RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4627 locations in the last 30 days (4783 reports) · Last sighting 16 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.

32080fewer → more

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

55,880 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/28/20251905 N BISSELL STLincoln Park43Completed13 daysMobile DeviceCity 311
9/2/20261905 N BISSELL STLincoln Park43Completed13 daysMobile DeviceCity 311
8/19/20261905 N KOSTNER AVEHermosa26Completed13 daysInternetCity 311
9/21/20261905 N KOSTNER AVEHermosa26Completed11 daysInternetCity 311
3/29/20261905 N KOSTNER AVEHermosa26Completed2 daysInternetCity 311
5/18/20261905 N KOSTNER AVEHermosa26Completed4 daysInternetCity 311
6/15/20261905 N KOSTNER AVEHermosa26Completed2 daysInternetCity 311
12/4/20251905 N KOSTNER AVEHermosa26Completed1 dayInternetCity 311
5/29/20261905 W LUNT AVERogers Park49Completed3 daysPhone CallCity 311
9/20/20251906 N KILDARE AVEHermosa26Completed11 daysMobile DeviceCity 311
10/7/20261906 S CANALPORT AVELower West Side25Open—InternetCity 311
9/17/20261906 S HAMLIN AVENorth Lawndale24Completed13 daysPhone CallCity 311
7/30/20261906 W BERWYN AVELincoln Square40Completed12 daysInternetCity 311
8/20/20261906 W BERWYN AVELincoln Square40Completed1 dayPhone CallCity 311
5/12/20261906 W BYRON STNorth Center47Completed3 daysInternetCity 311
10/13/20251906 W BYRON STNorth Center47Completed3 daysInternetCity 311
10/27/20251906 W LARCHMONT AVENorth Center47Completed2 daysInternetCity 311
7/15/20261906 W PATTERSON AVENorth Center47Completed13 daysMobile DeviceCity 311
2/22/20261906 W SUNNYSIDE AVELincoln Square47Completed1 dayInternetCity 311
7/29/20261907 N KEDZIE AVELogan Square26Completed13 daysMobile DeviceCity 311
9/8/20251907 N KENNETH AVEHermosa26Completed11 daysPhone CallCity 311
8/27/20251907 S TROY STNorth Lawndale24Completed13 daysPhone CallCity 311
7/1/20261907 W ADDISON STNorth Center47Completed8 daysInternetCity 311
9/4/20261907 W BELLE PLAINE AVENorth Center47Completed14 daysInternetCity 311
10/8/20261907 W BERTEAU AVENorth Center47Open—InternetCity 311
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