RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4510 locations in the last 30 days (4665 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

53,552 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/31/20261930 S MILLER STLower West Side25Completed11 daysMobile DeviceCity 311
8/31/20262111 N KOSTNER AVEHermosa35Completed15 daysPhone CallCity 311
8/31/20265240 W BERTEAU AVEPortage Park38Completed10 daysAlderman's OfficeCity 311
8/31/20263337 N PITTSBURGH AVEDunning38Completed11 daysInternetCity 311
8/31/20265919 S HERMITAGE AVEWest Englewood15Completed15 daysPhone CallCity 311
8/31/20263358 N PAULINA STLake View32Completed2 daysInternetCity 311
8/31/20261506 N BOSWORTH AVEWest Town1Completed11 daysInternetCity 311
8/31/20265657 W GUNNISONPortage Park45Completed14 daysSalesforce Mobile AppCity 311
8/31/20261821 W IRVING PARK RDNorth Center47Completed15 daysPhone CallCity 311
8/31/202611325 S STEWART AVERoseland21Completed4 daysMobile DeviceCity 311
8/31/20262142 N KARLOVHermosa35Completed14 daysSalesforce Mobile AppCity 311
8/31/20266228 S VERNON AVEWoodlawn20Completed9 daysMobile DeviceCity 311
8/31/20262942 N RUTHERFORD AVEMontclare36Completed10 daysPhone CallCity 311
8/31/20264511 S DR MARTIN LUTHER KING JR DRGrand Boulevard3Completed15 daysPhone CallCity 311
8/31/20265113 W WINDSOR AVEPortage Park45Completed14 daysPhone CallCity 311
8/31/20261734 N SAWYER AVEHumboldt Park26Completed10 daysMobile DeviceCity 311
8/31/20265143 N MARMORA AVEJefferson Park45Completed10 daysPhone CallCity 311
8/31/2026364 W HURON STNear North Side42Completed11 daysInternetCity 311
8/31/20262034 W EASTWOOD AVELincoln Square47Completed15 daysInternetCity 311
8/31/20264451 N ARTESIAN AVELincoln Square47Completed14 daysAlderman's OfficeCity 311
8/31/20261301 N CAMPBELL AVEWest Town26Completed15 daysMobile DeviceCity 311
8/31/20261666 W FARWELL AVERogers Park49Completed14 daysInternetCity 311
8/31/20265076 W MONROE STAustin28Completed4 daysPhone CallCity 311
8/31/20263235 N RICHMOND STAvondale33Completed15 daysInternetCity 311
8/31/20264138 S ARTESIAN AVEBrighton Park12Completed15 daysPhone CallCity 311
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