911 Addressing Addressing Forms New Address Application Roadway Naming Form Addressing Information Documents Addressing FAQs Change of Address Tips and Considerations Updating Commercial GPS and Map Data (i.e. Google Maps) Addressing Guidelines Blair County Street Naming and Addressing Guide (SNAG) Contact Blair County Courthouse423 Allegheny St., Suite 011Hollidaysburg, PA 16648 (814) 693-2535 gis@blairco.org HOURSMonday - Friday8:00 AM - 4:00 PM (EST)