The GIS and Map division of the Montgomery County Planning Department supplies all of the mapping needs for the county, including developing a new GIS system, maintaining the 911 address and street name system and the county's tax parcel maps, and creating specialized maps. The GIS/Mapping office is open from 8:30 a.m. to 5:00 p.m., Monday through Friday and can be reached by calling 540-382-5750 or by emailing montmap@naxs.net.