RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4484 locations in the last 30 days (4645 reports) · Last sighting 21 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/10/20264420 S CALUMET AVEGrand Boulevard3Completed1 dayPhone CallCity 311
12/14/2025435 E 45TH PLGrand Boulevard3Completed0 daysInternetCity 311
1/16/202628 W 18TH STNear South Side3Completed4 daysInternetCity 311
12/13/20252245 S MICHIGAN AVENear South Side3Completed2 daysInternetCity 311
4/30/20261506 S WABASH AVENear South Side3Completed5 daysMobile DeviceCity 311
8/24/20264520 S DR MARTIN LUTHER KING JR DRGrand Boulevard3Completed3 daysPhone CallCity 311
5/20/20265330 S WABASH AVEWashington Park3Completed2 daysAlderman's OfficeCity 311
8/18/20264746 S PRAIRIE AVEGrand Boulevard3Completed8 daysInternetCity 311
12/10/2025415 E PERSHING RDGrand Boulevard3Completed1 dayMobile DeviceCity 311
12/12/2025350 E 47TH STGrand Boulevard3Completed3 daysInternetCity 311
6/26/20264746 S FORRESTVILLE AVEGrand Boulevard3Completed5 daysInternetCity 311
12/8/2025528 E 45TH STGrand Boulevard3Completed1 dayInternetCity 311
5/12/20264200 S INDIANA AVEGrand Boulevard3Completed1 dayPhone CallCity 311
8/26/2025418 E 45TH PLGrand Boulevard3Completed3 daysAlderman's OfficeCity 311
10/12/20255015 S PRAIRIE AVEGrand Boulevard3Completed5 daysInternetCity 311
1/16/20261700 S DEARBORN STNear South Side3Completed4 daysInternetCity 311
6/17/20263630 S PRAIRIE AVEDouglas3Completed1 dayPhone CallCity 311
9/25/20264444 S INDIANA AVEGrand Boulevard3Open—Phone CallCity 311
7/31/20254736 S ST LAWRENCE AVEGrand Boulevard3Completed5 daysMobile DeviceCity 311
7/31/20254735 S FORRESTVILLE AVEGrand Boulevard3Completed5 daysPhone CallCity 311
6/9/20264342 S STATE STGrand Boulevard3Completed2 daysMobile DeviceCity 311
5/10/20264527 S FORRESTVILLE AVEGrand Boulevard3Completed2 daysPhone CallCity 311
8/4/20254220 S MICHIGAN AVEGrand Boulevard3Completed1 dayPhone CallCity 311
8/5/20264315 S PRAIRIE AVEGrand Boulevard3Completed1 dayPhone CallCity 311
3/30/20264228 S MICHIGAN AVEGrand Boulevard3Completed1 dayPhone CallCity 311
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