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
7/28/20263835 N MARSHFIELD AVELake View47Completed13 daysInternetCity 311
7/28/20266337 W CORNELIA AVEDunning30Completed10 daysAlderman's OfficeCity 311
7/28/20264925 N LINCOLN AVELincoln Square40Completed14 daysInternetCity 311
7/28/20266315 W HENDERSON STDunning30Completed10 daysMobile DeviceCity 311
7/28/2026201 E RANDOLPH STLoop42Completed9 daysInternetCity 311
7/28/20261437 W OHIO STWest Town1Completed9 daysInternetCity 311
7/28/20264823 W GUNNISON STForest Glen45Completed14 daysInternetCity 311
7/28/20263934 W 86TH STAshburn18Completed1 dayPhone CallCity 311
7/28/20267032 S ABERDEEN STEnglewood16Completed1 dayPhone CallCity 311
7/28/20267512 S PERRY AVEGreater Grand Crossing6Completed1 dayPhone CallCity 311
7/28/20262338 N MONITOR AVEBelmont Cragin36Completed1 dayPhone CallCity 311
7/28/20261418 E 55TH STHyde Park5Completed9 daysPhone CallCity 311
7/28/20262337 N SACRAMENTO AVELogan Square1Completed1 dayPhone CallCity 311
7/28/20263813 S EMERALD AVEBridgeport11Completed8 daysPhone CallCity 311
7/28/20262719 W CHASE AVEWest Ridge50Completed1 dayPhone CallCity 311
7/28/20267538 N MAPLEWOOD AVEWest Ridge50Completed1 dayPhone CallCity 311
7/28/2026430 S CLARK STLoop34Completed15 daysPhone CallCity 311
7/28/20263924 N JANSSEN AVELake View46Completed1 dayPhone CallCity 311
7/28/20265960 N MCCOOK AVENorwood Park45Completed14 daysAlderman's OfficeCity 311
7/28/20264821 W WEST END AVEAustin28Completed7 daysInternetCity 311
7/28/20265736 N CAMPBELL AVEWest Ridge40Completed14 daysInternetCity 311
7/28/20262620 W POTOMAC AVEWest Town26Completed10 daysMobile DeviceCity 311
7/28/20266222 S KENNETH AVEWest Lawn13Completed8 daysAlderman's OfficeCity 311
7/28/20263742 W 85TH STAshburn18Completed8 daysPhone CallCity 311
7/28/20262927 W JARVIS AVEWest Ridge50Completed8 daysInternetCity 311
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