RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4361 locations in the last 30 days (4525 reports) · Last sighting 20 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

57,594 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/20/2025234 W 27TH STArmour Square11Completed9 daysInternetCity 311
7/15/20261809 S LAFLIN STLower West Side25Completed9 daysMobile DeviceCity 311
9/16/20254812 W ARGYLE STForest Glen45Completed9 daysInternetCity 311
9/1/20251945 S AVERS AVENorth Lawndale24Completed9 daysPhone CallCity 311
8/24/20265228 N CAMPBELL AVELincoln Square40Completed9 daysInternetCity 311
8/17/20264438 S PRAIRIE AVEGrand Boulevard3Completed9 daysPhone CallCity 311
8/17/20265312 W WASHINGTON BLVDAustin37Completed9 daysPhone CallCity 311
7/20/20262937 W HOWARD STWest Ridge50Completed9 daysAlderman's OfficeCity 311
9/16/20253100 N BERNARD STAvondale35Completed9 daysPhone CallCity 311
9/3/20252311 W WASHINGTON BLVDNear West Side27Completed9 daysPhone CallCity 311
7/27/20251620 N KEELER AVEHumboldt Park26Completed9 daysInternetCity 311
7/27/20262953 N MULLIGAN AVEBelmont Cragin30Completed9 daysPhone CallCity 311
9/3/20252425 N CLYBOURN AVELincoln Park32Completed9 daysInternetCity 311
9/3/20252459 N CLYBOURN AVELincoln Park32Completed9 daysInternetCity 311
8/19/20253538 W AINSLIE STAlbany Park33Completed9 daysInternetCity 311
9/29/20261454 N LUNA AVEAustin37Completed9 daysPhone CallCity 311
9/29/20252010 W RANDOLPH STNear West Side27Completed9 daysPhone CallCity 311
7/27/20265150 S NEW ENGLAND AVEGarfield Ridge23Completed9 daysAlderman's OfficeCity 311
8/25/20261222 W 33RD STBridgeport11Completed9 daysAlderman's OfficeCity 311
7/27/20253801 N HAMILTON AVENorth Center47Completed9 daysInternetCity 311
8/25/20261222 W 33RD STBridgeport11Completed9 daysAlderman's OfficeCity 311
10/12/20266550 S ABERDEEN STEnglewood16Completed9 daysPhone CallCity 311
8/25/20261222 W 33RD STBridgeport11Completed9 daysAlderman's OfficeCity 311
8/27/20252322 W BELDEN AVELogan Square32Completed9 daysMobile DeviceCity 311
10/14/20265739 W IOWA STAustin29Completed9 daysMobile DeviceCity 311
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