RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4251 locations in the last 30 days (4433 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

58,530 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/11/20262819 N RICHMONDAvondale35Completed15 daysSalesforce Mobile AppCity 311
1/12/20262819 N RICHMONDAvondale35Completed0 daysSalesforce Mobile AppCity 311
6/8/20262819 N RICHMONDAvondale35Completed1 daySalesforce Mobile AppCity 311
5/11/20262819 N RICHMONDAvondale35Completed0 daysSalesforce Mobile AppCity 311
11/17/20252819 S CENTRAL PARK AVESouth Lawndale22Completed1 dayMobile DeviceCity 311
5/29/20262819 W BALMORAL AVELincoln Square39Completed5 daysMobile DeviceCity 311
11/20/20252819 W FULLERTON AVELogan Square1Completed1 dayPhone CallCity 311
10/22/20252819 W FULLERTON AVELogan Square1Completed1 dayPhone CallCity 311
10/6/20252819 W SHAKESPEARE AVELogan Square1Completed9 daysInternetCity 311
12/30/20252819 W SHAKESPEARE AVELogan Square1Completed1 dayInternetCity 311
9/22/20252820 N HAMLIN AVEAvondale31Completed9 daysInternetCity 311
7/30/20252820 N KILDARE AVEHermosa31Completed13 daysMobile DeviceCity 311
10/13/20252820 N KILDARE AVEHermosa31Completed8 daysInternetCity 311
7/30/20252820 N KILDARE AVEHermosa31Completed13 daysInternetCity 311
4/12/20262820 N KILDARE AVEHermosa31Completed1 dayInternetCity 311
8/6/20262820 N KILDARE AVEHermosa31Completed14 daysMobile DeviceCity 311
9/8/20262820 N MASON AVEBelmont Cragin30Completed16 daysMobile DeviceCity 311
5/8/20262820 N MONITOR AVEBelmont Cragin30Completed5 daysMobile DeviceCity 311
9/12/20262820 N MULLIGAN AVEBelmont Cragin30Completed13 daysInternetCity 311
5/6/20262820 N SOUTHPORT AVELake View32Completed1 dayMobile DeviceCity 311
8/26/20262820 S ST LOUIS AVESouth Lawndale22Completed9 daysPhone CallCity 311
7/31/20252820 W BRYN MAWR AVEWest Ridge50Completed1 dayPhone CallCity 311
5/19/20262820 W CHASE AVEWest Ridge50Completed2 daysInternetCity 311
6/1/20262820 W MORSEWest Ridge50Completed3 daysSalesforce Mobile AppCity 311
10/25/20252820 W NELSON STAvondale35Completed6 daysMobile DeviceCity 311
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