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About Us

Statement of Purpose

The Henry County Geographic Information System provides improved methods for collecting, managing and using location based information to analyze trends, design spatial models and develop projections to support decision making processes and enhance public access to data in an equitable manner.

Mission Statement

Henry County will promote fact-based decision making for both day-to-day operation needs and long range planning to benefit citizens of this County. The Henry County Geographic Information System, hereinafter GIS, will enable elected officials, department heads, county employees, public and private agencies and citizens of Henry County to graphically view and analyze information, and apply GIS technology to Henry County issues.


  • To provide a cost-effective means for coordinating, sharing and disseminating location-based information in an equitable manner.
  • To enhance communication among local, regional, state and federal government agencies, as well as utilities, businesses and industries through cooperation and data integration.
  • To promote increased awareness about GIS technology and applications to the public and private agencies.
  • To coordinate the development of GIS databases within Henry County in order to reduce redundancy and increase efficiently. 
  • To provide technical assistance for Henry County GIS projects.
  • To update and maintain Henry County's digital cadastral base map.
  • To maintain the Henry County digital orthophotos.
  • To create and maintain GIS data standards for Henry County.
  • To assist with compiling and maintaining information (metadata) about Henry County GIS data.


GIS Data Summary

Coordinate System

  • North American Datum 1983, State Plane Illinois West (NAD_1983_StatePlane_Illinois_West_FIPS_1202_Feet)

Primary Geographic Features

 Cadastral_Anno Textual elements (annotation) with subtypes like lot or parcel dimension
 Cadastral_Line Polyline's are "tagged" as one, or more, of the following features: Corporate, County, Geographic Township, Indian, Lot, Misc., Parcel, Political Township, Railroad Centerline, Railroad Right-of_way, Road Centerline, Road Right-of-way, Section, Subdivision, Water
 Cartography Linear features which help describe other features like ownership hooks, dimension tics, etc.
 CorpPoly Corporate boundary
 Flood_Poly To designate bulletin-810 flood areas
 GeoTwpPoly Township boundaries used for meets & bounds legal descriptions (e.g. T15N R5E = Kewanee Township)

Designates farm land use

 ParcelPoly Area designated to be a parcel
PolTwpPoly Township boundaries as politically designated
SectionPoly Township section boundaries
 Soils Soil Survey from NRCS
SubPoly Subdivision boundaries



Henry County GIS
307 W Center St
Cambridge, IL 61238

309-937-3404 - Voice
309-937-3949 - Fax