RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4546 locations in the last 30 days (4701 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.

32080fewer → more

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

53,761 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/28/20257742 S EAST END AVESouth Shore8Completed8 daysPhone CallCity 311
8/7/20269139 S ELLIS AVEBurnside8Completed12 daysInternetCity 311
7/26/20257952 S MERRILL AVESouth Chicago8Completed10 daysPhone CallCity 311
7/26/20257951 S MERRILL AVESouth Chicago8Completed10 daysPhone CallCity 311
9/9/20257654 S CREGIER AVESouth Shore8Completed1 dayPhone CallCity 311
8/6/20268300 S DREXEL AVEChatham8Completed13 daysAlderman's OfficeCity 311
1/22/20261511 E 87TH STCalumet Heights8Completed1 dayInternetCity 311
8/1/20258613 S CONSTANCE AVEAvalon Park8Completed4 daysAlderman's OfficeCity 311
8/30/2025936 E 84TH STChatham8Completed10 daysPhone CallCity 311
5/27/20267747 S GREENWOOD AVEGreater Grand Crossing8Completed2 daysInternetCity 311
8/31/20258139 S INGLESIDE AVEChatham8Completed9 daysPhone CallCity 311
8/1/20258627 S CONSTANCE AVEAvalon Park8Completed4 daysAlderman's OfficeCity 311
8/29/20258142 S INGLESIDE AVEChatham8Completed11 daysPhone CallCity 311
6/23/20261800 E 78TH STSouth Shore8Completed1 dayInternetCity 311
1/21/20269000 S DAUPHIN AVEChatham8Completed1 dayPhone CallCity 311
9/5/20257914 S EUCLID AVESouth Chicago8Completed10 daysAlderman's OfficeCity 311
10/21/20251537 E 84TH STAvalon Park8Completed3 daysInternetCity 311
1/21/20267544 S STONY ISLAND AVESouth Shore8Completed1 dayPhone CallCity 311
7/25/2025902 E 83RD STChatham8Completed11 daysInternetCity 311
5/27/20268115 S HARPER AVEAvalon Park8Completed6 daysPhone CallCity 311
7/31/20258253 S KIMBARK AVEAvalon Park8Completed5 daysMobile DeviceCity 311
10/13/20259521 S AVALON AVEPullman8Completed2 daysPhone CallCity 311
9/29/20267716 S MARYLAND AVEGreater Grand Crossing8Open—Phone CallCity 311
5/23/20269248 S COTTAGE GROVE AVEChatham8Completed4 daysPhone CallCity 311
7/30/2025533 E 87TH STChatham8Completed6 daysInternetCity 311
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