RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4616 locations in the last 30 days (4762 reports) · Last sighting yesterday

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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

55,375 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/12/20253915 N HAMILTON AVENorth Center47Completed12 daysMobile DeviceCity 311
8/27/20253637 N LARAMIE AVEPortage Park30Completed12 daysMobile DeviceCity 311
9/4/20262896 S ARCHER AVEBridgeport11Completed12 daysInternetCity 311
9/5/20262333 N OAKLEY AVELogan Square32Completed12 daysInternetCity 311
8/27/20254303 N LOWELL AVEIrving Park39Completed12 daysInternetCity 311
7/31/20256238 W BARRY AVEBelmont Cragin30Completed12 daysMobile DeviceCity 311
9/26/20267062 W DIVERSEY AVEMontclare29Completed12 daysPhone CallCity 311
8/29/20251620 S KARLOV AVENorth Lawndale24Completed12 daysMobile DeviceCity 311
8/30/20262146 W 21ST PLLower West Side25Completed12 daysInternetCity 311
9/24/20265323 W BARRY AVEBelmont Cragin31Completed12 daysInternetCity 311
9/24/20265319 W BARRY AVEBelmont Cragin31Completed12 daysInternetCity 311
8/2/20254340 W SHAKESPEARE AVEHermosa35Completed12 daysInternetCity 311
8/27/20252251 N LOREL AVEBelmont Cragin36Completed12 daysPhone CallCity 311
9/13/20265459 W BERENICE AVEPortage Park30Completed12 daysInternetCity 311
7/31/20254646 N CENTRAL PARK AVEAlbany Park33Completed12 daysMobile DeviceCity 311
9/17/20262215 S CHRISTIANA AVESouth Lawndale22Completed12 daysInternetCity 311
7/31/20256611 W CORNELIA AVEDunning38Completed12 daysInternetCity 311
9/11/20252660 E 92ND STCalumet Heights7Completed12 daysInternetCity 311
8/15/20261241 S INDEPENDENCE BLVDNorth Lawndale24Completed12 daysPhone CallCity 311
8/17/20252710 N HAMLIN AVELogan Square35Completed12 daysMobile DeviceCity 311
9/25/20263350 N NARRAGANSETT AVEDunning36Completed12 daysMobile DeviceCity 311
7/31/20261709 N HOYNE AVEWest Town32Completed12 daysInternetCity 311
9/3/20253648 N LINDER AVEPortage Park30Completed12 daysInternetCity 311
9/24/20265217 W AGATITE AVEPortage Park45Completed12 daysInternetCity 311
8/22/20252703 W THOMAS STWest Town36Completed12 daysMobile DeviceCity 311
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