RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4248 locations in the last 30 days (4430 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

58,530 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
12/1/20253336 W POTOMAC AVEHumboldt Park26Completed2 daysMobile DeviceCity 311
12/1/20252445 N MASON AVEBelmont Cragin30Completed1 dayMobile DeviceCity 311
12/1/20253607 W WOLFRAM STAvondale35Completed1 dayInternetCity 311
12/1/20258341 S KEATING AVEAshburn18Completed1 dayMobile DeviceCity 311
12/1/20252301 W MORSE AVEWest Ridge40Completed1 dayMobile DeviceCity 311
12/1/20252831 N LOWELL AVEHermosa31Completed1 dayMobile DeviceCity 311
12/1/20254508 N MULLIGAN AVEPortage Park38Completed1 dayInternetCity 311
12/1/20255154 N ELSTON AVEForest Glen45Completed1 dayInternetCity 311
12/2/20253521 W DOUGLAS BLVDNorth Lawndale24Completed1 dayInternetCity 311
12/2/20252424 W THOMAS STWest Town26Completed1 dayInternetCity 311
12/2/20253648 W DIVERSEY AVEAvondale35Completed1 dayMobile DeviceCity 311
12/2/20258500 S KNOX AVEAshburn18Completed1 dayPhone CallCity 311
12/2/202511040 S HARDING AVEMount Greenwood19Completed1 dayPhone CallCity 311
12/2/20253854 W 110TH PLMount Greenwood19Completed1 dayPhone CallCity 311
12/2/202511034 S HARDING AVEMount Greenwood19Completed1 dayPhone CallCity 311
12/2/20251613 W HUBBARD STWest Town27Completed1 dayPhone CallCity 311
12/2/20255910 W DAKIN STPortage Park38Completed1 dayPhone CallCity 311
12/2/20253222 N NEENAH AVEDunning38Completed1 dayPhone CallCity 311
12/2/20254608 N MELVINA AVEPortage Park38Completed1 dayPhone CallCity 311
12/2/20254040 N LECLAIRE AVEPortage Park38Completed1 dayPhone CallCity 311
12/2/20254500 W ADAMSWest Garfield Park28Completed1 daySalesforce Mobile AppCity 311
12/2/20259236 S THROOP STWashington Heights21Completed1 dayPhone CallCity 311
12/2/20255628 S WINCHESTER AVEWest Englewood15Completed1 dayPhone CallCity 311
12/2/20252333 W MONTANA STLogan Square32Completed2 daysMobile DeviceCity 311
12/2/202510119 S HARDING AVEMount Greenwood19Completed1 dayPhone CallCity 311
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