See also:

• Regional: North America: United States: Ohio: Regions: Western  (20)

• Celina - Mercer Chamber of Commerce - Presents calendar of events, officer and trustee directory, education, and business information.
• Franklin Township - Official site provides information on the town and area businesses and services.
• Mercer County - Site provides information on all county offices and departments.
• Mercer County - Board of Elections - Posts live and previous election results. Also provides the election calendar and information about the board, issues, candidates, and absentee ballot application.
• Mercer County Community Development - Attracts and retains businesses with the help of many good state and local programs. Also presents an overview of the county.
• Mercer County Connections - Includes county profile and services, educational and government websites, parks and recreation, health facilities, and places to visit.
• Mercer County District Library - Located in Celina with branches located in Mendon, Chickasaw, and St. Henry. Provides an online database, branch details, hours, special holdings, and programs offered.
• Mercer County Educational Service Center - Provide services which assist in providing a quality education for Pre-K to 12th grade students.
• Mercer County Extension Office - Branch office of Ohio State University, it combines the needs of local citizens and communities, with new research and technical information.
• Mercer County Fair - Includes schedule and information about the fair and other events held on the fairgrounds in Celina.
• Mercer County, Ohio - U.S. Census Bureau - Provides population, demographic, and housing information.
• Mercer County Sheriff's Office - Provides profile of department, personnel, and history.
• Ohio: Auglaize & Mercer Counties - Provides an editorial survey of economic development opportunities in the counties.
• The Political Graveyard: Mercer County, Ohio - Site contains information on the political history of Mercer County, cemeteries and memorial sites in the county.
• Profile for Mercer County - Information on the political infrastructure of the county.