Washtenaw County, website
Washtenaw County in Michigan uses area codes 313 and 734. On this page, you will see the physical addresses and contact information of the most relevant government agencies in Washtenaw County, including the Clerk’s Office, Sheriff’s Office, and the Health Department.
Sheriff’s Office
8140 Main St., Dexter, MI 48130
Phone: (734) 426-0228
Police Department
301 E. Huron St., Ann Arbor, MI 48104
Phone: (734) 794-6920
County Court
4133 Washtenaw Ave., Ann Arbor, MI 48108
Phone: (734) 971-6050
15th District Court
Justice Center
301 E. Huron
P. O. Box 8650
Ann Arbor, MI 48104
Phone: (734) 794-6759
22nd Circuit Court
Washtenaw County Courthouse
101 E. Huron Street
P. O. Box 8645
Ann Arbor, MI 48107
Phone: (734) 222-3270
Fax: (734) 222-3077
Probate Court
Washtenaw County Courthouse
101 E. Huron St.
P. O. Box 8645
Ann Arbor, MI 48107
Phone: (734) 222-3072
County Clerk
200 N. Main, Suite 100
P. O. Box 8645
Ann Arbor, MI 48107-8645
Phone: (734) 222-6700
Treasurer
200 N. Main Street
Suite 200
P. O. Box 8645
Ann Arbor, MI 48107-8645
Phone: (734) 222-6600
Washtenaw County Jail
2201 Hogback Rd., Ann Arbor, MI 48105
Phone: (734) 585-7247
Emergency Services
2201 Hogback Road
Ann Arbor, MI 48105
Phone: (734) 973-4900
Fax: (734) 971-8690
Emergency: (734) 994-2911
Human Resources
220 N. Main Street
Ann Arbor, MI 48104
Phone: (734) 222-6800
Fax: (734) 222-6775
Health Department
555 Towner Ave., P. O. Box 915
Ypsilanti, MI 48197
Phone: (734) 544-6700
Fax: (734) 544-6704
Intermediate School District
1819 S. Wagner Rd., Ann Arbor, MI 48106
Phone: (734) 994-8100