RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4349 locations in the last 30 days (4512 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

57,594 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
3/30/20262449 W HOMER STLogan Square1Completed1 dayAlderman's OfficeCity 311
8/24/20252449 W WALTON STWest Town36Completed1 dayMobile DeviceCity 311
8/20/2025244 E 109TH STRoseland9Completed9 daysPhone CallCity 311
8/17/2025244 W 24TH PLArmour Square11Completed10 daysMobile DeviceCity 311
9/7/2026244 W 26TH STArmour Square11Completed11 daysPhone CallCity 311
5/10/2026244 W 29TH STArmour Square11Completed3 daysPhone CallCity 311
3/4/20262450 N HAMLIN AVELogan Square35Completed1 dayAlderman's OfficeCity 311
8/18/20262450 N RICHMOND STLogan Square1Completed8 daysInternetCity 311
7/28/20252450 N SEMINARY AVELincoln Park43Completed7 daysInternetCity 311
8/31/20252450 N SPRINGFIELD AVELogan Square35Completed9 daysInternetCity 311
9/2/20262450 S CENTRAL PARK AVESouth Lawndale22Completed14 daysPhone CallCity 311
9/23/20262450 S SPRINGFIELD AVESouth Lawndale22Completed2 daysAlderman's OfficeCity 311
6/12/20262450 S TROY STSouth Lawndale25Completed3 daysPhone CallCity 311
8/8/20252450 W BERTEAU AVENorth Center47Completed12 daysAlderman's OfficeCity 311
10/14/20252450 W BRADLEY PLNorth Center47Completed6 daysMobile DeviceCity 311
8/5/20262450 W BRADLEY PLNorth Center47Completed15 daysMobile DeviceCity 311
8/29/20252450 W CORTEZ STWest Town36Completed12 daysAlderman's OfficeCity 311
7/28/20262450 W DIVISION STWest Town26Completed10 daysInternetCity 311
9/13/20262450 W EASTWOOD AVELincoln Square47Completed12 daysInternetCity 311
9/9/20252450 W PETERSONWest Ridge40Completed10 daysSalesforce Mobile AppCity 311
7/30/20262451 N GREENVIEW AVELincoln Park32Completed13 daysMobile DeviceCity 311
8/13/20262451 N JANSSEN AVELincoln Park32Completed12 daysPhone CallCity 311
8/4/20262451 N JANSSEN AVELincoln Park32Completed10 daysInternetCity 311
10/17/20252451 N MASON AVEBelmont Cragin30Completed7 daysPhone CallCity 311
10/3/20262451 N MONTICELLO AVELogan Square35Completed13 daysInternetCity 311
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