Bookmobiles in the U.S.
| 1950 | 603 | (highest states are North Carolina at 87, Missouri at 48, Ohio at 47) |
| 1989 | 921 | (highest states are Kentucky at 109, No. Carolina at 51, Ohio at 50) |
| 1990 | 1,102 | (highest states are Kentucky at 113 and California at 66) |
| 1991 | 1,125 | (highest states are Kentucky at 110 and California at 67) |
| 1992 | 1,066 | (highest states are Kentucky at 110 and California at 70) |
| 1993 | 1,035 | (highest states are Kentucky at 107 and California at 63) |
| 1994 | 997 | (highest states are Kentucky at 105 and Ohio at 60) |
| 1995 | 978 | (highest states are Kentucky at 103 and Ohio at 61) |
| 1996 | 966 | (highest states are Kentucky at 97 and Ohio at 63) |
| 1997 | 947 | (highest states are Kentucky at 97 and Ohio at 62) |
| 1998 | 933 | (highest states are Kentucky at 98 and Ohio at 64) |
| 1999 | 907 | (highest states are Kentucky at 94 and Ohio at 66) |
| 2000 | 884 | (highest states are Kentucky at 94 and Ohio at 66) |
| 2001 | 879 | (highest states are Kentucky at 94 and Ohio at 66) |
| 2002 | 873 | (highest states are Kentucky at 95 and Ohio at 66) |
| 2003 | 864 | (highest states are Kentucky at 98 and Ohio at 66) |
Sources: Except for 1950, these figures come from the annual report on Public Libraries in the United States: FY XXXX published by the National Center for Education Statistics. The statistics are on Table 2. The 1950 figures are from Table 14 in Public Library Statistics, Bulletin, 1953, No. 9 from the U.S. Department of Health, Education, and Welfare; Office of Education – the predecessor of NCES. We also checked reports from the same agency covering 1938-39, 1944-45, 1968, 1974, and 1977-78, but could not find comparable figures. State library data consulted for 2003 figure.