RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4451 locations in the last 30 days (4607 reports) · Last sighting 18 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

56,073 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/28/20261938 N LARRABEE STLincoln Park43Completed5 daysAlderman's OfficeCity 311
5/28/20261938 N LARRABEE STLincoln Park43Completed5 daysAlderman's OfficeCity 311
9/16/20251938 N LOWELL AVEHermosa26Completed13 daysAlderman's OfficeCity 311
5/28/20261938 N MOHAWK STLincoln Park43Completed1 dayAlderman's OfficeCity 311
5/28/20261938 N MOHAWK STLincoln Park43Completed1 dayAlderman's OfficeCity 311
5/14/20261938 N SEMINARY AVELincoln Park43Completed4 daysMobile DeviceCity 311
2/5/20261938 N SHEFFIELD AVELincoln Park43Completed1 dayInternetCity 311
7/31/20251938 N SHEFFIELD AVELincoln Park43Completed7 daysInternetCity 311
5/1/20261938 N SHEFFIELD AVELincoln Park43Completed4 daysInternetCity 311
11/7/20251938 N SHEFFIELD AVELincoln Park43Completed3 daysInternetCity 311
8/7/20261938 N SHEFFIELD AVELincoln Park43Completed14 daysInternetCity 311
10/11/20251938 S DRAKE AVENorth Lawndale24Completed10 daysMobile DeviceCity 311
8/2/20261938 S TRUMBULL AVENorth Lawndale24Completed2 daysMobile DeviceCity 311
3/24/20261938 W 21ST PLLower West Side25Completed2 daysPhone CallCity 311
11/29/20251938 W BELLE PLAINE AVENorth Center47Completed2 daysMobile DeviceCity 311
9/23/20251938 W BELLE PLAINE AVENorth Center47Completed9 daysMobile DeviceCity 311
10/6/20251938 W HENDERSON STNorth Center32Completed8 daysInternetCity 311
11/3/20251938 W HENDERSON STNorth Center32Completed1 dayPhone CallCity 311
8/2/20261938 W SCHOOL STNorth Center32Completed10 daysInternetCity 311
5/5/20261939 N KEDVALE AVEHermosa26Completed2 daysInternetCity 311
5/4/20261939 N KEDZIE AVELogan Square26Completed2 daysPhone CallCity 311
9/4/20251939 N KEDZIE AVELogan Square26Completed12 daysPhone CallCity 311
9/29/20251939 N KILBOURN AVEHermosa26Completed7 daysMobile DeviceCity 311
1/17/20261939 N KILBOURN AVEHermosa26Completed3 daysMobile DeviceCity 311
10/22/20251939 N LA CROSSE AVEBelmont Cragin36Completed5 daysInternetCity 311
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