Deanna Koski was first elected to the City Council in 1989. Deanne has completed Levels I, II and III of the Elected Officials Academy through the Michigan Municipal League (MML). She is a graduate of the Sterling Heights Police Department Citizen's Academy, the Sterling Heights Fire Department Citizen's Academy and the CERT program, IS-100 and IS-700. Deanna earned her associate degree as a legal assistant from Macomb Community College. She also holds a Real Estate Brokers License.
Deanna is active at all levels of government service. She has served as a Macomb County city representative for the Michigan State Boundary Commission. Through MML she has served on the Legislative and Urban Affairs Committee (vice chair), the Elected Officials Academy Board, the Public Safety Committee and the Legislative Governance Committee. She was also former chairperson for Region I of the MML. Deanna was elected in 2007 to the MML Board of Trustees for a 3-year term. She has also served on the National League of Cities' (NLC) Public Safety and Crime Prevention Steering Committee and was former president of the NLC Women in Municipal Government Association. Deanna is a supporter of the Sterling Heights Community Foundation and is also a member of the Sterling Heights Area Chamber of Commerce, Oakland County Bar Association, Business Women's Alliance and was a past member of the City of Sterling Heights Board of Review.
Deanna and her husband, Dennis, have 3 sons, 2 daughters-in-law and 5 grandchildren – 2 granddaughters and 3 grandsons.