RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4387 locations in the last 30 days (4552 reports) · Last sighting 15 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

57,594 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/31/20253401 N KOLMAR AVEIrving Park30Completed12 daysInternetCity 311
5/14/20264445 W LELAND AVEIrving Park39Completed6 daysPhone CallCity 311
6/23/20263125 W MONTROSE AVEIrving Park33Completed2 daysInternetCity 311
2/7/20263734 N MOZART STIrving Park35Completed2 daysInternetCity 311
7/20/20263842 N CHRISTIANA AVEIrving Park33Completed10 daysPhone CallCity 311
1/9/20263665 N ELSTON AVEIrving Park33Completed3 daysInternetCity 311
6/23/20262944 W CULLOM AVEIrving Park33Completed2 daysPhone CallCity 311
1/13/20264241 N MOZART STIrving Park33Completed1 dayInternetCity 311
5/6/20263920 N CALIFORNIA AVEIrving Park35Completed5 daysInternetCity 311
7/20/20263622 N HAMLIN AVEIrving Park30Completed10 daysInternetCity 311
1/13/20264121 N MOZART STIrving Park33Completed1 dayInternetCity 311
5/29/20264144 W HENDERSON STIrving Park30Completed5 daysInternetCity 311
6/21/20264121 W CULLOM AVEIrving Park39Completed1 dayMobile DeviceCity 311
5/29/20263311 N KILDARE AVEIrving Park30Completed5 daysInternetCity 311
5/8/20264254 N RICHMOND STIrving Park33Completed3 daysInternetCity 311
5/29/20264238 W MELROSE STIrving Park30Completed5 daysInternetCity 311
9/30/20253962 N ELSTON AVEIrving Park45Completed9 daysInternetCity 311
2/14/20264340 N KEELER AVEIrving Park39Completed6 daysMobile DeviceCity 311
6/8/20264213 W IRVING PARK RDIrving Park30Completed7 daysInternetCity 311
2/16/20264106 N KEYSTONE AVEIrving Park39Completed4 daysInternetCity 311
1/11/20263669 N ELSTON AVEIrving Park33Completed1 dayMobile DeviceCity 311
6/9/20263834 N DRAKE AVEIrving Park35Completed1 dayPhone CallCity 311
10/8/20253705 N ST LOUIS AVEIrving Park35Completed12 daysAlderman's OfficeCity 311
10/13/20254215 N MOZART STIrving Park33Completed9 daysInternetCity 311
1/10/20263610 W BELLE PLAINE AVEIrving Park33Completed2 daysMobile DeviceCity 311
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