RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4428 locations in the last 30 days (4589 reports) · Last sighting 15 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

53,341 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/4/20252111 W GRACE STNorth Center47Completed12 daysInternetCity 311
5/4/20262011 W BYRON STNorth Center47Completed3 daysPhone CallCity 311
4/4/20263520 N ASHLAND AVELake View47Completed1 dayInternetCity 311
5/5/20262416 W PENSACOLA AVENorth Center47Completed2 daysInternetCity 311
2/12/20262310 W BERTEAU AVENorth Center47Completed1 dayInternetCity 311
9/21/20262433 W EASTWOOD AVELincoln Square47Open—Mobile DeviceCity 311
5/14/20261550 W CORNELIA AVELake View47Completed4 daysMobile DeviceCity 311
5/3/20261702 W BELLE PLAINE AVELake View47Completed4 daysInternetCity 311
1/20/20262220 W EASTWOOD AVELincoln Square47Completed1 dayInternetCity 311
1/15/20261800 W WARNER AVENorth Center47Completed1 dayPhone CallCity 311
1/21/20263350 N WESTERN AVENorth Center47Completed1 dayMobile DeviceCity 311
7/22/20264821 N HOYNE AVELincoln Square47Completed13 daysPhone CallCity 311
5/3/20262101 W SUNNYSIDE AVELincoln Square47Completed4 daysInternetCity 311
7/1/20264347 N HERMITAGE AVELake View47Completed8 daysInternetCity 311
6/30/20261915 W GRACE STNorth Center47Completed6 daysInternetCity 311
1/21/20262025 W PENSACOLA AVENorth Center47Completed1 dayInternetCity 311
6/29/20263545 N SEELEY AVENorth Center47Completed7 daysInternetCity 311
1/15/20261757 W BELLE PLAINE AVELake View47Completed1 dayMobile DeviceCity 311
8/25/20254726 N WINCHESTER AVELincoln Square47Completed14 daysMobile DeviceCity 311
2/6/20263746 N ASHLAND AVELake View47Completed3 daysInternetCity 311
2/2/20264863 N RAVENSWOOD AVEUptown47Completed1 dayInternetCity 311
9/16/20253748 N ASHLAND AVELake View47Completed9 daysInternetCity 311
6/8/20261620 W SUNNYSIDE AVEUptown47Completed7 daysMobile DeviceCity 311
10/8/20254202 N WINCHESTER AVENorth Center47Completed7 daysInternetCity 311
2/22/20263620 N HERMITAGE AVELake View47Completed1 dayMobile DeviceCity 311
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