RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4582 locations in the last 30 days (4737 reports) · Last sighting 20 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.

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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

55,880 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/13/20261611 W RASCHER AVEEdgewater40Completed1 dayInternetCity 311
3/11/20267024 W MELROSE STDunning29Completed1 dayMobile DeviceCity 311
4/20/20266206 W WAVELAND AVEDunning38Completed1 dayMobile DeviceCity 311
2/18/20261616 W CORNELIA AVELake View47Completed1 dayInternetCity 311
7/14/20262249 W WALTON STWest Town36Completed1 dayMobile DeviceCity 311
6/10/20265303 S MULLIGAN AVEGarfield Ridge23Completed1 dayMobile DeviceCity 311
12/1/20252301 W MORSE AVEWest Ridge40Completed1 dayMobile DeviceCity 311
3/21/20262519 W LAWRENCE AVELincoln Square40Completed1 dayInternetCity 311
3/11/20267027 W SCHOOL STDunning29Completed1 dayMobile DeviceCity 311
12/7/20252831 N LOWELL AVEHermosa31Completed1 dayMobile DeviceCity 311
11/25/20251856 S THROOP STLower West Side25Completed1 dayInternetCity 311
6/6/20264404 W 87TH STAshburn18Completed1 dayInternetCity 311
11/1/20254932 N WESTERN AVELincoln Square40Completed1 dayInternetCity 311
3/25/20264544 N WHIPPLE STAlbany Park33Completed1 dayMobile DeviceCity 311
4/26/20264047 W FULLERTON AVEHermosa35Completed1 dayMobile DeviceCity 311
6/16/20263216 W WABANSIA AVEHumboldt Park26Completed1 dayMobile DeviceCity 311
3/4/20268839 S CARPENTER STAuburn Gresham21Completed1 dayInternetCity 311
11/8/20254648 W WASHINGTON BLVDAustin28Completed1 dayPhone CallCity 311
1/19/20262117 N DAMEN AVELogan Square32Completed1 dayInternetCity 311
6/1/20264648 W WASHINGTON BLVDAustin28Completed1 dayPhone CallCity 311
12/6/20253316 W LAWRENCE AVEAlbany Park33Completed1 dayInternetCity 311
3/16/20263035 S BONFIELD STBridgeport11Completed1 dayPhone CallCity 311
2/7/20261420 W PRATT AVERogers Park49Completed1 dayInternetCity 311
12/1/20253607 W WOLFRAM STAvondale35Completed1 dayInternetCity 311
6/3/20262944 N ALLEN AVEAvondale35Completed1 dayPhone CallCity 311
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