RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4482 locations in the last 30 days (4647 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

52,998 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/1/20255346 N MONT CLARE AVENorwood Park41Completed6 daysMobile DeviceCity 311
8/1/20258254 W FOREST PRESERVE AVEDunning38Completed13 daysInternetCity 311
8/1/20252433 W COYLE AVEWest Ridge40Completed11 daysPhone CallCity 311
8/1/20253503 S FRANCISCO AVEBrighton Park12Completed11 daysAlderman's OfficeCity 311
8/1/20256023 S MOZART STChicago Lawn15Completed7 daysInternetCity 311
8/1/2025309 W 25THArmour Square11Completed6 daysSalesforce Mobile AppCity 311
8/1/20252742 N CENTRAL PARK AVELogan Square35Completed18 daysPhone CallCity 311
8/1/20251340 N LASALLE DRNear North Side2Completed10 daysInternetCity 311
8/1/20252007 W ADDISON STNorth Center47Completed10 daysInternetCity 311
8/1/20254135 N KEDVALE AVEIrving Park39Completed6 daysInternetCity 311
8/1/20253348 S MAY STBridgeport11Completed7 daysAlderman's OfficeCity 311
8/1/2025440 N MC CLURG CTNear North Side42Completed4 daysInternetCity 311
8/1/20252731 W BELMONTAvondale35Completed18 daysSalesforce Mobile AppCity 311
8/1/20259811 S THROOP STWashington Heights21Completed12 daysPhone CallCity 311
8/1/20256150 S NARRAGANSETT AVEClearing13Completed3 daysAlderman's OfficeCity 311
8/1/20251403 W WARNER AVELake View47Completed12 daysAlderman's OfficeCity 311
8/1/20252161 W LELAND AVELincoln Square47Completed12 daysPhone CallCity 311
8/1/20252323 W IOWA STWest Town36Completed13 daysAlderman's OfficeCity 311
8/1/2025956 N RIDGEWAY AVEHumboldt Park27Completed11 daysMobile DeviceCity 311
8/1/202510111 S YALE AVERoseland9Completed5 daysAlderman's OfficeCity 311
8/1/20253524 N OZARK AVEDunning38Completed10 daysAlderman's OfficeCity 311
8/1/20252607 W DIVISION STWest Town26Completed7 daysInternetCity 311
8/1/20251637 W MONTROSE AVELake View47Completed12 daysAlderman's OfficeCity 311
8/1/2025950 N RIDGEWAY AVEHumboldt Park27Completed10 daysMobile DeviceCity 311
8/1/20259655 S GREEN STWashington Heights21Completed11 daysPhone CallCity 311
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