GIS
Location
Courthouse
1 E. Main St., Suite 270
Marshalltown, IA 50158
Driving Directions
641-844-2810
gis@marshallcountyia.gov
Monday - Friday
8:00 am - 4:30 pm
Holiday Closures
GIS Specialist
Disclaimer
Map imagery and other data are provided through Marshall County’s Geographic Information System (GIS). GIS is for informational purposes only. Property lines and boundary lines displayed on the GIS are an approximate representation of the location of your property lines and should only be used as a visual reference. Aerial maps are not to be used for legal purposes; if you are unsure of your property line(s), a certified local land surveyor may need to be contacted. Marshall County uses this information for its own purposes and provides it to users with no implied assurance as to its accuracy. Furthermore, Marshall County will not be held liable for errors, omissions, or delays in this information if damages or losses occur from its display or use.
What is GIS, and what is it Used For?
A Geographic Information System (GIS) is a computer mapping system capable of assembling, storing, manipulating, and displaying geographically referenced information (i.e., spatial data). It is essentially a digital map made up of multiple layers of information. At its base are aerial photographs of a county. On top of that, different types of data—like property boundaries, roads, soil types, and subdivisions—are added as separate layers. These layers can be turned on or off depending on what information someone needs.
Local governments (Counties/Cities) typically involve a variety of agencies, including assessors, auditors, engineering, planning, public works, public safety, recorders, treasurers, and zoning. These agencies are relying more on GIS technology to plan new land developments, determine tax valuations, maintain real estate land records, manage public works networks, route emergency vehicles, analyze crime and accident patterns, manage transportation systems, and study environmental issues.