The Bureau of Investigations and Services is comprised of the following Divisions, Sections, and Units:
- Criminal Investigations Division
- Snohomish County Regional Drug and Gang Task Force
- Support Services Division inclusive of the Records Section and Property and Evidence Section
- Community Health and Safety Section inclusive of Animal Control and Explorer Unit
- Training, Planning and Accreditation Section inclusive of the Cadet Unit
- Administrative Division
- Victim Services Coordinator
- Crime Analyst
- Office of Professional Standards
- Special Operations Section (S.O.S.)
The employees in this Bureau serve in a support role for the rest of the Department, as well as providing direct law enforcement services to the public.