RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4635 locations in the last 30 days (4790 reports) · Last sighting 20 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

55,690 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/14/20267829 W BALMORAL AVENorwood Park41Completed2 daysInternetCity 311
8/1/20256055 N NASSAU AVENorwood Park45Completed5 daysAlderman's OfficeCity 311
10/7/20265005 N NEVA AVENorwood Park41Open—Mobile DeviceCity 311
8/1/20255001 N NATOMA AVENorwood Park41Completed6 daysMobile DeviceCity 311
7/21/20255700 N MOODY AVENorwood Park45Completed11 daysAlderman's OfficeCity 311
7/26/20265037 N NORMANDY AVENorwood Park41Completed9 daysMobile DeviceCity 311
7/23/20255035 N NORDICA AVENorwood Park41Completed9 daysInternetCity 311
9/30/20265141 N NEW ENGLAND AVENorwood Park41Completed8 daysPhone CallCity 311
7/24/20255123 N SAYRE AVENorwood Park41Completed8 daysInternetCity 311
9/15/20265341 N NOTTINGHAM AVENorwood Park41Completed15 daysInternetCity 311
7/26/20256450 W FOSTER AVENorwood Park41Completed6 daysInternetCity 311
9/28/20266120 W ARDMORE AVENorwood Park45Open—Mobile DeviceCity 311
7/24/20257805 W BALMORAL AVENorwood Park41Completed8 daysInternetCity 311
8/8/20267640 W FARRAGUT AVENorwood Park41Completed13 daysInternetCity 311
8/10/20267658 W FARRAGUT AVENorwood Park41Completed11 daysInternetCity 311
8/20/20267614 W BERWYN AVENorwood Park41Completed1 dayMobile DeviceCity 311
7/20/20267015 W SUMMERDALE AVENorwood Park41Completed14 daysPhone CallCity 311
6/11/20266148 N NAGLE AVENorwood Park45Completed6 daysInternetCity 311
7/27/20255850 N MULLIGAN AVENorwood Park45Completed8 daysInternetCity 311
8/12/20267000 W BERWYN AVENorwood Park41Completed9 daysMobile DeviceCity 311
8/1/20255346 N MONT CLARE AVENorwood Park41Completed6 daysMobile DeviceCity 311
7/22/20255858 N MULLIGAN AVENorwood Park45Completed13 daysInternetCity 311
9/14/20266009 N NEOLA AVENorwood Park41Completed9 daysAlderman's OfficeCity 311
7/22/20255920 N AVONDALE AVENorwood Park41Completed12 daysMobile DeviceCity 311
7/28/20255740 N WEST WEST CIRCLE AVENorwood Park41Completed7 daysPhone CallCity 311
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