The National Association of Counties publishes an excellent online US county directory search that allows you to hunt down county web sites, official contact information and public records sources with ease.

Use the Find A County map to find county information and public records for a given state.  Click on a state, select a county link to find county official contact information; county web sites ( if any ); county demographic information; county court locations and other county-related record information.

Not sure what county a city or zip code is located in?  Looking for a county official?  Use NACO’s search page to find these and other county-related information searches — County Searches and County Official Searches .