RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4459 locations in the last 30 days (4622 reports) · Last sighting 10 hours ago

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What am I looking at?

Each circle is a Chicago neighborhood. The number is its report count — click one to zoom in and see individual sightings there.

32080fewer → more

Colors are relative to what’s currently on screen, so they adjust as you switch time ranges.

Zoomed into a neighborhood or zip? Same colors group nearby reports, and a bright dot means that exact spot’s been reported more than once.

Why Chicago keeps score on its rats

Chicago has topped national rankings of the rattiest U.S. cities for over a decade running — a reputation the city itself takes seriously enough to run one of the country’s most active 311 rodent-complaint programs. Every baiting request, burrow report, and complaint filed with the city becomes a public record. RatCity turns that record, plus reports from people who live here, into a map you can actually use: is this block bad? Is it getting worse? Which neighborhood is winning (or losing) the fight this month?

What’s actually on the map

Most of the data is Chicago’s own — every “Rodent Baiting/Rat Complaint” filed through 311, pulled in automatically once a day so the map never goes stale. Layered on top are sightings reported directly by visitors, matched to the same neighborhood and zip-code boundaries the city uses, so a resident’s report and an official 311 complaint carry equal weight on the map.

Reading the map

Circles are sized and colored by how many reports a neighborhood has racked up — blue is quiet, red means trouble. The Day / Week / 30 Days / Year toggle up top changes the window, so you can see whether a neighborhood’s rat problem is a one-week blip or a year-long trend. Whoever’s in the lead gets crowned the neighborhood Rat King in the sidebar, a title that changes hands as new reports come in.

Noticed a rat that isn’t on the map yet? Use “Report a sighting” above — it takes under a minute and goes live as soon as it’s reviewed. Curious about where the data actually comes from or how reports are moderated? See the About page for the full breakdown.

Want more? The blog has weekly trend recaps and guides on Chicago’s rat problem and how to keep it out of your home.

Browse every sighting

53,341 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/10/20268118 S ELLIS AVEChatham8Completed8 daysMobile DeviceCity 311
9/19/20268118 S ELLIS AVEChatham8Open—Phone CallCity 311
9/15/20268118 S ARTESIAN AVEAshburn18Open—Mobile DeviceCity 311
11/11/20258117 S MARSHFIELD AVEAuburn Gresham17Completed1 dayPhone CallCity 311
5/4/20268116 S WOOD STAuburn Gresham17Completed2 daysInternetCity 311
9/6/20258116 S KENWOOD AVEAvalon Park8Completed9 daysInternetCity 311
10/31/20258116 S INGLESIDE AVEChatham8Completed3 daysPhone CallCity 311
11/4/20258116 S HARPER AVEAvalon Park8Completed2 daysPhone CallCity 311
6/8/20268116 S CLAREMONT AVEAshburn18Completed3 daysMobile DeviceCity 311
6/2/20268116 S ADA STAuburn Gresham17Completed1 dayPhone CallCity 311
12/21/20258115 S WENTWORTH AVEChatham6Completed1 dayPhone CallCity 311
11/4/20258115 S PRAIRIE AVEChatham6Completed2 daysPhone CallCity 311
9/22/20268115 S MORGAN STAuburn Gresham17Open—Phone CallCity 311
7/15/20268115 S HARPER AVEAvalon Park8Completed14 daysPhone CallCity 311
5/27/20268115 S HARPER AVEAvalon Park8Completed6 daysPhone CallCity 311
5/27/20268115 S HARPER AVEAvalon Park8Completed2 daysPhone CallCity 311
4/26/20268115 S ELIZABETH STAuburn Gresham17Completed3 daysPhone CallCity 311
7/20/20268114 S ELIZABETH STAuburn Gresham17Completed11 daysPhone CallCity 311
10/29/20258113 S PAULINA STAuburn Gresham17Completed5 daysPhone CallCity 311
7/6/20268113 S PAULINA STAuburn Gresham17Completed1 dayPhone CallCity 311
11/14/20258113 S PAULINA STAuburn Gresham17Completed3 daysPhone CallCity 311
10/13/20258113 S DREXEL AVEChatham8Completed8 daysInternetCity 311
9/22/20258112 S AVALON AVEAvalon Park8Completed7 daysAlderman's OfficeCity 311
11/5/20258111 S PRAIRIE AVEChatham6Completed1 dayPhone CallCity 311
10/27/20258111 S ELIZABETH STAuburn Gresham17Completed7 daysPhone CallCity 311
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