RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4545 locations in the last 30 days (4700 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

53,915 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/8/20251321 W COLUMBIA AVERogers Park49Completed10 daysInternetCity 311
10/19/20251321 W HENDERSON STLake View44Completed4 daysPhone CallCity 311
4/23/20261321 W HURON STWest Town27Completed1 dayInternetCity 311
9/23/20261321 W MELROSE STLake View44Open—Mobile DeviceCity 311
8/8/202513221 S BUFFALO AVEHegewisch10Completed6 daysPhone CallCity 311
7/9/202613224 S COMMERCIAL AVEHegewisch10Completed8 daysPhone CallCity 311
3/11/20261322 N GREENVIEW AVEWest Town1Completed6 daysInternetCity 311
8/3/20251322 N HARDING AVEHumboldt Park36Completed12 daysMobile DeviceCity 311
9/3/20261322 N MAPLEWOOD AVEWest Town26Completed13 daysPhone CallCity 311
7/11/20261322 S INDIANA PKWYNear South Side3Completed12 daysPhone CallCity 311
4/30/20261322 W 112TH STMorgan Park21Completed4 daysPhone CallCity 311
3/11/20261322 W 112TH STMorgan Park21Completed1 dayPhone CallCity 311
5/28/20261322 W 112TH STMorgan Park21Completed1 dayPhone CallCity 311
3/5/20261322 W 112TH STMorgan Park21Completed1 dayPhone CallCity 311
3/5/20261322 W 112TH STMorgan Park21Completed1 dayPhone CallCity 311
5/13/20261322 W 112TH STMorgan Park21Completed5 daysPhone CallCity 311
8/23/20261322 W 17TH PLLower West Side25Completed10 daysMobile DeviceCity 311
4/28/20261322 W 18TH STLower West Side25Completed6 daysPhone CallCity 311
3/5/20261322 W 32ND PLBridgeport11Completed1 dayInternetCity 311
12/31/20251322 W 32ND PLBridgeport11Completed2 daysInternetCity 311
9/4/20251322 W 32ND PLBridgeport11Completed12 daysInternetCity 311
3/18/20261322 W 32ND PLBridgeport11Completed1 dayInternetCity 311
5/5/20261322 W 32ND PLBridgeport11Completed1 dayInternetCity 311
9/9/20261322 W HENDERSON STLake View44Completed12 daysPhone CallCity 311
9/29/20261322 W HENDERSON STLake View44Open—Phone CallCity 311
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