RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4385 locations in the last 30 days (4569 reports) · Last sighting 19 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

58,313 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/19/20265218 W WASHINGTON BLVDAustin37Completed4 daysMobile DeviceCity 311
9/22/20265218 W WASHINGTON BLVDAustin37Completed14 daysMobile DeviceCity 311
8/17/20265218 W WASHINGTON BLVDAustin37Completed16 daysMobile DeviceCity 311
5/29/20265218 W PATTERSON AVEPortage Park30Completed5 daysAlderman's OfficeCity 311
10/2/20255218 W MONTANA STBelmont Cragin31Completed13 daysMobile DeviceCity 311
8/14/20255218 W MONTANA STBelmont Cragin31Completed13 daysMobile DeviceCity 311
10/15/20265218 W DIVISION STAustin37Completed12 daysAlderman's OfficeCity 311
3/9/20265218 S PRAIRIE AVEWashington Park3Completed1 dayInternetCity 311
8/9/20255218 S MOZART STGage Park14Completed11 daysMobile DeviceCity 311
8/16/20265218 S MOZART STGage Park14Completed10 daysInternetCity 311
12/2/20255218 S MOBILE AVEGarfield Ridge23Completed1 dayInternetCity 311
11/2/20255218 S MERRIMAC AVEGarfield Ridge23Completed2 daysInternetCity 311
9/4/20265218 S MARSHFIELD AVENew City16Completed12 daysPhone CallCity 311
10/1/20265218 S MAPLEWOOD AVEGage Park14Completed18 daysPhone CallCity 311
8/14/20265218 S MAPLEWOOD AVEGage Park14Completed12 daysAlderman's OfficeCity 311
10/19/20265218 S MAPLEWOOD AVEGage Park14Open—Phone CallCity 311
9/11/20255218 S MAPLEWOOD AVEGage Park14Completed11 daysAlderman's OfficeCity 311
10/21/20265218 S KIMBARK AVEHyde Park4Completed7 daysInternetCity 311
4/13/20265218 S INDIANA AVEWashington Park3Completed1 dayMobile DeviceCity 311
10/4/20255218 N MCVICKER AVEJefferson Park45Completed11 daysInternetCity 311
8/23/20255218 N MARMORA AVEJefferson Park45Completed11 daysPhone CallCity 311
9/23/20265218 N LIANO AVEJefferson Park45Completed12 daysInternetCity 311
5/25/20265218 N LIANO AVEJefferson Park45Completed3 daysInternetCity 311
7/28/20255217 W WARWICK AVEPortage Park30Completed9 daysInternetCity 311
6/20/20265217 W WARWICK AVEPortage Park30Completed5 daysInternetCity 311
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