All data are from 2006-07 unless otherwise noted.
1: Adjusted Equalized Net Grand List Per Capita, a measure of town wealth calculated by the state Department of Education. It is a combination of property tax base per person and income per person. Connecticut's municipalities are ranked from 1 (wealthiest) to 169.
2: Total number of people entering the library and its branches for whatever purpose, including those attending activities and meetings and those who require no staff services. They are estimates, except in the cases of four libraries whose figures are actual head counts: Slater Public Library, Bill Library, Preston Public Library and Waterford Public Library.
3: Total items charged out of the library, regardless of format, including renewals.
4: Sum of all library materials, including books, periodicals, electronic books, audios, videos, DVDs, databases, etc.
5: Figure reflects the total town tax appropriations for Groton Public Library, Bill Memorial Library, and Mystic & Noank Library.
6: Figure reflects the total town tax appropriations for Stonington Free Library, Westerly Public Library, and Mystic & Noank Library.