RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4609 locations in the last 30 days (4762 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

54,983 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/13/20261615 N NEWCASTLE AVEAustin29Completed3 daysPhone CallCity 311
10/8/20251615 N PARKSIDE AVEAustin29Completed2 daysAlderman's OfficeCity 311
8/3/20261615 N WHIPPLE STHumboldt Park26Completed14 daysMobile DeviceCity 311
6/24/20261615 N WHIPPLE STHumboldt Park26Completed5 daysMobile DeviceCity 311
7/30/20261615 S CALIFORNIA BLVDNorth Lawndale24Completed20 daysInternetCity 311
4/14/20261615 S CALIFORNIA BLVDNorth Lawndale24Completed1 dayInternetCity 311
9/30/20251615 S CALIFORNIA BLVDNorth Lawndale24Completed6 daysInternetCity 311
7/31/20261615 S CLARK STNear South Side11Completed13 daysInternetCity 311
10/9/20251615 S CLARK STNear South Side3Completed8 daysInternetCity 311
8/26/20261615 S THROOP STLower West Side25Completed13 daysInternetCity 311
5/13/20261615 W BRYN MAWR AVEEdgewater40Completed2 daysInternetCity 311
7/24/20261615 W BRYN MAWR AVEEdgewater40Completed3 daysPhone CallCity 311
8/15/20251615 W CHICAGO AVEWest Town1Completed10 daysMobile DeviceCity 311
11/13/20251615 W CHICAGO AVEWest Town1Completed4 daysInternetCity 311
3/26/20261615 W CHICAGO AVEWest Town1Completed0 daysMobile DeviceCity 311
5/28/20261615 W CHICAGO AVEWest Town1Completed1 dayInternetCity 311
4/24/20261615 W CHICAGO AVEWest Town1Completed3 daysMobile DeviceCity 311
3/26/20261615 W GREGORY STEdgewater40Completed0 daysInternetCity 311
9/18/20251615 W HIGHLAND AVEEdgewater40Completed11 daysMobile DeviceCity 311
9/29/20251615 W HURON STWest Town1Completed9 daysMobile DeviceCity 311
7/16/20261615 W HURON STWest Town1Completed13 daysMobile DeviceCity 311
9/10/20261615 W MONTROSE AVELake View47Completed12 daysMobile DeviceCity 311
8/3/20261615 W WILSON AVEUptown47Completed11 daysInternetCity 311
7/10/20261615 W WINONA STUptown40Completed6 daysMobile DeviceCity 311
6/2/20261616 N HUMBOLDT BLVDHumboldt Park26Completed3 daysMobile DeviceCity 311
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