RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4462 locations in the last 30 days (4634 reports) · Last sighting 22 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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/28/20253424 W PERSHING RDBrighton Park12Completed3 daysInternetCity 311
10/28/20256333 S KOLIN AVEWest Lawn13Completed2 daysInternetCity 311
10/28/20251116 N WOOD STWest Town1Completed2 daysInternetCity 311
10/28/20255405 N ARTESIAN AVELincoln Square40Completed6 daysInternetCity 311
10/28/20254921 N MERRIMAC AVEJefferson Park45Completed7 daysMobile DeviceCity 311
10/28/20253536 W HIRSCH STHumboldt Park26Completed6 daysInternetCity 311
10/28/20253530 W HIRSCH STHumboldt Park26Completed6 daysInternetCity 311
10/28/20255106 S NEWCASTLE AVEGarfield Ridge23Completed2 daysMobile DeviceCity 311
10/28/2025225 W 25TH PLArmour Square11Completed3 daysMobile DeviceCity 311
10/28/20251454 W IRVING PARK RDLake View47Completed5 daysMobile DeviceCity 311
10/28/20255732 W BERENICE AVEPortage Park38Completed3 daysInternetCity 311
10/28/20258000 W CORNELIA AVEDunning38Completed3 daysInternetCity 311
10/28/20255131 S GREENWOOD AVEHyde Park5Completed3 daysPhone CallCity 311
10/28/2025237 N ABERDEEN STNear West Side27Completed2 daysInternetCity 311
10/28/20251822 S AVERS AVENorth Lawndale24Completed1 dayPhone CallCity 311
10/28/20253448 N OPAL AVEDunning38Completed1 dayMobile DeviceCity 311
10/28/20254321 N ASHLAND AVELake View47Completed5 daysInternetCity 311
10/28/20255008 W BYRON STPortage Park45Completed6 daysMobile DeviceCity 311
10/29/202510443 S HALE AVEBeverly19Completed2 daysPhone CallCity 311
10/29/20251821 S AVERS AVENorth Lawndale24Completed1 dayInternetCity 311
10/29/20252431 S CHRISTIANA AVESouth Lawndale25Completed2 daysInternetCity 311
10/29/20258519 S BUFFALO AVESouth Chicago10Completed5 daysInternetCity 311
10/29/20253740 N HALSTED STLake View46Completed2 daysInternetCity 311
10/29/20255732 S MCVICKER AVEGarfield Ridge13Completed5 daysMobile DeviceCity 311
10/29/20255514 S MCVICKER AVEGarfield Ridge13Completed5 daysMobile DeviceCity 311
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