RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4693 locations in the last 30 days (4841 reports) · Last sighting 9 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

55,474 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/12/20261743 N SEDGWICK STLincoln Park43Completed1 dayInternetCity 311
10/4/20251743 N SPAULDING AVEHumboldt Park26Completed11 daysInternetCity 311
8/3/20251743 W 21ST PLLower West Side25Completed16 daysMobile DeviceCity 311
6/17/20261743 W ADDISON STLake View47Completed6 daysPhone CallCity 311
7/29/20261743 W AUGUSTA BLVDWest Town1Completed12 daysInternetCity 311
1/15/20261743 W BRYN MAWR AVEEdgewater40Completed1 dayInternetCity 311
9/22/20251743 W CHASE AVERogers Park49Completed9 daysPhone CallCity 311
8/11/20251743 W CHASE AVERogers Park49Completed7 daysInternetCity 311
5/28/20261743 W NEWPORT AVELake View47Completed5 daysInternetCity 311
9/4/20261744 E 73RD PLSouth Shore7Completed5 daysAlderman's OfficeCity 311
12/26/20251744 N CLYBOURN AVELincoln Park2Completed4 daysMobile DeviceCity 311
2/9/20261744 N CLYBOURN AVELincoln Park2Completed1 dayMobile DeviceCity 311
10/27/20251744 N SAWYER AVEHumboldt Park26Completed2 daysInternetCity 311
9/29/20261744 N WOLCOTT AVEWest Town32Open—Mobile DeviceCity 311
8/6/20261744 W 100TH STBeverly19Completed7 daysInternetCity 311
8/12/20261744 W 100TH STBeverly19Completed1 dayMobile DeviceCity 311
9/24/20251744 W BRYN MAWR AVEEdgewater40Completed8 daysPhone CallCity 311
11/14/20251744 W CARMEN AVEUptown40Completed3 daysInternetCity 311
8/3/20251744 W CERMAK RDLower West Side25Completed16 daysMobile DeviceCity 311
1/18/20261744 W LAWRENCE AVEUptown47Completed2 daysInternetCity 311
10/17/20251744 W ROSCOE STLake View47Completed7 daysMobile DeviceCity 311
4/23/20261744 W SCHOOL STLake View32Completed5 daysInternetCity 311
6/29/20261744 W SCHOOL STLake View32Completed2 daysMobile DeviceCity 311
9/7/20251745 N ARTESIAN AVEWest Town1Completed9 daysMobile DeviceCity 311
4/9/20261745 N ARTESIAN AVEWest Town1Completed1 dayMobile DeviceCity 311
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