RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4470 locations in the last 30 days (4630 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/20/202510835 S AVERS AVEMount Greenwood19Completed5 daysInternetCity 311
9/15/202510835 S EGGLESTON AVERoseland21Completed8 daysInternetCity 311
11/24/202510836 S UNION AVERoseland21Completed2 daysInternetCity 311
12/11/202510836 S UNION AVERoseland21Completed1 dayInternetCity 311
9/10/202510837 S DR MARTIN LUTHER KING JR DRRoseland9Completed7 daysMobile DeviceCity 311
6/3/202610838 S HOMAN AVEMount Greenwood19Completed4 daysMobile DeviceCity 311
8/31/202610838 S HOMAN AVEMount Greenwood19Completed14 daysMobile DeviceCity 311
6/12/202610839 S AVENUE DEast Side10Completed4 daysPhone CallCity 311
10/9/202510840 S FOREST AVERoseland9Completed6 daysPhone CallCity 311
10/17/202510841 S HAMLIN AVEMount Greenwood19Completed3 daysPhone CallCity 311
6/24/202610841 S HAMLIN AVEMount Greenwood19Completed5 daysPhone CallCity 311
8/20/202510841 S HAMLIN AVEMount Greenwood19Completed14 daysAlderman's OfficeCity 311
8/11/202510841 S HAMLIN AVEMount Greenwood19Completed9 daysAlderman's OfficeCity 311
8/11/202510842 S AVENUE FEast Side10Completed3 daysPhone CallCity 311
8/11/202510842 S AVENUE FEast Side10Completed1 dayPhone CallCity 311
7/21/202510842 S AVENUE FEast Side10Completed14 daysPhone CallCity 311
10/7/202510843 S PRAIRIE AVERoseland9Completed3 daysPhone CallCity 311
10/6/202510844 S AVENUE JEast Side10Completed4 daysWalk-inCity 311
9/23/202510844 S HALSTED STMorgan Park21Completed7 daysPhone CallCity 311
10/6/202510845 S AVENUE JEast Side10Completed4 daysWalk-inCity 311
11/20/202510845 S EMERALD AVERoseland21Completed4 daysPhone CallCity 311
11/12/202510845 S EMERALD AVERoseland21Completed2 daysPhone CallCity 311
8/5/202610845 S HAMLIN AVEMount Greenwood19Completed8 daysInternetCity 311
9/24/202510845 S HAMLIN AVEMount Greenwood19Completed8 daysInternetCity 311
8/11/202510845 S HAMLIN AVEMount Greenwood19Completed9 daysInternetCity 311
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