Eaton County Sheriff's Department
- General information about the department, field services division, administrative services, and corrections division with inmate information.
- http://www.eatoncounty.org/Sheriff_Dept/PUBSAFTY.HTM

Eaton County Road Commission
- Responsible for nearly 1,150 miles of county roads. ECRC also provides traffic control and maintains the roadsides.
- http://www.eatoncountyroad.com/

Eaton County Clerk
- Vital records, hours, location and cost of genealogy research.
- http://www.michigan.gov/hal/0,1607,7-160-17449_18635_20736-56575--,00.html