RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4274 locations in the last 30 days (4456 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

58,530 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/20/20265118 S MULLIGAN AVEGarfield Ridge23Completed0 daysInternetCity 311
10/22/20255118 S MERRIMAC AVEGarfield Ridge23Completed5 daysAlderman's OfficeCity 311
12/20/20255118 S LAKE PARK AVEHyde Park4Completed2 daysInternetCity 311
9/7/20265118 S AUSTIN AVEGarfield Ridge23Completed15 daysInternetCity 311
10/3/20265118 S AUSTIN AVEGarfield Ridge23Completed11 daysInternetCity 311
8/1/20265118 S AUSTIN AVEGarfield Ridge23Completed10 daysInternetCity 311
10/29/20265118 N WOLCOTT AVELincoln Square40Open—Mobile DeviceCity 311
8/25/20265118 N WINCHESTER AVELincoln Square40Completed15 daysPhone CallCity 311
9/4/20265118 N WINCHESTER AVELincoln Square40Completed13 daysMobile DeviceCity 311
8/25/20265118 N WINCHESTER AVELincoln Square40Completed15 daysPhone CallCity 311
5/8/20265118 N NEWLAND AVENorwood Park41Completed4 daysPhone CallCity 311
8/28/20255118 N NASHVILLE AVENorwood Park41Completed7 daysPhone CallCity 311
12/28/20255118 N LARAMIE AVEJefferson Park45Completed2 daysMobile DeviceCity 311
7/25/20265118 N CENTRAL PARK AVENorth Park39Completed12 daysInternetCity 311
8/5/20255117 W WARWICK AVEPortage Park30Completed8 daysAlderman's OfficeCity 311
10/31/20255117 W STRONG STJefferson Park45Completed5 daysMobile DeviceCity 311
5/19/20265117 W PATTERSON AVEPortage Park30Completed3 daysInternetCity 311
11/1/20255117 W DEMING PLBelmont Cragin31Completed4 daysInternetCity 311
7/24/20265117 W ALTGELD STBelmont Cragin31Completed10 daysMobile DeviceCity 311
2/16/20265117 S RACINE AVENew City20Completed1 dayInternetCity 311
5/21/20265117 S NATOMA AVEGarfield Ridge23Completed7 daysPhone CallCity 311
6/29/20265117 S NATOMA AVEGarfield Ridge23Completed8 daysPhone CallCity 311
8/28/20255117 S MERRIMAC AVEGarfield Ridge23Completed13 daysAlderman's OfficeCity 311
8/13/20255117 S KILPATRICK AVEGarfield Ridge23Completed11 daysInternetCity 311
9/16/20245117 S DORCHESTER AVEHyde Park4Completed3 daysInternetCity 311
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