RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4153 locations in the last 30 days (4298 reports) · Last sighting 3 days 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.

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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

56,145 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/15/20255421 N WASHTENAW AVELincoln Square40Completed12 daysMobile DeviceCity 311
9/2/20255732 N HERMITAGE AVEEdgewater40Completed9 daysInternetCity 311
7/8/20262716 W RASCHER AVELincoln Square40Completed7 daysPhone CallCity 311
9/2/20255732 N HERMITAGE AVEEdgewater40Completed9 daysMobile DeviceCity 311
12/4/20251616 W BERWYN AVEEdgewater40Completed1 dayPhone CallCity 311
4/22/20265336 N WESTERN AVELincoln Square40Completed2 daysInternetCity 311
9/24/20251744 W BRYN MAWR AVEEdgewater40Completed8 daysPhone CallCity 311
8/16/20252533 W FARRAGUT AVELincoln Square40Completed12 daysInternetCity 311
8/14/20251725 W RASCHER AVEEdgewater40Completed13 daysPhone CallCity 311
1/7/20262622 W BALMORAL AVELincoln Square40Completed2 daysMobile DeviceCity 311
8/19/20255419 N ARTESIAN AVELincoln Square40Completed9 daysInternetCity 311
4/17/20262641 W CARMEN AVELincoln Square40Completed0 daysInternetCity 311
4/30/20261614 W GREGORY STEdgewater40Completed1 dayInternetCity 311
7/6/20261720 W RASCHER AVEEdgewater40Completed4 daysInternetCity 311
8/18/20255610 N WESTERN AVEWest Ridge40Completed10 daysInternetCity 311
4/30/20266911 N HAMILTON AVEWest Ridge40Completed1 dayAlderman's OfficeCity 311
8/27/20256121 N HAMILTON AVEWest Ridge40Completed1 dayMobile DeviceCity 311
9/5/20256137 N TALMAN AVEWest Ridge40Completed3 daysPhone CallCity 311
9/23/20256123 N WINCHESTER AVEWest Ridge40Completed7 daysMobile DeviceCity 311
8/26/20266963 N BELL AVEWest Ridge40Completed16 daysInternetCity 311
8/30/20262745 W GREGORY STLincoln Square40Completed9 daysInternetCity 311
8/15/20255042 N CLAREMONT AVELincoln Square40Completed13 daysInternetCity 311
8/14/20255732 N HERMITAGE AVEEdgewater40Completed13 daysInternetCity 311
9/2/20251833 W NORWOOD STWest Ridge40Completed9 daysPhone CallCity 311
12/4/20255319 N ASHLAND AVEEdgewater40Completed1 dayInternetCity 311
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