- Profile
- Name: Named in 1835 for Supreme Court Chief Justice John Jay
- County Seat: Portland
- Jay County Statistics
- Townships
- Bearcreek / Greene / Jackson / Jefferson / Knox / Madison / Noble / Penn / Pike / Richland / Wabash / Wayne
- Community Sites
- Jay County
- Jay County Convention and Visitors Bureau
- Dunkirk Area Chamber of Commerce
- Portland Chamber of Commerce
- Jay County Public Library
- School Corporations
- Jay County Schools