Interactive Map Gallery / Open Data
The DuPage County Maps & Application Portal is an interactive
site which provides you access to maps and applications for inquiry and analysis
of DuPage County "Geospatial Data". You can browse the scrolling
windows (click on the ">>" to scroll in maps portal) for popular maps and web mapping applications. Please also view the “Gallery”
link for all maps and applications provided via the portal. You
can also get these same maps & applications but grouped together by
various County Department and Agencies via the “Groups” link after you open the portal.
Types of maps and web mapping applications available in the DuPage Maps Portal:
Viewer - Search for parcels and other parcel related information.
Please see the "Help" button and download the PDF help doc on how to use
the interactive web mapping application.
RxBox Locations - Safely dispose of old, or expired medications to a facility located near you. Several sites are displayed within this web mapping application. Click on a site for detailed information.
Narcan Saves - Learn about how many lives have been saved in the County of DuPage by sheriff and municipal police departments using Narcan.
Food Pantry Map - A map showing all the local food pantries in the County of DuPage. Click on a site for details.
Election Polling Places - Find your election polling location and district. See the help button in the application on how to use the application.
Benchmarks NAVD88 - For Surveyor's find a benchmark in DuPage County, Illinois. (Additional help for this application shown below.)
How to use "Benchmarks NAVD88": Open the application / zoom
into a specific benchmark. Select (or left mouse click) on a benchmark
(a pop-up window will appear) click on the "VIEW_BENCHMARK_PDF" link
which will open (or download) a PDF document with detailed information
for the selected benchmark. PDF documents can be saved locally and
A new zoom button has bee added into the "Benchmarks NAVD88" web
mapping application. Users can search and zoom into a street
intersection then zoom out to find the closest benchmark. The new button
is located in the upper left hand corner of the application.
To access this application through our
DuPage Maps Portal
scroll to the right using the ">>" arrows and select the "DuPage
County Geodetic Control & GPS CORS Base Stations" Map Gallery. Next
select the "NAVD88 Benchmarks" DuPage County GIS application to open the
Notice Benchmark Data as of: April 25, 2012
County has upgraded its benchmark system from the North American
Geodetic Vertical Datum of 1929 (NGVD29) to the North American Vertical
Datum of 1988 (NAVD88). Benchmarks in NGVD29 are no longer available.
Additional information / Benchmark Questions:
If you locate a benchmark in the field and it is not shown in the new
NAVD88 benchmark web mapping application, it’s either an old NGVD29
benchmark (which is no longer supported or available from the County of
DuPage) or it may be a local village benchmark.
If you find a disturbed or destroyed DuPage County benchmark in the field or have any questions please submit an email to
*Helpful Information for maps and web mapping applications:
You may need to install or upgrade your web browser on your computer
to view the new "Parcel Viewer" and other web mapping applications. If you have
popup blocker turned on (or) you are trying to view the application in
"Private Mode" certain functions in the web mapping application will not
Open Data (Download DuPage County data for free.)
DuPage County Geospatial data is available for “FREE” from our online GIS Open Data web site. This open data portal can also be access via the DuPage County Maps and Applications Portal. Users will be able to download various datasets in various formats for their own use.
Open Data site: DuPage County Open GIS Data See for instructions and download access.