RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4517 locations in the last 30 days (4668 reports) · Last sighting 19 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

54,350 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
5/11/20261410 W CORNELIA AVELake View44Completed3 daysInternetCity 311
3/6/20261722 W BELLE PLAINE AVELake View47Completed4 daysPhone CallCity 311
7/25/20263531 N BROADWAYLake View46Completed10 daysMobile DeviceCity 311
8/31/20263358 N PAULINA STLake View32Completed2 daysInternetCity 311
12/31/20253205 N HALSTED STLake View44Completed2 daysInternetCity 311
7/24/20251416 W DIVERSEY AVELake View32Completed11 daysInternetCity 311
8/31/20263647 N JANSSEN AVELake View44Completed9 daysPhone CallCity 311
4/5/20261104 W OAKDALE AVELake View44Completed1 dayMobile DeviceCity 311
2/19/20263922 N ASHLANDLake View47Completed1 daySalesforce Mobile AppCity 311
8/26/20251549 W BARRY AVELake View32Completed13 daysInternetCity 311
9/25/2025635 W BELMONT AVELake View44Completed5 daysMobile DeviceCity 311
7/16/2026815 W BRADLEY PLLake View46Completed11 daysInternetCity 311
10/1/20261038 W OAKDALE AVELake View44Open—InternetCity 311
5/10/20263132 N SEMINARY AVELake View44Completed4 daysInternetCity 311
2/13/2026530 W SURF STLake View44Completed3 daysPhone CallCity 311
10/20/2025610 W BRIAR PLLake View44Completed3 daysPhone CallCity 311
10/2/20263054 N RACINE AVELake View32Open—Phone CallCity 311
9/14/20261628 W IRVING PARK RDLake View47Completed14 daysPhone CallCity 311
5/10/20262922 N SHEFFIELD AVELake View44Completed4 daysMobile DeviceCity 311
5/3/20263160 N CAMBRIDGE AVELake View44Completed1 dayMobile DeviceCity 311
4/24/20263853 N JANSSEN AVELake View46Completed4 daysPhone CallCity 311
11/7/20253456 N LAKE SHORE DR SBLake View44Completed6 daysInternetCity 311
4/3/20263355 N SOUTHPORT AVELake View44Completed3 daysPhone CallCity 311
4/4/20263805 N LAKEWOOD AVELake View44Completed2 daysInternetCity 311
5/19/20261600 W IRVING PARK RDLake View47Completed2 daysInternetCity 311
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