RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4717 locations in the last 30 days (4880 reports) · Last sighting 10 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

54,128 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/14/20252825 N CAMBRIDGE AVELake View44Completed19 daysMobile DeviceCity 311
8/14/20251700 W WALLEN AVERogers Park49Completed12 daysPhone CallCity 311
8/14/20252250 N MASON AVEBelmont Cragin36Completed11 daysPhone CallCity 311
8/14/20252840 N KOSTNER AVEHermosa31Completed12 daysMobile DeviceCity 311
8/14/20258558 S KILBOURN AVEAshburn18Completed4 daysInternetCity 311
8/14/20252850 W BERWYN AVELincoln Square39Completed12 daysMobile DeviceCity 311
8/14/20251225 N PULASKI RDHumboldt Park37Completed12 daysMobile DeviceCity 311
8/14/20252220 W EASTWOOD AVELincoln Square47Completed4 daysInternetCity 311
8/14/20254246 W CONGRESS PKWYWest Garfield Park28Completed12 daysInternetCity 311
8/14/2025534 N SAWYER AVEHumboldt Park27Completed12 daysInternetCity 311
8/14/202511025 S VERNON AVERoseland9Completed15 daysInternetCity 311
8/14/20252906 N MONT CLARE AVEMontclare29Completed10 daysInternetCity 311
8/14/20255350 N DAMEN AVELincoln Square40Completed13 daysInternetCity 311
8/14/2025420 W 42ND STNew City11Completed4 daysMobile DeviceCity 311
8/14/20252724 N MULLIGAN AVEBelmont Cragin36Completed11 daysMobile DeviceCity 311
8/14/2025438 W 43RD STNew City11Completed4 daysMobile DeviceCity 311
8/14/20256320 W WARWICK AVEDunning38Completed7 daysMobile DeviceCity 311
8/14/20252940 N MOBILE AVEBelmont Cragin30Completed12 daysInternetCity 311
8/14/20255732 N HERMITAGE AVEEdgewater40Completed13 daysInternetCity 311
8/14/20253526 N FREMONT STLake View44Completed13 daysInternetCity 311
8/14/20252427 W CHARLESTON STLogan Square1Completed8 daysInternetCity 311
8/14/20252830 N LAWNDALE AVEAvondale35Completed10 daysMobile DeviceCity 311
8/14/20253511 W FILLMORE STNorth Lawndale24Completed12 daysInternetCity 311
8/15/20251344 W BYRON STLake View46Completed0 daysInternetCity 311
8/15/20252310 W 18TH PLLower West Side25Completed12 daysInternetCity 311
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