Downers Grove Police Department

The Downers Grove Police Department in Illinois is a confirmed AVCC user. A public records request to the department returned documents specifically referencing a PSDEX addendum — which the agency evaluated for release before withholding it. The existence of a PSDEX addendum being withheld is itself confirmation that one exists. The LexisNexis account manager on the Downers Grove relationship is Wyatt Erwin.

Downers Grove is a village of about 50,000 residents in DuPage County, in the western Chicago suburbs. Illinois enacted its TRUST Act in 2017, restricting law enforcement cooperation with immigration enforcement. DuPage County has historically been less cooperative with sanctuary policies than Cook County or the City of Chicago.

The PSDEX addendum withholding is particularly noteworthy. When an agency identifies a PSDEX addendum in response to a records request and then withholds it — rather than simply stating no such document exists — it confirms the document’s existence while declining to disclose its terms. That is a meaningful distinction. An appeal or subsequent request specifically citing this precedent could unlock the addendum.

A second FOIA to the department produced a direct written admission: “Yes, we contribute police records data to LexisNexis AVCC.” The response also confirmed the department has no mechanism to audit how other agencies use its data and no way to restrict what it contributes. In 2024, Downers Grove signed an agreement to replace its Records Management System with Axon Records — a transition that may affect its PSDEX contribution pipeline.