Q: What's the difference between a guest and subscription log in?
A: Guests can freely access the map and a limited amount of parcel data. For example, subscribers may search and view owner name but guests cannot. See the Comparison document for a summary of differences.
Q: I'm a subscriber and cannot log in, what should I do?
A: Try retyping the password, especially if your browser is set to remember it. Try clearing the browser cache and log in again. Call the GIS department at 309-937-3404 or the Assessment Office at 309-937-3570. You can also email firstname.lastname@example.org.
Q: Why doesn't the map reflect a property split or combination?
A: The document may have been recorded during a time when property line changes are on hold until finalization of taxes. Property line changes recorded AFTER September are reflected in the following year.
Q: How often is the online data updated?
A: The update dates for the map is on the disclaimer page. But in general, the mapping data is updated once a month and the assessment data, as identified through the map, is updated weekly.
Q: Who should be contacted if I think something is incorrect?
A: If there is a question about the boundaries of a parcel contact the GIS Office at 309-937-3404. If there is a question about the assessment information or you need to make a change of address contact the Assessment Office at 309-937-3570.
About GIS Data
Q: Is the data available for download?
A: Some assessment data can be downloaded through the mapping by clicking the "save" button on the parcels identify results screen. Contact the GIS department for fees for obtaining geographic and/or tabular ownership data.
Q: When was the aerial photography taken?
A: April 2014
Q: What projection and coordinate system does Henry County use?
A: Transverse Mercator projection, North American Datum 1983, State Plane Illinois West
Q: What is a shapefile?
A: The shapefile is a widely used file format for exchanging GIS data between GIS and CAD systems. One shapefile consists of several individual files pertaining to one feature class, like parcel polygon.
Q: What are the fees to obtain data from the GIS department?
A: There are four general fees: maps, reports, cadastral data, and tabular data.
- Maps: A typical letter size page is $2 while a 34" x 44" plotted page is $24.
- Reports: $2 plus $0.05 per letter page
- Cadastral data: Is calculated at $25 plus $0.10 per parcel
- Tabular data: is calculated at $25 plus $0.05 per record for 1-3000 records, $150 plus $0.04 per record for 3001 to 7000, $310 plus $0.03 per record for 7001 to 15000, or $550 plus $0.02 per record for 150001 or more records
About Online Mapping
Q: How do I find help? Is there a tutorial?
A: Yes, click the question mark on the right side of the top tool bar. This will expose additional help for navigating the map and for selecting map features. A tutorial document is also available. See Henry County Assessment-GIS Website User Guide.
Q: What do the different lines and colors mean?
A: Turn on the legend in the "visibility layers" part of the tool bar. The colors of most-used lines are:
- Red - property lines and dimensions
- Yellow - road right-of-way lines and dimensions
- Cyan - subdivision lot lines and dimensions
- Green - subdivision boundary
- Orange - railroad lines and dimensions
NOTE: Only one line is displayed when boundaries overlap. For example, the road right-of-way line displays when it's the same as a property line.
Q: Can I find property information outside of Henry County, IL?
A: No. This website only pertains to Henry County, IL.
Q: Can you give tips for searching data?
A: Yes. Searches are not case sensitive (a=A, b=B, etc.) and entering more letters narrows the search possibilities. Dashes are not used in parcel number searches. Owner names are searched by LASTNAME, FIRSTNAME