RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4485 locations in the last 30 days (4651 reports) · Last sighting 22 hours 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

52,998 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
3/30/202610340 S MILLARD AVEMount Greenwood19Completed1 dayInternetCity 311
3/27/202610340 S UNION AVERoseland21Completed3 daysPhone CallCity 311
7/13/202610341 S LEAVITT STBeverly19Completed8 daysPhone CallCity 311
8/30/202510341 S UNION AVERoseland21Completed13 daysMobile DeviceCity 311
4/26/202610342 S OEast Side10Completed1 dayMobile DeviceCity 311
8/2/202510344 S CALUMET AVERoseland9Completed4 daysPhone CallCity 311
3/30/202610345 S MILLARD AVEMount Greenwood19Completed1 dayMobile DeviceCity 311
2/21/202610345 S WHIPPLE STMount Greenwood19Completed3 daysInternetCity 311
6/16/202610349 S CENTRAL PARK AVEMount Greenwood19Completed6 daysInternetCity 311
4/27/202610349 S HEast Side10Completed1 dayInternetCity 311
4/26/202610349 S MILLARD AVEMount Greenwood19Completed2 daysMobile DeviceCity 311
3/30/202610349 S MILLARD AVEMount Greenwood19Completed1 dayMobile DeviceCity 311
8/6/202510349 S WESTERN AVEBeverly19Completed9 daysAlderman's OfficeCity 311
2/21/202610349 S WHIPPLE STMount Greenwood19Completed3 daysInternetCity 311
7/26/20251034 W DIVERSEY AVELake View44Completed10 daysMobile DeviceCity 311
7/9/20261034 W GEORGE STLake View44Completed8 daysInternetCity 311
9/17/20251034 W GEORGE STLake View44Completed6 daysInternetCity 311
7/17/20261034 W OAKDALE AVELake View44Completed12 daysMobile DeviceCity 311
8/7/20261034 W OAKDALE AVELake View44Completed13 daysPhone CallCity 311
4/12/20261034 W OAKDALE AVELake View44Completed2 daysMobile DeviceCity 311
3/29/20261034 W OAKDALE AVELake View44Completed2 daysMobile DeviceCity 311
4/27/202610350 S AVENUE GEast Side10Completed1 dayPhone CallCity 311
8/1/202510350 S CALUMET AVERoseland9Completed5 daysPhone CallCity 311
7/30/202510351 S AVENUE GEast Side10Completed5 daysPhone CallCity 311
8/13/202610353 S FEast Side10Completed14 daysInternetCity 311
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