RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4662 locations in the last 30 days (4821 reports) · Last sighting 12 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

56,073 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/27/20251929 N HARDING AVEHermosa26Completed14 daysMobile DeviceCity 311
9/23/20251929 N HARDING AVEHermosa26Completed10 daysMobile DeviceCity 311
10/1/20261929 N HARDING AVEHermosa26Open—Mobile DeviceCity 311
7/30/20251929 N HARDING AVEHermosa26Completed8 daysMobile DeviceCity 311
5/22/20261929 N HARDING AVEHermosa26Completed5 daysMobile DeviceCity 311
7/24/20261929 N HARDING AVEHermosa26Completed5 daysMobile DeviceCity 311
6/25/20261929 N HARDING AVEHermosa26Completed4 daysMobile DeviceCity 311
1/19/20261929 N HARDING AVEHermosa26Completed1 dayMobile DeviceCity 311
6/3/20261929 N KARLOV AVEHermosa26Completed5 daysMobile DeviceCity 311
7/31/20251929 N MOZART STLogan Square26Completed7 daysInternetCity 311
4/27/20261929 W BERTEAU AVENorth Center47Completed2 daysInternetCity 311
11/24/20251929 W BERWYN AVELincoln Square40Completed2 daysInternetCity 311
8/11/20251929 W CUYLER AVENorth Center47Completed10 daysAlderman's OfficeCity 311
8/7/20261929 W HURON STWest Town36Completed13 daysMobile DeviceCity 311
9/23/20251929 W WARNER AVENorth Center47Completed10 daysMobile DeviceCity 311
8/29/20261929 W WARNER AVENorth Center47Completed11 daysInternetCity 311
2/6/20261929 W WARNER AVENorth Center47Canceled3 daysPhone CallCity 311
10/20/20251930 N CLEVELAND AVELincoln Park43Completed8 daysPhone CallCity 311
12/2/20251930 N HONORE STLogan Square32Completed2 daysInternetCity 311
5/5/20261930 N HONORE STLogan Square32Completed2 daysInternetCity 311
7/13/20261930 N HONORE STLogan Square32Completed9 daysInternetCity 311
5/7/20261930 N HUMBOLDT BLVDLogan Square26Completed4 daysInternetCity 311
4/7/20261930 N RIDGEWAY AVELogan Square26Completed1 dayMobile DeviceCity 311
10/5/20261930 N SAWYER AVELogan Square26Open—InternetCity 311
8/19/20261930 N SEMINARY AVELincoln Park43Completed13 daysPhone CallCity 311
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