RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4464 locations in the last 30 days (4624 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
12/20/20258357 S CONSTANCE AVEAvalon Park8Completed2 daysInternetCity 311
7/9/20268356 S MACKINAW AVESouth Chicago10Completed8 daysPhone CallCity 311
6/27/20268356 S KNOX AVEAshburn18Completed4 daysInternetCity 311
8/19/20268356 S DREXEL AVEChatham8Completed5 daysPhone CallCity 311
8/24/20268356 S DREXEL AVEChatham8Completed2 daysPhone CallCity 311
9/4/20258354 S MUSKEGON AVESouth Chicago7Completed8 daysPhone CallCity 311
4/29/20268353 S LOOMIS STAuburn Gresham17Completed2 daysPhone CallCity 311
9/21/20268353 S BRANDON AVESouth Chicago10Open—InternetCity 311
9/7/20268351 S KENNETH AVEAshburn18Completed11 daysMobile DeviceCity 311
10/30/20258350 S MORGAN STAuburn Gresham17Completed4 daysInternetCity 311
9/2/20258350 S MORGAN STAuburn Gresham17Completed8 daysInternetCity 311
9/2/2025834 W ROSCOE STLake View44Completed9 daysMobile DeviceCity 311
9/23/2025834 W ROSCOE STLake View44Completed7 daysMobile DeviceCity 311
10/7/2025834 W MONROE STNear West Side34Completed2 daysAlderman's OfficeCity 311
9/15/2025834 W MONROE STNear West Side34Completed1 dayAlderman's OfficeCity 311
8/18/2026834 W MONROE STNear West Side34Completed6 daysAlderman's OfficeCity 311
7/16/2026834 W BRADLEY PLLake View46Completed1 dayPhone CallCity 311
7/3/2026834 W BRADLEY PLLake View46Completed4 daysInternetCity 311
12/26/2025834 S OAKLEY BLVDNear West Side28Completed3 daysMobile DeviceCity 311
8/27/2025834 S CLAREMONT AVENear West Side28Completed13 daysMobile DeviceCity 311
8/9/2025834 S ADA STNear West Side28Completed10 daysInternetCity 311
10/28/2025834 N WINCHESTER AVEWest Town36Completed6 daysMobile DeviceCity 311
7/29/2026834 N GREENVIEW AVEWest Town1Completed12 daysMobile DeviceCity 311
10/27/2025834 N DAMEN AVEWest Town36Completed3 daysInternetCity 311
8/10/2026834 N DAMEN AVEWest Town36Completed10 daysPhone CallCity 311
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