RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4534 locations in the last 30 days (4688 reports) · Last sighting 2 days 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

53,915 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/30/20261344 N DEAN STWest Town1Completed8 daysPhone CallCity 311
9/27/20261344 N RIDGEWAY AVEHumboldt Park36Open—Mobile DeviceCity 311
11/7/20251344 S CLARK STNear South Side3Completed3 daysInternetCity 311
12/4/20251344 W ANCONA STWest Town27Completed1 dayInternetCity 311
9/19/20261344 W ARTHUR AVERogers Park49Completed6 daysInternetCity 311
4/6/20261344 W BRYN MAWR AVEEdgewater48Completed1 dayPhone CallCity 311
8/15/20251344 W BYRON STLake View46Completed0 daysInternetCity 311
5/5/20261344 W WILSON AVEUptown46Completed1 dayInternetCity 311
7/27/20261345 N KARLOV AVEHumboldt Park36Completed11 daysMobile DeviceCity 311
4/13/20261345 S MORGAN STNear West Side28Completed1 dayMobile DeviceCity 311
8/1/20261345 W ARGYLE STUptown47Completed13 daysInternetCity 311
8/26/20251345 W BARRY AVELake View32Completed10 daysInternetCity 311
8/29/20251345 W BARRY AVELake View32Completed7 daysAlderman's OfficeCity 311
8/27/20251345 W BARRY AVELake View32Completed9 daysPhone CallCity 311
2/5/20261345 W CARMEN AVEUptown47Completed1 dayInternetCity 311
2/25/20261345 W CARMEN AVEUptown47Completed1 dayInternetCity 311
4/15/20261345 W CARMEN AVEUptown47Completed2 daysInternetCity 311
7/17/20261345 W CARMEN AVEUptown47Completed5 daysInternetCity 311
7/6/20261345 W ESTES AVERogers Park49Completed7 daysPhone CallCity 311
6/18/20261345 W WRIGHTWOOD AVELincoln Park32Completed6 daysMobile DeviceCity 311
1/8/20261345 W WRIGHTWOOD AVELincoln Park32Completed1 dayMobile DeviceCity 311
9/4/20261345 W WRIGHTWOOD AVELincoln Park32Completed13 daysMobile DeviceCity 311
10/28/20251346 N KEDZIE AVEHumboldt Park26Completed2 daysInternetCity 311
7/1/20261346 N KEDZIE AVEHumboldt Park26Completed7 daysInternetCity 311
11/17/20251346 S WABASH AVENear South Side3Completed1 dayMobile DeviceCity 311
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