| municipal | government ordinance city | special ward | town | village | total | prefecture | |
| number of local governments | 725 | 14 | 23 | 1,318 | 338 | 2,418 | 47 |
| number of local governments that have library services | 711 | 14 | 23 | 707 | 65 | 1,520 | 47 |
| Percentage | 98.1% | 100% | 100% | 53.6% | 19.2% | 62.9% | 100% |
| number of libraries * | 1,630 | 197 | 213 | 759 | 68 | 2,867 | 62 |
| population per each library | 47,190 | 108,173 | 38,216 | 15,349 | 6,912 | 41,329 | 2,045,484 |
| fiscal year | number of libraries | budget for materials | per each library | prefecture % | |
| 1990 | 1,898 | 2,640,745 | 1,391 | 357,265 | 13.5 |
| 1991 | 1,955 | 2,927,318 | 1,497 | 357,326 | 12.2 |
| 1992 | 2,011 | 3,129,312 | 1,556 | 438,972 | 14 |
| 1993 | 2,091 | 3,381,606 | 1,617 | 451,446 | 13.3 |
| 1994 | 2,180 | 3,393,226 | 1,557 | 447,334 | 13.2 |
| 1995 | 2,270 | 3,497,602 | 1,541 | 452,333 | 12.9 |
| 1996 | 2,336 | 3,594,158 | 1,539 | 434,937 | 12.1 |
| 1997 | 2,423 | 3,625,861 | 1,496 | 450,150 | 12.4 |
| 1998 | 2,499 | 3,648,930 | 1,460 | 428,179 | 11.7 |
| 1999 | 2,560 | 3,676,344 | 1,436 | 406,936 | 11.1 |
| 2000 | 2,613 | 3,615,654 | 1,384 | 385,097 | 10.6 |
| 2001 | 2,655 | 3,535,152 | 1,332 | 372,270 | 10.5 |
| 2002 | 2,686 | 3,491,479 | 1,300 | 365,532 | 10.5 |
| 2003 | 2,735 | 3,348,285 | 1,224 | 359,702 | 10.7 |
| 2004 | 2,803 | 3,327,680 | 1,187 | 336,713 | 10.1 |
| 2005 | 2,931 | 3,211,166 | 1,096 | 325,487 | 10.1 |
| fiscal year | number of libraries | librarian | ||
| staffs | professional librarian | rate % | ||
| 1990 | 1,898 | 13,255 | 6,754 | 50.95 |
| 1991 | 1,955 | 13,631 | 6,964 | 51.09 |
| 1992 | 2,011 | 14,200 | 7,265 | 51.16 |
| 1993 | 2,091 | 14,699 | 7,517 | 51.14 |
| 1994 | 2,180 | 15,152 | 7,728 | 51.08 |
| 1995 | 2,270 | 15,000 | 7,733 | 51.55 |
| 1996 | 2,336 | 15,172 | 7,745 | 51.05 |
| 1997 | 2,423 | 15,359 | 7,858 | 51.16 |
| 1998 | 2,499 | 15,429 | 7,894 | 51.16 |
| 1999 | 2,560 | 15,356 | 7,800 | 50.79 |
| 2000 | 2,613 | 15,175 | 7,592 | 50.03 |
| 2001 | 2,655 | 15,228 | 7,518 | 49.37 |
| 2002 | 2,686 | 15,181 | 7,426 | 48.92 |
| 2003 | 2,735 | 14,829 | 7,275 | 49.06 |
| 2004 | 2,803 | 14,572 | 7,176 | 49.25 |
| 2005 | 2,931 | 14,206 | 7,042 | 49.57 |