RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4427 locations in the last 30 days (4582 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

56,073 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/10/20261945 W THOMAS STWest Town1Completed14 daysInternetCity 311
8/12/20251945 W THOMAS STWest Town1Completed10 daysPhone CallCity 311
9/28/20261946 N CLARK STLincoln Park43Completed9 daysInternetCity 311
8/24/20261946 N SEMINARY AVELincoln Park43Completed10 daysInternetCity 311
9/15/20261946 N SEMINARY AVELincoln Park43Completed14 daysPhone CallCity 311
9/15/20251946 N SEMINARY AVELincoln Park43Completed9 daysPhone CallCity 311
6/29/20261946 N SEMINARY AVELincoln Park43Completed3 daysInternetCity 311
6/11/20261946 N SEMINARY AVELincoln Park43Completed4 daysInternetCity 311
7/9/20261946 N WOOD STLogan Square32Completed11 daysPhone CallCity 311
7/22/20261946 W ARMITAGE AVELogan Square32Completed13 daysInternetCity 311
1/13/20261946 W GREENLEAF AVERogers Park49Completed1 dayPhone CallCity 311
5/8/20261946 W ROSCOE STNorth Center32Completed3 daysPhone CallCity 311
10/30/20251947 N BURLING STLincoln Park43Completed5 daysMobile DeviceCity 311
6/26/20261947 N MAUD AVELincoln Park43Completed5 daysMobile DeviceCity 311
8/24/20261947 S TRUMBULL AVENorth Lawndale24Completed17 daysInternetCity 311
5/28/20261947 W CHICAGO AVEWest Town36Completed4 daysInternetCity 311
4/22/20261947 W CHICAGO AVEWest Town36Completed1 dayInternetCity 311
5/6/20261947 W CHICAGO AVEWest Town36Completed2 daysMobile DeviceCity 311
6/15/20261947 W ROSCOE STNorth Center32Completed1 dayMobile DeviceCity 311
9/30/20251948 N MOHAWK STLincoln Park43Completed8 daysMobile DeviceCity 311
5/14/20261948 W FARRAGUT AVELincoln Square40Completed1 dayMobile DeviceCity 311
6/1/20261948 W FARRAGUT AVELincoln Square40Completed3 daysMobile DeviceCity 311
6/13/20261948 W HENDERSON STNorth Center32Completed4 daysMobile DeviceCity 311
10/13/20261948 W HENDERSON STNorth Center32Open—InternetCity 311
9/22/20251948 W MAYPOLE AVENear West Side27Completed8 daysMobile DeviceCity 311
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