RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4470 locations in the last 30 days (4616 reports) · Last sighting 2 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

54,394 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/22/20261023 W WOLFRAM STLake View44Completed11 daysMobile DeviceCity 311
8/22/2026875 N HERMITAGE AVEWest Town1Completed12 daysMobile DeviceCity 311
8/22/20262810 N SEMINARY AVELake View44Completed11 daysMobile DeviceCity 311
8/22/20261122 W DIVERSEY AVELake View44Completed11 daysMobile DeviceCity 311
8/22/20261164 W DIVERSEY AVELake View44Completed11 daysMobile DeviceCity 311
8/22/20262826 N LINCOLN AVELake View32Completed13 daysMobile DeviceCity 311
8/22/20261348 W DIVERSEY AVELake View32Completed13 daysMobile DeviceCity 311
8/22/20261412 W DIVERSEY AVELake View32Completed13 daysMobile DeviceCity 311
8/22/20265704 W CORNELIA AVEPortage Park30Completed11 daysAlderman's OfficeCity 311
8/22/20263821 W 82ND STAshburn18Completed12 daysMobile DeviceCity 311
8/22/20261514 W DIVERSEY AVELake View32Completed13 daysMobile DeviceCity 311
8/22/20263030 N CHRISTIANA AVEAvondale35Completed12 daysMobile DeviceCity 311
8/22/2026727 W 48TH PLNew City15Completed12 daysMobile DeviceCity 311
8/22/20263414 W LYNDALE STLogan Square35Completed13 daysMobile DeviceCity 311
8/22/20263319 N PARIS AVEDunning38Completed13 daysInternetCity 311
8/22/20261228 W 32ND STBridgeport11Completed11 daysMobile DeviceCity 311
8/22/2026143 W SWANN STFuller Park20Completed12 daysMobile DeviceCity 311
8/22/20262434 N JANSSEN AVELincoln Park32Completed13 daysInternetCity 311
8/22/20263645 N MOZART STIrving Park35Completed2 daysInternetCity 311
8/22/20264928 S ELLIS AVEKenwood4Completed3 daysPhone CallCity 311
8/22/20264928 S ELLIS AVEKenwood4Completed3 daysPhone CallCity 311
8/22/20261713 W CORNELIA AVELake View47Completed13 daysMobile DeviceCity 311
8/22/2026828 W WAVELAND AVELake View46Completed12 daysMobile DeviceCity 311
8/22/20262331 W MONTANA STLogan Square32Completed13 daysPhone CallCity 311
8/22/2026822 N MARSHFIELD AVEWest Town1Completed12 daysMobile DeviceCity 311
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