Department of Economic Development: Providing economic development for existing and new businesses in the county.
John A. Frisch, CPA, P.C.: Offers accounting and tax services. Located in Lake Ridge and Dumfries.
Mountcastle Funeral Home: Offers cremation and funeral services. Located in Dale City and Woodbridge.
Precious Pets: Offers dog walking, and pet sitting services in eastern Prince William County.
Synergy One Federal Credit Union: Community credit union providing banking services for Prince William County. Locations in Manassas and Woodbridge.
Yellow Cab of Prince William County: 24-hour service to all area airports and around town. Holiday service includes SoberRide.