Cook County Department of Animal and Rabies Control requires microchipping for every dog and cat released through county-supported shelters. Owners must keep registry data current; many suburban shelters and rescues have adopted matching policies under Chapter 30.
CCDARC and partner Cook County shelters require a microchip implant in every dog or cat released through adoption or owner-redemption. Registry information must be transferred to the new owner and kept current; CCDARC scans every impounded animal to speed reunification. While Chapter 30 of the Cook County Code does not yet impose a universal license-microchip rule like LA County's, the county's 2020s licensing rollout strongly encourages microchipping at the time of license issuance. Chicago Animal Care and Control and most suburban shelters have adopted parallel microchip-on-adoption policies, making the county-tier rule the practical baseline.
Releasing a shelter pet without a chip, or leaving registry data outdated, draws administrative penalties on shelters and additional reclaim fees on owners. Repeat lapses can suspend a rescue's CCDARC partnership status under Chapter 30.
See how Arlington Heights's microchipping rules stack up against other locations.
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