RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4572 locations in the last 30 days (4727 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

53,915 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/6/20261715 N TRIPP AVEHumboldt Park26Completed13 daysInternetCity 311
8/7/20262435 W GUNNISON STLincoln Square40Completed13 daysMobile DeviceCity 311
7/24/20265113 N KOLMAR AVEAlbany Park39Completed13 daysPhone CallCity 311
9/2/20258425 W SUNNYSIDE AVEO'Hare38Completed13 daysAlderman's OfficeCity 311
8/7/20256100 W 63RD PLClearing13Completed13 daysInternetCity 311
9/8/20263617 N GREENVIEW AVELake View44Completed13 daysPhone CallCity 311
8/28/20252939 S LOWE AVEBridgeport11Completed13 daysInternetCity 311
8/19/20263057 N TROY STAvondale35Completed13 daysMobile DeviceCity 311
7/30/20261815 N KARLOV AVEHermosa26Completed13 daysPhone CallCity 311
8/21/20263039 N HONORE STNorth Center32Completed13 daysPhone CallCity 311
8/20/202610959 S GEast Side10Completed13 daysInternetCity 311
7/31/20255100 W WARWICK AVEPortage Park30Completed13 daysAlderman's OfficeCity 311
8/21/20252900 W BELDEN AVELogan Square1Completed13 daysPhone CallCity 311
9/10/20267337 S YALE AVEGreater Grand Crossing6Completed13 daysInternetCity 311
9/20/20253520 W DICKENS AVELogan Square35Completed13 daysMobile DeviceCity 311
9/9/20266350 S LAMON AVEClearing13Completed13 daysInternetCity 311
7/22/20265651 W GRACE STPortage Park38Completed13 daysPhone CallCity 311
9/3/20256201 W BERWYN AVEJefferson Park45Completed13 daysAlderman's OfficeCity 311
7/31/2026234 W 27TH STArmour Square11Completed13 daysInternetCity 311
7/28/20263536 S ARCHER AVEMcKinley Park12Completed13 daysPhone CallCity 311
8/14/20251531 N LEAMINGTON AVEAustin37Completed13 daysInternetCity 311
8/20/20263715 W WABANSIA AVEHumboldt Park26Completed13 daysMobile DeviceCity 311
8/12/20265828 W HENDERSON STPortage Park30Completed13 daysPhone CallCity 311
8/21/20261962 W DIVERSEY AVENorth Center32Completed13 daysPhone CallCity 311
8/20/20263088 N HAUSSEN CTAvondale31Completed13 daysInternetCity 311
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