The agency responsible for the maintenance and upgrade of the county's transportation system.

Provides a local structure which coordinates federal, state, and local resources in planning, financing, constructing, and operating transportation projects.

Information on financial assistance the county has received from the fund.

Lists population figures, institutions of higher education, land, people, and places to visit. Linked from Ohio Public Library Information Network.

Provides maps, pictures, schedule of events, and registration information.

Provides public information concerning the county bar association, its activities, and the legal system.

Posts live and previous election results. Also provides the election calendar and information about the board, issues, candidates, voter registration and pollworker employment.

Branch office of Ohio State University, it combines the needs of local citizens and communities, with new research and technical information.

Provides demographic, business, and agriculture profiles.

Provides a list of Ohio Department of Natural Resources wildlife and recreational areas in the county.

Provides profile of department, law enforcement programs, crime statistics and sex offender information.

Official county site with demographic information including links to government offices and local sites of interest.

Provides population, demographic, and housing information.

Map of Butler County linked from Ohio DOT site. Very low detail.

Economic Development Association of Butler County.

Information on the political infrastructure of the county. Linked from Harden Political InfoSystems.

Site contains information on the political history, cemeteries and memorial sites in the county.