RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4611 locations in the last 30 days (4756 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

55,375 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
2/18/20262733 N MARSHFIELD AVELincoln Park32Completed1 dayPhone CallCity 311
5/6/202610105 S LA SALLE STRoseland9Completed1 dayPhone CallCity 311
5/14/20263206 S EMERALD AVEBridgeport11Completed1 dayPhone CallCity 311
2/5/20266807 W 63RD STClearing13Completed1 dayInternetCity 311
4/5/20263350 W CUYLER AVEIrving Park33Completed1 dayMobile DeviceCity 311
3/31/202610051 S CRANDON AVESouth Deering7Completed1 dayPhone CallCity 311
11/13/20255100 W GRACE STPortage Park30Completed1 dayAlderman's OfficeCity 311
9/22/2025814 N RIDGEWAY AVEHumboldt Park27Completed1 dayPhone CallCity 311
5/6/20266107 W WARWICK AVEDunning38Completed1 dayAlderman's OfficeCity 311
8/27/20256121 N HAMILTON AVEWest Ridge40Completed1 dayMobile DeviceCity 311
11/11/20253838 W DIVISION STHumboldt Park37Completed1 dayInternetCity 311
10/14/20258601 W CATHERINE AVEO'Hare41Completed1 dayPhone CallCity 311
3/12/20263511 N NATCHEZ AVEDunning38Completed1 dayPhone CallCity 311
7/7/20262402 E 77TH STSouth Shore7Completed1 dayPhone CallCity 311
4/14/20262059 W HASTINGS STNear West Side28Completed1 dayInternetCity 311
5/7/20266550 N SEELEY AVEWest Ridge40Completed1 dayPhone CallCity 311
2/23/2026901 W CULLERTON STLower West Side25Completed1 dayPhone CallCity 311
8/28/20251613 W HUBBARD STWest Town27Completed1 dayPhone CallCity 311
8/13/202557 W ERIE STNear North Side42Completed1 dayPhone CallCity 311
11/3/20255641 W 64TH PLClearing13Completed1 dayInternetCity 311
12/17/20251312 N DAMEN AVEWest Town1Completed1 dayInternetCity 311
5/28/20264931 W IOWA STAustin37Completed1 dayAlderman's OfficeCity 311
1/29/20262614 S HARDING AVESouth Lawndale22Completed1 dayPhone CallCity 311
4/23/20265023 S LA CROSSE AVEGarfield Ridge23Completed1 dayMobile DeviceCity 311
6/10/20262209 W HIGHLAND AVEWest Ridge50Completed1 dayPhone CallCity 311
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