RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4348 locations in the last 30 days (4504 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

56,145 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/30/202512 W ERIE STNear North Side42Completed2 daysInternetCity 311
4/21/20265000 W WAVELAND AVEPortage Park30Completed2 daysAlderman's OfficeCity 311
6/15/20261709 N HOYNE AVEWest Town32Completed2 daysInternetCity 311
6/3/20261618 N LOTUS AVEAustin37Completed2 daysPhone CallCity 311
12/22/20253300 N AVERS AVEAvondale30Completed2 daysAlderman's OfficeCity 311
5/3/20262736 N CENTRAL PARK AVELogan Square35Completed2 daysMobile DeviceCity 311
6/3/20261618 N LOTUS AVEAustin37Completed2 daysPhone CallCity 311
12/22/20253200 N AVERS AVEAvondale30Completed2 daysAlderman's OfficeCity 311
8/23/20252442 W THOMAS STWest Town36Completed2 daysMobile DeviceCity 311
11/17/20255934 N MULLIGAN AVENorwood Park45Completed2 daysAlderman's OfficeCity 311
6/13/20264819 N KEDVALE AVEAlbany Park39Completed2 daysInternetCity 311
3/30/20265241 W CUYLER AVEPortage Park38Completed2 daysPhone CallCity 311
5/31/20261132 W 107TH PLMorgan Park21Completed2 daysMobile DeviceCity 311
12/13/20253611 W 115TH STMount Greenwood19Completed2 daysMobile DeviceCity 311
5/31/20265544 S NEWLAND AVEGarfield Ridge13Completed2 daysMobile DeviceCity 311
12/28/20255118 N LARAMIE AVEJefferson Park45Completed2 daysMobile DeviceCity 311
2/18/20262219 N BISSELL STLincoln Park43Completed2 daysMobile DeviceCity 311
5/17/20266911 N WAYNE AVERogers Park49Completed2 daysMobile DeviceCity 311
3/10/20264440 N DOVER STUptown46Completed2 daysMobile DeviceCity 311
4/28/20263806 W 47TH STArcher Heights14Completed2 daysInternetCity 311
6/24/20262016 S MAY STLower West Side25Completed2 daysInternetCity 311
11/19/20257919 S ST LAWRENCE AVEChatham6Completed2 daysPhone CallCity 311
4/18/20263673 N ELSTON AVEIrving Park33Completed2 daysInternetCity 311
3/11/20262823 S SPAULDING AVESouth Lawndale22Completed2 daysMobile DeviceCity 311
5/3/20264648 W WASHINGTON BLVDAustin28Completed2 daysPhone CallCity 311
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