The National League of Cities
This site is the official homepage of The National League of Cities, the biggest organization in the United States that represents local governments. This site serves as a municipal government guide, offering numerous links to city, county, and state government-related resources.
http://www.nlc.org/
State and Local Governments
The Library of Congress maintains this comprehensive collection of U.S. state and local government resources on the World Wide Web. This site also has links to a variety of state maps, as well as links to other state government sites.
http://lcweb.loc.gov/global/state/stategov.html