RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4541 locations in the last 30 days (4714 reports) · Last sighting 9 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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/20/20268215 S MARYLAND AVEChatham8Completed4 daysMobile DeviceCity 311
8/20/20268245 S DREXEL AVEChatham8Completed4 daysPhone CallCity 311
8/8/20268200 S ELLIS AVEChatham8Completed11 daysInternetCity 311
8/4/2026450 E 90TH STChatham8Completed15 daysMobile DeviceCity 311
9/14/2026605 E 89TH PLChatham8Completed14 daysPhone CallCity 311
9/18/20268153 S PRAIRIE AVEChatham6Completed13 daysPhone CallCity 311
8/24/20267924 S EBERHART AVEChatham6Completed8 daysPhone CallCity 311
6/25/20267919B S DOBSON AVEChatham8Completed6 daysPhone CallCity 311
8/29/20269307 S BURNSIDE AVEChatham8Completed5 daysInternetCity 311
9/27/20268152 S DREXEL AVEChatham8Completed9 daysInternetCity 311
8/21/20268205 S PRAIRIE AVEChatham6Completed10 daysPhone CallCity 311
8/24/2026827 E 88TH PLChatham8Completed2 daysPhone CallCity 311
8/4/20268227 S WABASH AVEChatham6Completed6 daysMobile DeviceCity 311
9/14/2026533 E 89TH STChatham8Completed14 daysMobile DeviceCity 311
9/25/20268749 S WABASH AVEChatham6Completed13 daysPhone CallCity 311
9/24/20268204 S EVANS AVEChatham6Completed14 daysMobile DeviceCity 311
8/19/20268637 S VERNON AVEChatham6Completed12 daysPhone CallCity 311
8/14/20268858 S CALUMET AVEChatham6Completed10 daysPhone CallCity 311
7/25/2025902 E 83RD STChatham8Completed11 daysInternetCity 311
7/16/20268118 S HARVARD AVEChatham6Completed8 daysAlderman's OfficeCity 311
10/6/2026837 E 86TH STChatham8Completed9 daysPhone CallCity 311
9/16/2026605 E 87TH PLChatham8Completed16 daysAlderman's OfficeCity 311
8/10/20268002 S PRINCETON AVEChatham6Completed9 daysAlderman's OfficeCity 311
8/13/20268100 S KING M L JR DRChatham6Completed11 daysPhone CallCity 311
7/30/2025533 E 87TH STChatham8Completed6 daysInternetCity 311
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