RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4326 locations in the last 30 days (4482 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

56,145 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/13/20262067 W FARWELL AVEWest Ridge40Completed4 daysInternetCity 311
6/13/20261724 W WINNEMAC AVEUptown40Completed4 daysMobile DeviceCity 311
5/20/20266375 N PAULINA STEdgewater40Completed6 daysMobile DeviceCity 311
6/13/20265741 N FAIRFIELD AVEWest Ridge40Completed4 daysMobile DeviceCity 311
6/16/20264855 N WASHTENAW AVELincoln Square40Completed1 dayMobile DeviceCity 311
6/16/20262743 W RASCHER AVELincoln Square40Completed1 dayMobile DeviceCity 311
1/9/20262644 W BALMORAL AVELincoln Square40Completed4 daysMobile DeviceCity 311
6/21/20261928 W ARGYLE STLincoln Square40Completed5 daysInternetCity 311
2/11/20265414 N CAMPBELL AVELincoln Square40Completed0 daysMobile DeviceCity 311
5/9/20262432 W CARMEN AVELincoln Square40Completed3 daysInternetCity 311
5/10/20265249 N DAMEN AVELincoln Square40Completed2 daysPhone CallCity 311
1/21/20264917 N OAKLEY AVELincoln Square40Completed1 dayInternetCity 311
5/22/20261708 W CARMEN AVEUptown40Completed5 daysMobile DeviceCity 311
1/9/20262701 W BALMORAL AVELincoln Square40Completed4 daysMobile DeviceCity 311
7/15/20262526 W PETERSON AVEWest Ridge40Completed9 daysInternetCity 311
9/4/20256003 N PAULINA STEdgewater40Completed7 daysPhone CallCity 311
7/18/20264942 N ROCKWELL STLincoln Square40Completed9 daysMobile DeviceCity 311
1/21/20262428 W BERWYNLincoln Square40Completed1 daySalesforce Mobile AppCity 311
6/9/20265928 N TALMAN AVEWest Ridge40Completed1 dayInternetCity 311
5/31/20265400 N LINCOLN AVELincoln Square40Completed4 daysMobile DeviceCity 311
7/20/20265811 N WASHTENAW AVEWest Ridge40Completed9 daysInternetCity 311
2/9/20261717 W CATALPA AVEEdgewater40Completed1 dayPhone CallCity 311
6/7/20265023 N WINCHESTER AVELincoln Square40Completed2 daysMobile DeviceCity 311
7/23/20265728 N CAMPBELL AVEWest Ridge40Completed1 dayPhone CallCity 311
10/14/20252544 W AINSLIE STLincoln Square40Completed1 dayPhone CallCity 311
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