,142 | 8 | 303,768 | 624 | 3,894 |
| 1914 | 1,707,397 | 8 | 213,425 | 625 | 2,732 |
| 1913 | 2,831,531 | 8 | 353,941 | 620 | 4,567 |
| 1912 | 2,735,759 | 8 | 341,970 | 613 | 4,463 |
| 1911 | 3,231,768 | 8 | 403,971 | 623 | 5,187 |
| 1910 | 2,935,758 | 8 | 366,970 | 621 | 4,727 |
| 1909 | 3,496,420 | 8 | 437,053 | 620 | 5,639 |
| 1908 | 3,512,108 | 8 | 439,014 | 622 | 5,646 |
| 1907 | 2,640,220 | 8 | 330,028 | 616 | 4,286 |
| 1906 | 2,781,213 | 8 | 347,652 | 615 | 4,522 |
| 1905 | 2,734,310 | 8 | 341,789 | 620 | 4,410 |
| 1904 | 2,664,271 | 8 | 333,034 | 623 | 4,277 |
| 1903 | 2,390,362 | 8 | 298,795 | 560 | 4,269 |
| 1902 | 1,683,012 | 8 | 210,377 | 562 | 2,995 |
| 1901 | 1,920,031 | 8 | 240,004 | 561 | 3,423 |
| 1900 | 1,829,490 | 8 | N/A | 0 | N/A |
| 1899 | 2,541,485 | 12 | N/A | 0 | N/A |
| 1898 | 2,372,089 | 12 | N/A | 0 | N/A |
| 1897 | 2,886,842 | 12 | N/A | 0 | N/A |
| 1896 | 2,900,973 | 12 | N/A | 0 | N/A |
| 1895 | 2,889,271 | 12 | N/A | 0 | N/A |
| 1894 | 2,427,573 | 12 | N/A | 0 | N/A |
| 1893 | 2,224,752 | 12 | N/A | 0 | N/A |
| 1892 | 1,822,587 | 12 | N/A | 0 | N/A |
| 1891 | 1,332,730 | 8 | N/A | 0 | N/A |
| 1890 | 776,042 | 8 | N/A | 0 | N/A |
| 1889 | 0 | 8 | N/A | 0 | N/A |
| 1888 | 0 | 8 | N/A | 0 | N/A |
| 1887 | 0 | 8 | N/A | 0 | N/A |
| 1886 | 0 | 8 | N/A | 0 | N/A |
| 1885 | 0 | 8 | N/A | 0 | N/A |
| 1884 | 0 | 8 | N/A | 0 | N/A |
| 1883 | 0 | 8 | N/A | 0 | N/A |
| 1882 | 0 | 8 | N/A | 0 | N/A |
| 1881 | 0 | 8 | N/A | 0 | N/A |
| 1880 | 0 | 8 | N/A | 0 | N/A |
| 1879 | 0 | 8 | N/A | 0 | N/A |
| 1878 | 0 | 6 | N/A | 0 | N/A |
| 1877 | 0 | 6 | N/A | 0 | N/A |
| 1876 | 0 | 8 | N/A | 0 | N/A |