| 1998 | 1999 | % Change 98 - 99 | |
| Population Served | |||
| Total Population of Indiana | 5,544,159 | 5,544,159 | 0% |
| Residents Taxed for Library Service | 5,091,398 | 5,140,523 | 0.96% |
| Residents Taxed as % of Total Population | 91.83% | 92.72% | 0.96% |
| Public Libraries | |||
| Central Buildings | 238 | 238 | 0% |
| Branches | 186 | 186 | 0% |
| Bookmobiles | 44 | 40 | -9.09% |
| Borrowers | |||
| Individual and Family Resident Registered Borrowers | 3,212,720 | 3,351,510 | 4.32% |
| Individual and Family Resident Registered Borrowers as % of Total Population Taxed for Library Service | 63.10% | 65.20% | 3.32% |
| Income | |||
| Total Local Income | $169,284,257 | $181,107,081 | 6.98% |
| Total State Income | $17,646,172 | $17,539,780 | -0.60% |
| Total Operating Income | $199,301,707 | $212,443,209 | 6.59% |
| Expenditures | |||
| Total Personal Services (Staff) Expenditures | $108,771,053 | $116,506,006 | 7.11% |
| Total Personal Services (Staff) Expenditures Per Capita | $21.36 | $22.66 | 6.07% |
| Total Personal Services (Staff) Expenditures as % of Total | 56.36% | 56.72% | 0.65% |
| Material Expenditures | $34,037,176 | $35,757,740 | 5.05% |
| Material Expenditures Per Capita | $6.69 | $6.96 | 4.11% |
| Material Expenditures as % of Total | 17.64% | 17.41% | -1.28% |
| Total Operating Expenditures Per Capita | $37.91 | $39.96 | 5.41% |
| Total Operating Expenditures | $193,005,968 | $205,398,171 | 6.42% |