RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4385 locations in the last 30 days (4540 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

53,341 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/27/20263840 W 86TH PLAshburn18Completed9 daysInternetCity 311
9/23/20268139 S FAIRFIELD AVEAshburn18Open—Alderman's OfficeCity 311
5/26/20267945 S WHIPPLE STAshburn18Completed6 daysPhone CallCity 311
8/7/20268244 S SAWYER AVEAshburn18Completed10 daysInternetCity 311
8/25/20263749 W 84TH PLAshburn18Completed9 daysMobile DeviceCity 311
5/22/20263030 W 83RD PLAshburn18Completed5 daysPhone CallCity 311
5/26/20264015 W 83RD STAshburn18Completed1 day—City 311
9/21/20268254 S TROY STAshburn18Open—Phone CallCity 311
5/26/20267926 S CHRISTIANA AVEAshburn18Completed1 dayPhone CallCity 311
5/25/20263809 W 83RD STAshburn18Completed2 daysInternetCity 311
7/13/20268005 S SAWYER AVEAshburn18Completed10 daysPhone CallCity 311
5/24/20267769 S KOMENSKY AVEAshburn18Completed3 daysInternetCity 311
5/23/20267774 S KOMENSKY AVEAshburn18Completed4 daysInternetCity 311
5/22/20263544 W 78TH STAshburn18Completed5 daysAlderman's OfficeCity 311
5/22/20268231 S CAMPBELL AVEAshburn18Completed5 daysAlderman's OfficeCity 311
5/22/20262516 W 83RD STAshburn18Completed5 daysAlderman's OfficeCity 311
7/20/20263819 W 84TH STAshburn18Completed3 daysPhone CallCity 311
7/17/20263901 W 85TH STAshburn18Completed6 daysInternetCity 311
7/6/20263301 W 79TH STAshburn18Completed3 daysPhone CallCity 311
7/20/20263934 W 85TH STAshburn18Completed3 daysAlderman's OfficeCity 311
10/21/20253815 W 84TH STAshburn18Completed3 daysMobile DeviceCity 311
2/26/20263735 W 83RD PLAshburn18Completed0 daysMobile DeviceCity 311
5/22/20262444 W 83RD STAshburn18Completed5 daysAlderman's OfficeCity 311
8/25/20268206 S TALMAN AVEAshburn18Completed9 daysPhone CallCity 311
8/26/20268239 S MOZART STAshburn18Completed8 daysInternetCity 311
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