RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4548 locations in the last 30 days (4695 reports) · Last sighting yesterday

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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.

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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

55,474 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/20/20261817 N BISSELL STLincoln Park43Completed1 dayInternetCity 311
6/10/20261817 N BISSELL STLincoln Park43Completed0 daysInternetCity 311
8/4/20251817 N CLARK STLincoln Park43Completed9 daysMobile DeviceCity 311
4/29/20261817 N CLARK STLincoln Park43Completed2 daysAlderman's OfficeCity 311
5/18/20261817 N CLEVELANDLincoln Park43Completed1 daySalesforce Mobile AppCity 311
5/20/20261817 N PULASKI RDHermosa26Completed6 daysInternetCity 311
4/15/20261817 N PULASKI RDHermosa26Completed2 daysInternetCity 311
5/25/20261817 N WINCHESTER AVELogan Square32Completed3 daysInternetCity 311
5/28/20261817 S BISHOP STLower West Side25Completed4 daysMobile DeviceCity 311
7/31/20251817 W IOWA STWest Town36Completed13 daysInternetCity 311
6/10/20261817 W PATTERSON AVENorth Center47Completed5 daysMobile DeviceCity 311
6/8/20261818E W NORWOOD STWest Ridge40Completed1 dayInternetCity 311
8/5/20251818 N HARDING AVEHermosa26Completed6 daysMobile DeviceCity 311
6/8/20261818 N KEDVALE AVEHermosa26Completed1 dayPhone CallCity 311
6/2/20261818 N KEDVALE AVEHermosa26Completed3 daysPhone CallCity 311
6/23/20261818 N KEDVALE AVEHermosa26Completed1 dayPhone CallCity 311
4/24/20261818 N KEDVALE AVEHermosa26Completed5 daysAlderman's OfficeCity 311
8/19/20251818 N KEDVALE AVEHermosa26Completed14 daysPhone CallCity 311
11/10/20251818 N KEDVALE AVEHermosa26Completed4 daysPhone CallCity 311
7/11/20261818 S BISHOP STLower West Side25Completed9 daysMobile DeviceCity 311
5/31/20261818 S CENTRAL PARK AVENorth Lawndale24Completed3 daysMobile DeviceCity 311
2/8/20261818 S KOMENSKY AVENorth Lawndale24Completed1 dayPhone CallCity 311
12/8/20251818 S KOMENSKY AVENorth Lawndale24Completed1 dayPhone CallCity 311
11/18/20251818 S KOMENSKY AVENorth Lawndale24Completed1 dayPhone CallCity 311
7/4/20261818 S MORGAN STLower West Side25Completed3 daysInternetCity 311
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