What is GIS?
A Geographic Information System (GIS) is a combination of computer hardware and software used to map and analyze real world features such as roads, streams, street signs, and more. The technology lets analysts discover relationships between the data that might not be easily understood otherwise.

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Q: What is GIS?
Q: What is the Interactive Map & App Gallery?
Q: What is the difference between the Interactive Map & App Gallery, the Interactive Manassas Map, and the Map Catalog?
Q: What kind of software do I need to view and print maps from the Map Catalog?
Q: What kind of software do I need to use the Interactive Maps?
Q: How often is the Interactive Manassas Map updated?
Q: How do I obtain a specialized map or view older aerial photographs?
Q: How do I contact the City of Manassas GIS Group?