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Geographic Information Services

by Jonathan Bailey last modified 2021-07-15 11:12 AM

The Geographic Information Services Department provides support to all Marshall County departments. Our goal is to help increase the efficiency and productivity of Marshall County through the implementation of Geographic Information System (GIS) applications and technology.


Online Maps


What is a Geographic Information System (GIS)?

A geographic information system (GIS) is a computer system capable of assembling, storing, manipulating, and displaying geographically referenced information (i.e. spatial data). This system should include:

  • hardware (computers, printers, plotters, scanners, digitizers, GPS units, etc.)
  • software (programs like ArcInfo, ArcView, MapInfo, Maptitude, AutoCad Map, GeoMedia, etc.)
  • data (files that may be loaded into the software programs, such as roads, town boundaries, parcels, aerial photographs, etc.)
  • staff (analysts, technicians, etc.)

What is a GIS used for?

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.

Marshall County GIS Department
Marshalltown, IA 50158

Phone: 641-844-2810

Normal business hours are from 8:00 AM to 4:30 PM, Monday through Friday.


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