RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4441 locations in the last 30 days (4619 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

58,010 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/4/20252002 W ROSCOE STNorth Center32Completed1 dayPhone CallCity 311
11/4/20252002 W ROSCOE STNorth Center32Completed1 dayAlderman's OfficeCity 311
11/4/20259746 S YALE AVERoseland9Completed2 daysPhone CallCity 311
11/4/20255616 S KARLOV AVEWest Elsdon13Completed1 dayPhone CallCity 311
11/4/20258116 S HARPER AVEAvalon Park8Completed2 daysPhone CallCity 311
11/4/20255800 W 64TH PLClearing13Completed1 dayAlderman's OfficeCity 311
11/4/20256610 S KENWOOD AVEWoodlawn20Completed1 dayPhone CallCity 311
11/4/20255717 S MOODY AVEGarfield Ridge13Completed1 dayAlderman's OfficeCity 311
11/4/20253675 N ELSTON AVEIrving Park33Completed1 dayMobile DeviceCity 311
11/4/20253673 N ELSTON AVEIrving Park33Completed1 dayMobile DeviceCity 311
11/4/20253655 N MARSHFIELD AVELake View47Completed2 daysInternetCity 311
11/4/20253700 N SPAULDING AVEIrving Park33Completed1 dayMobile DeviceCity 311
11/4/20256530 S ARTESIAN AVEChicago Lawn16Completed0 daysPhone CallCity 311
11/4/20254718 S KARLOV AVEArcher Heights14Completed1 dayPhone CallCity 311
11/4/20252554 W 38TH STBrighton Park12Completed3 daysPhone CallCity 311
11/4/20259332 S AVALON AVEBurnside8Completed6 daysInternetCity 311
11/4/20253748 N DAMEN AVENorth Center47Completed2 daysInternetCity 311
11/4/20254843 S PRAIRIE AVEGrand Boulevard3Completed1 dayMobile DeviceCity 311
11/4/20256201 W MELROSE STDunning30Completed2 daysAlderman's OfficeCity 311
11/4/20251626 W BLACKHAWK STWest Town1Completed1 dayInternetCity 311
11/4/20258259 S ST LAWRENCE AVEChatham6Completed2 daysPhone CallCity 311
11/4/20254453 N ASHLAND AVEUptown47Completed2 daysPhone CallCity 311
11/4/20258227 S WABASH AVEChatham6Completed2 daysPhone CallCity 311
11/4/20251211 W WEBSTER AVELincoln Park2Completed2 daysMobile DeviceCity 311
11/4/20258240 S WABASH AVEChatham6Completed2 daysPhone CallCity 311
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