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