Skip to content
Public Records Safety
Public Records Safety

County report card · Illinois

DuPage County, Illinois

ProtectedAudited 2026-08-24

County website Vendor (Tyler Technologies) prohibits automated data harvesting

Population
937,142
Portal
Assessor & Recorder
Portal vendor
Tyler Technologies

What the audit checked

Four low-cost protections every online records portal can have. How we rate counties.

  • robots.txtYes — permissive
  • Terms of useProhibits automation
  • Bot challengeNone detected
  • Owner notificationAvailable

Portal audited: www.dupageco.org/PropertyInfo/PropertyLookUp.aspx, recorder.dupageco.org/, tapestry.fidlar.com, www.dupageco.org/PropertyInfo/PropertyLookup.aspx, dupage.maps.arcgis.com/home/index.html

Doing well

  • A Terms of Use that prohibits automated access to records
  • A notification system that alerts residents when their records are accessed

Room to grow

  • Expanding the robots.txt file to disallow automated scrapers

What to ask for

Building on the protections already in place, you might consider a property-owner notification system (like the ones AZ, FL, HI, IL, and UT have implemented) and a formal data-governance policy that addresses commercial data aggregators.

The full playbook is What Counties Can Do.