RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4524 locations in the last 30 days (4690 reports) · Last sighting 18 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

52,998 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/15/2025907 N HERMITAGE AVEWest Town1Completed10 daysMobile DeviceCity 311
5/27/2026907 N HERMITAGE AVEWest Town1Completed2 daysMobile DeviceCity 311
11/3/2025907 N FAIRFIELD AVEWest Town36Completed1 dayPhone CallCity 311
10/21/2025907 N FAIRFIELD AVEWest Town36Completed1 dayPhone CallCity 311
5/27/2026906 W LAKESIDE PLUptown46Completed6 daysInternetCity 311
3/9/2026906 W BARRY AVELake View44Completed3 daysMobile DeviceCity 311
8/18/2025906 W BARRY AVELake View44Completed15 daysMobile DeviceCity 311
8/16/2026906 W BARRY AVELake View44Completed11 daysInternetCity 311
3/5/2026906 S RACINE AVENear West Side28Completed5 daysInternetCity 311
6/8/2026906 S RACINE AVENear West Side28Completed4 daysInternetCity 311
6/27/2026906 S CENTRAL PARK AVENorth Lawndale24Completed5 daysInternetCity 311
6/9/2026906 S CENTRAL PARK AVENorth Lawndale24Completed1 dayInternetCity 311
5/27/2026906 N WOOD STWest Town36Completed5 daysInternetCity 311
6/5/2026906 N HOMAN AVEHumboldt Park27Completed3 daysMobile DeviceCity 311
5/28/2026906 N ASHLAND AVEWest Town1Completed1 dayMobile DeviceCity 311
8/1/2026906 N ASHLAND AVEWest Town1Completed10 daysMobile DeviceCity 311
5/18/20269068 S SOUTH CHICAGO AVECalumet Heights7Completed4 daysPhone CallCity 311
1/15/2026905 W WILLOW STLincoln Park43Completed1 dayInternetCity 311
12/6/2025905 W LAKESIDE PLUptown46Completed3 daysMobile DeviceCity 311
8/25/2025905 W LAKESIDE PLUptown46Completed8 daysMobile DeviceCity 311
3/9/2026905 W LAKESIDE PLUptown46Completed3 daysMobile DeviceCity 311
12/12/2025905 W LAKESIDE PLUptown46Completed3 daysMobile DeviceCity 311
7/31/2026905 W CORNELIA AVELake View44Completed12 daysInternetCity 311
8/5/2025905 W 19TH STLower West Side25Completed9 daysMobile DeviceCity 311
5/18/2026905 E 100TH STPullman8Completed2 daysPhone CallCity 311
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