Mercari Personal Medical Alarms

Chicago's 28 security service listings cluster in a few downtown-adjacent zips. Zips 60601, 60606, 60607, and 60611 each carry three listings, while 60608, 60617, 60642, and 60649 each carry two. If you're in one of those denser zips, call two or three and compare response times and coverage before picking one. In the thinner zips, you may only find one or two options nearby, so it's worth checking whether a company outside your zip still services your address.

Every listing here has a phone number on file, and 26 of the 28 link out to a website, so most have enough detail to start a conversation. None of these listings carry a Sponsored tag, since paid placement hasn't been switched on for security services in Chicago yet, meaning what you see is the unranked directory default. If your company is listed here and the number or site link is stale, you can claim the listing and correct it yourself, which matters most for firms in the single or double listing zips where a caller nearby has few other names to try.