RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4357 locations in the last 30 days (4539 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

58,313 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/26/20269631 S CARPENTER STWashington Heights21Completed3 daysMobile DeviceCity 311
4/10/20261629 S ALLPORT STLower West Side25Completed3 daysPhone CallCity 311
4/10/20262234 W 18TH PLLower West Side25Completed3 daysPhone CallCity 311
11/23/20254539 N MASON AVEPortage Park38Completed3 daysMobile DeviceCity 311
12/12/20254881 W BLOOMINGDALE AVEAustin37Completed3 daysPhone CallCity 311
10/31/202510437 S CHRISTIANA AVEMount Greenwood19Completed3 daysPhone CallCity 311
5/1/20265128 S MASON AVEGarfield Ridge23Completed3 daysPhone CallCity 311
10/28/20259250 S BENNETT AVECalumet Heights8Completed3 daysPhone CallCity 311
10/16/20261512 W BIRCHWOOD AVERogers Park49Completed3 daysPhone CallCity 311
3/23/20262630 S HARDING AVESouth Lawndale22Completed3 daysPhone CallCity 311
3/20/20264106 N KEYSTONE AVEIrving Park39Completed3 daysInternetCity 311
6/29/20262300 W 48TH PLNew City15Completed3 daysPhone CallCity 311
5/24/20263304 N AVERS AVEAvondale30Completed3 daysMobile DeviceCity 311
3/8/20269211 S EWING AVESouth Chicago10Completed3 daysInternetCity 311
11/21/202510245 S PRINCETON AVERoseland9Completed3 daysPhone CallCity 311
2/6/20261834 N MAYFIELD AVEAustin29Completed3 daysAlderman's OfficeCity 311
9/27/20251519 W MONTANA STLincoln Park32Completed3 daysInternetCity 311
2/28/20264439 S WALLACE STNew City15Completed3 daysPhone CallCity 311
11/17/202510205 S AVENUE NEast Side10Completed3 daysWalk-inCity 311
10/17/20254536 N GREENVIEW AVEUptown47Completed3 daysAlderman's OfficeCity 311
4/27/20264414 N MONTICELLO AVEAlbany Park33Completed3 daysInternetCity 311
3/20/20262001G N HONORE STLogan Square32Completed3 daysMobile DeviceCity 311
5/12/20264524 W LAWRENCE AVEAlbany Park39Completed3 daysPhone CallCity 311
6/8/20265633 S NORMANDY AVEGarfield Ridge13Completed3 daysPhone CallCity 311
3/20/20263235 W OLIVE AVENorth Park39Completed3 daysPhone CallCity 311
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