RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4251 locations in the last 30 days (4433 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
6/27/20265359 S KOSTNER AVEWest Elsdon23Completed3 daysPhone CallCity 311
6/29/20262327 W LUNTWest Ridge50Completed3 daysSalesforce Mobile AppCity 311
5/25/20264921 N MERRIMAC AVEJefferson Park45Completed3 daysMobile DeviceCity 311
4/24/20263435 W CARMEN AVENorth Park39Completed3 daysMobile DeviceCity 311
9/19/20255329 W DEMING PLBelmont Cragin31Completed3 daysPhone CallCity 311
6/1/20265300 N LUNA AVEJefferson Park45Completed3 daysPhone CallCity 311
9/19/20258605 W CATHERINE AVEO'Hare41Completed3 daysPhone CallCity 311
4/14/20262322 N LAWNDALE AVELogan Square35Completed3 daysMobile DeviceCity 311
10/21/20254852 S LAPORTE AVEGarfield Ridge22Completed3 daysMobile DeviceCity 311
5/8/20263610 W CULLOM AVEIrving Park33Completed3 daysInternetCity 311
10/14/2025955 N WINCHESTER AVEWest Town36Completed3 daysInternetCity 311
7/3/20231029 E 46TH STKenwood4Completed3 daysMobile DeviceCity 311
2/28/20261755 W HENDERSON STLake View32Completed3 daysPhone CallCity 311
6/1/20262820 W MORSEWest Ridge50Completed3 daysSalesforce Mobile AppCity 311
3/8/202610452 S MEast Side10Completed3 daysInternetCity 311
12/19/20252751 N SEMINARY AVELincoln Park43Completed3 daysPhone CallCity 311
6/1/20265317 N AUSTIN AVEJefferson Park45Completed3 daysPhone CallCity 311
3/2/2026229 W 111TH PLRoseland9Completed3 daysMobile DeviceCity 311
4/27/20264400 N MALDEN STUptown46Completed3 daysInternetCity 311
10/24/2025904 E 83RD STChatham8Completed3 daysPhone CallCity 311
9/19/20252328 N KENNETH AVEHermosa31Completed3 daysPhone CallCity 311
5/5/20262618 W LOGAN BLVDLogan Square1Completed3 daysInternetCity 311
5/11/20262734 S HAMLIN AVESouth Lawndale22Completed3 daysPhone CallCity 311
9/30/20259204 S DREXEL AVEBurnside8Completed3 daysPhone CallCity 311
7/17/20264646 W DIVERSEY AVEBelmont Cragin31Completed3 daysAlderman's OfficeCity 311
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