- In 2011, 9 public libraries serving a million+ residents were open between 30 and 39 hours per week
- In 2011, no public libraries serving a million+ residents were open more than 59 hours per week
- The Houston Public Library (Central) is currently open 58 hours per week.
- On the other hand, the Philadelphia Free Library (Central) is currently open 69 hours per week.
Source: Institute of Museum and Library Service Public Libraries in the United States Survey, Fiscal Year 2011.
Hours of operation. (4/3/2014)
Public Libraries: Larger and Smaller Units of Governance, Iowa and South Carolina. (4/1/2014)
Number of public libraries in the ten most populous states. (4/1/2014)
Percentage distribution of public libraries by legal service area population. (3/30/2014)
Public libraries by type of legal basis. (3/30/2014)
Public library revenue. (3/24/2014)
Number of libraries, 2011 (administrative units). (3/19/2014)
Library staffing, 2001-2011. (3/19/2014)