RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4530 locations in the last 30 days (4685 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

54,257 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/29/20265805 S RICHMOND STGage Park15Completed13 daysPhone CallCity 311
9/3/20263644 W 62ND PLWest Lawn23Completed13 daysPhone CallCity 311
9/18/20262258 N MANGO AVEBelmont Cragin36Completed13 daysPhone CallCity 311
7/30/202631 W OHIO STNear North Side42Completed13 daysMobile DeviceCity 311
9/18/20263705 W POTOMAC AVEHumboldt Park36Completed13 daysMobile DeviceCity 311
9/4/20265118 N WINCHESTER AVELincoln Square40Completed13 daysMobile DeviceCity 311
8/5/20255801 W HENDERSON STPortage Park30Completed13 daysAlderman's OfficeCity 311
9/10/20251346 W HENDERSON STLake View44Completed13 daysMobile DeviceCity 311
8/20/20255271 N NORTHWEST HWYJefferson Park45Completed13 daysPhone CallCity 311
8/18/20261968 W FOSTER AVELincoln Square40Completed13 daysMobile DeviceCity 311
8/28/20255056 N WOLCOTT AVELincoln Square40Completed13 daysInternetCity 311
9/15/20265918 W EDDY STPortage Park30Completed13 daysMobile DeviceCity 311
8/28/20256051 N NASSAU AVENorwood Park45Completed13 daysAlderman's OfficeCity 311
9/2/20258235 S DREXEL AVEChatham8Completed13 daysPhone CallCity 311
7/10/2026601 W 48TH STNew City15Completed13 daysPhone CallCity 311
9/18/20265420 N NATCHEZ AVENorwood Park41Completed13 daysPhone CallCity 311
9/11/20254531 N DOVER STUptown46Completed13 daysAlderman's OfficeCity 311
9/2/20253235 W HOLLYWOOD AVENorth Park39Completed13 daysPhone CallCity 311
8/26/202510922 S WASHTENAW AVEMorgan Park19Completed13 daysMobile DeviceCity 311
9/3/20253253 W GRACE STIrving Park33Completed13 daysPhone CallCity 311
8/27/20265109 S NEW ENGLAND AVEGarfield Ridge23Completed13 daysPhone CallCity 311
9/10/20264825 W FLETCHER STBelmont Cragin31Completed13 daysInternetCity 311
9/18/20261444 W MONTROSE AVEUptown47Completed13 daysInternetCity 311
7/14/20261638 E 92ND PLCalumet Heights8Completed13 daysPhone CallCity 311
9/3/20252048 W SHAKESPEARE AVELogan Square32Completed13 daysPhone CallCity 311
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