RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4417 locations in the last 30 days (4580 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

57,418 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/18/20262320 E 89TH STCalumet Heights8Completed0 daysPhone CallCity 311
10/19/20262320 N CLARK STLincoln Park43Open—InternetCity 311
4/12/20262320 N KARLOV AVEHermosa35Completed1 dayMobile DeviceCity 311
10/23/20262320 N LATROBE AVEBelmont Cragin31Open—Phone CallCity 311
10/23/20252320 N MARMORA AVEBelmont Cragin36Completed5 daysMobile DeviceCity 311
8/2/20262320 N MCVICKER AVEBelmont Cragin36Completed15 daysInternetCity 311
7/31/20262320 N PARKSIDE AVEBelmont Cragin36Completed12 daysAlderman's OfficeCity 311
8/7/20262320 S HAMLIN AVESouth Lawndale22Completed6 daysInternetCity 311
5/24/20262320 S HAMLIN AVESouth Lawndale22Completed2 daysInternetCity 311
8/26/20252320 W 21ST STLower West Side25Completed10 daysAlderman's OfficeCity 311
9/27/20252320 W 21ST STLower West Side25Completed9 daysMobile DeviceCity 311
6/30/20262320 W 21ST STLower West Side25Completed7 daysMobile DeviceCity 311
8/25/20252320 W 71ST STChicago Lawn17Completed10 daysPhone CallCity 311
5/28/20262320 W 71ST STChicago Lawn17Completed1 dayPhone CallCity 311
2/12/20262320 W ADAMS STNear West Side27Completed0 daysInternetCity 311
4/14/20262320 W ADAMS STNear West Side27Completed3 daysInternetCity 311
5/26/20262320 W LUNT AVEWest Ridge50Completed3 daysInternetCity 311
9/1/20252320 W OHIO STWest Town36Completed9 daysInternetCity 311
9/8/20252320 W PETERSON AVELincoln Square40Completed11 daysInternetCity 311
9/14/20262320 W SCHUBERT AVELogan Square32Completed14 daysMobile DeviceCity 311
8/8/20262320 W SUNNYSIDE AVELincoln Square47Completed12 daysInternetCity 311
8/4/20252320 W TOUHY AVEWest Ridge50Completed7 daysInternetCity 311
9/23/20252320 W TOUHY AVEWest Ridge50Completed8 daysInternetCity 311
4/22/20262320 W TOUHY AVEWest Ridge50Completed1 dayInternetCity 311
2/18/20262321 N KNOX AVEBelmont Cragin31Completed1 dayPhone CallCity 311
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