RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4494 locations in the last 30 days (4661 reports) · Last sighting 24 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

52,821 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/14/20268711 W CATHERINE AVEO'Hare41Completed2 daysPhone CallCity 311
8/4/20268411 W BRYN MAWR AVEO'Hare41Completed16 daysPhone CallCity 311
8/6/20268601 W CATHERINE AVEO'Hare41Completed1 dayPhone CallCity 311
9/12/20255309 N DELPHIA AVEO'Hare41Completed12 daysInternetCity 311
4/8/20268613 W FOSTER AVEO'Hare41Completed1 dayPhone CallCity 311
8/4/20268711 W CATHERINE AVEO'Hare41Completed15 daysPhone CallCity 311
7/31/20258416 W GREGORY STO'Hare41Completed7 daysPhone CallCity 311
9/19/20258426 W GREGORY STO'Hare41Completed11 daysAlderman's OfficeCity 311
7/29/20258432 W CATALPA AVEO'Hare41Completed9 daysInternetCity 311
9/15/20258701 W HIGGINS RDO'Hare41Completed10 daysInternetCity 311
7/23/20258618 W CATALPA AVEO'Hare41Completed12 daysInternetCity 311
5/6/20268500 W CATHERINE AVEO'Hare41Completed1 dayPhone CallCity 311
7/26/20268622 W CATHERINE AVEO'Hare41Completed9 daysInternetCity 311
4/29/20268650 W BERWYN AVEO'Hare41Completed5 daysPhone CallCity 311
3/18/20268426 W GREGORY STO'Hare41Completed1 dayAlderman's OfficeCity 311
4/19/20268613 W FOSTER AVEO'Hare41Completed2 daysInternetCity 311
4/16/20268611 W FOSTER AVEO'Hare41Completed1 dayPhone CallCity 311
4/15/20268600 W FOSTER AVEO'Hare41Completed1 dayInternetCity 311
1/5/20268711 W CATHERINE AVEO'Hare41Completed1 dayPhone CallCity 311
8/8/20265501 N CUMBERLAND AVEO'Hare41Completed13 daysPhone CallCity 311
8/24/20268601 W CATHERINE AVEO'Hare41Completed1 dayPhone CallCity 311
2/26/20268518 W CATALPA AVEO'Hare41Completed1 dayInternetCity 311
10/14/20258601 W CATHERINE AVEO'Hare41Completed1 dayPhone CallCity 311
12/2/20251201 W 108TH STMorgan Park21Completed1 dayInternetCity 311
9/4/20261110 W 112TH PLMorgan Park21Completed14 daysPhone CallCity 311
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