RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4460 locations in the last 30 days (4632 reports) · Last sighting 23 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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/27/20262517 S CENTRAL PARK AVESouth Lawndale22Completed3 daysPhone CallCity 311
9/22/20262517 S CENTRAL PARK AVESouth Lawndale22Completed9 daysPhone CallCity 311
4/1/20262517 S CLAREMONT AVELower West Side25Completed1 dayPhone CallCity 311
9/12/20252517 S ST LOUIS AVESouth Lawndale22Completed7 daysAlderman's OfficeCity 311
8/27/20262517 S ST LOUIS AVESouth Lawndale22Completed8 daysPhone CallCity 311
4/22/20262517 S ST LOUIS AVESouth Lawndale22Completed2 daysAlderman's OfficeCity 311
7/21/20262517 S ST LOUIS AVESouth Lawndale22Completed9 daysPhone CallCity 311
6/12/20262517 S ST LOUIS AVESouth Lawndale22Completed0 daysAlderman's OfficeCity 311
10/6/20262517 W AINSLIE STLincoln Square40Completed15 daysInternetCity 311
8/5/20252517 W BERWYN AVELincoln Square40Completed1 dayPhone CallCity 311
8/27/20252517 W BERWYN AVELincoln Square40Completed13 daysPhone CallCity 311
9/4/20252517 W COYLE AVEWest Ridge40Completed13 daysPhone CallCity 311
8/29/20252517 W MEDILL AVELogan Square1Completed11 daysMobile DeviceCity 311
7/22/20262517 W MEDILL AVELogan Square1Completed9 daysMobile DeviceCity 311
10/10/20262518 N FAIRFIELD AVELogan Square1Completed16 daysInternetCity 311
7/7/20262518 N MARMORA AVEBelmont Cragin30Completed9 daysMobile DeviceCity 311
8/19/20252518 N MARMORA AVEBelmont Cragin30Completed10 daysMobile DeviceCity 311
8/5/20262518 N MONITOR AVEBelmont Cragin30Completed15 daysPhone CallCity 311
8/10/20262518 W 46TH PLBrighton Park15Completed10 daysInternetCity 311
9/29/20252518 W PENSACOLA AVENorth Center47Completed7 daysPhone CallCity 311
8/18/20262519 N HALSTED STLincoln Park43Completed14 daysMobile DeviceCity 311
9/9/20262519 N LOWELL AVEHermosa31Completed13 daysInternetCity 311
4/13/20262519 N LOWELL AVEHermosa31Completed2 daysPhone CallCity 311
10/17/20252519 N LOWELL AVEHermosa31Completed3 daysPhone CallCity 311
4/10/20262519 N OAK PARK AVEMontclare36Completed3 daysMobile DeviceCity 311
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