RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4557 locations in the last 30 days (4712 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

55,880 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/2/20264310 S PRAIRIE AVEGrand Boulevard3Completed1 dayPhone CallCity 311
8/2/20264819 W CORNELIA AVEPortage Park31Completed10 daysInternetCity 311
8/2/20267126 S MICHIGAN AVEGreater Grand Crossing6Completed7 daysPhone CallCity 311
8/2/20267145 S EMERALD AVEEnglewood6Completed7 daysInternetCity 311
8/2/20263639 W WOLFRAM STAvondale35Completed10 daysMobile DeviceCity 311
8/2/20263600 W WOLFRAM STAvondale35Completed10 daysMobile DeviceCity 311
8/2/20261938 W SCHOOL STNorth Center32Completed10 daysInternetCity 311
8/2/20265836 S MOODY AVEGarfield Ridge13Completed10 daysMobile DeviceCity 311
8/2/202613333 S BALTIMORE AVEHegewisch10Completed1 dayPhone CallCity 311
8/2/2026824 N ASHLAND AVEWest Town1Completed8 daysMobile DeviceCity 311
8/2/20263237 W 83RD STAshburn18Completed11 daysMobile DeviceCity 311
8/2/20264457 W DEMING PLHermosa31Completed10 daysInternetCity 311
8/2/20262830 N MCVICKER AVEBelmont Cragin30Completed10 daysInternetCity 311
8/2/20262164 N MOBILE AVEBelmont Cragin36Completed15 daysInternetCity 311
8/2/20266308 W MELROSE STDunning30Completed10 daysInternetCity 311
8/2/20266311 W SCHOOL STDunning30Completed10 daysInternetCity 311
8/2/20266306 W MELROSE STDunning30Completed10 daysInternetCity 311
8/2/20261230 N SPRINGFIELD AVEHumboldt Park37Completed2 daysInternetCity 311
8/2/20264323 W CRYSTAL STHumboldt Park37Completed10 daysInternetCity 311
8/2/20262240 N LEAMINGTON AVEBelmont Cragin26Completed11 daysInternetCity 311
8/2/20269335 S LAFLIN STWashington Heights21Completed12 daysPhone CallCity 311
8/2/20261517 W BARRY AVELake View32Completed11 daysMobile DeviceCity 311
8/2/20264525 N AUSTIN AVEPortage Park38Completed4 daysInternetCity 311
8/2/20262320 N MCVICKER AVEBelmont Cragin36Completed15 daysInternetCity 311
8/2/20262026 W CORTEZ STWest Town1Completed14 daysInternetCity 311
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