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
9/2/20258430 W GREGORY STO'Hare41Completed10 daysAlderman's OfficeCity 311
8/26/20268430 S HERMITAGE AVEAuburn Gresham18Completed8 daysPhone CallCity 311
8/19/2025842 W WAVELAND AVELake View46Completed14 daysInternetCity 311
5/4/2026842 W WAVELAND AVELake View46Completed2 daysMobile DeviceCity 311
10/5/2025842 W ALDINE AVELake View44Completed4 daysMobile DeviceCity 311
8/9/2025842 S ADA STNear West Side28Completed6 daysMobile DeviceCity 311
6/8/2026842 N LECLAIRE AVEAustin37Completed2 daysAlderman's OfficeCity 311
10/15/2025842 N CALIFORNIA AVEWest Town36Completed1 dayMobile DeviceCity 311
7/2/2026842 E 40TH STOakland4Completed7 daysMobile DeviceCity 311
5/27/20268429 S HONORE STAuburn Gresham18Completed5 daysPhone CallCity 311
5/28/20268429 S BURNHAM AVESouth Chicago7Completed4 daysPhone CallCity 311
9/25/20258429 S BURNHAM AVESouth Chicago7Completed4 daysPhone CallCity 311
8/30/20268428 S HERMITAGE AVEAuburn Gresham18Completed5 daysPhone CallCity 311
9/19/20258426 W GREGORY STO'Hare41Completed11 daysAlderman's OfficeCity 311
3/18/20268426 W GREGORY STO'Hare41Completed1 dayAlderman's OfficeCity 311
8/26/20268426 W BRODMAN AVEO'Hare38Completed8 daysInternetCity 311
5/13/20268426 S ESCANABA AVESouth Chicago10Completed1 dayAlderman's OfficeCity 311
9/2/20258425 W SUNNYSIDE AVEO'Hare38Completed13 daysAlderman's OfficeCity 311
6/29/20268425 S HONORE STAuburn Gresham18Completed2 daysPhone CallCity 311
10/28/20258422 S KNOX AVEAshburn18Completed2 daysInternetCity 311
10/3/20258421 S SANGAMON STAuburn Gresham17Completed3 daysPhone CallCity 311
8/26/20258421 S SANGAMON STAuburn Gresham17Completed14 daysPhone CallCity 311
8/19/20268420 S ST LAWRENCE AVEChatham6Completed12 daysMobile DeviceCity 311
8/26/20258420 S MACKINAW AVESouth Chicago10Completed14 daysAlderman's OfficeCity 311
2/17/20268420 S BAKER AVESouth Chicago10Completed1 dayPhone CallCity 311
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