RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4378 locations in the last 30 days (4564 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

58,530 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/27/20252741 S HARDING AVESouth Lawndale22Completed3 daysInternetCity 311
10/8/20262741 S HARDING AVESouth Lawndale22Completed12 daysInternetCity 311
9/26/20262741 S HARDING AVESouth Lawndale22Completed11 daysInternetCity 311
9/17/20252741 S KOMENSKY AVESouth Lawndale22Completed5 daysPhone CallCity 311
6/10/20262741 S SHIELDS AVEArmour Square11Completed1 dayInternetCity 311
3/31/20262741 S ST LOUIS AVESouth Lawndale22Completed1 dayAlderman's OfficeCity 311
10/19/20252741 W AUGUSTA BLVDWest Town36Completed5 daysInternetCity 311
10/25/20252741 W FARRAGUT AVELincoln Square40Completed6 daysMobile DeviceCity 311
6/1/20262741 W HADDON AVEWest Town36Completed2 daysPhone CallCity 311
8/14/20262741 W MAYPOLE AVEEast Garfield Park27Completed17 daysPhone CallCity 311
11/5/20252741 W MONTROSE AVEIrving Park33Completed0 daysInternetCity 311
6/10/20262742 N ASHLAND AVELincoln Park32Completed1 dayInternetCity 311
4/28/20262742 N CENTRAL PARK AVELogan Square35Completed2 daysInternetCity 311
8/1/20252742 N CENTRAL PARK AVELogan Square35Completed18 daysPhone CallCity 311
10/2/20262742 N LAWNDALE AVELogan Square35Completed14 daysMobile DeviceCity 311
9/2/20252742 N LAWNDALE AVELogan Square35Completed13 daysMobile DeviceCity 311
8/29/20262742 S HAMLIN AVESouth Lawndale22Completed6 daysPhone CallCity 311
8/11/20262742 S MILLARD AVESouth Lawndale22Completed2 daysMobile DeviceCity 311
6/23/20262742 S PRINCETON AVEArmour Square11Completed1 dayPhone CallCity 311
9/25/20252742 W 16TH STNorth Lawndale28Completed7 daysInternetCity 311
1/7/20262742 W 23RD STSouth Lawndale25Completed2 daysInternetCity 311
6/19/20262742 W AUGUSTA BLVDWest Town26Completed5 daysInternetCity 311
3/26/20262743 N LAWNDALE AVELogan Square35Completed1 dayInternetCity 311
7/21/20262743 N PINE GROVE AVELincoln Park43Completed6 daysPhone CallCity 311
10/14/20252743 N SOUTHPORT AVELincoln Park32Completed7 daysMobile DeviceCity 311
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