RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4286 locations in the last 30 days (4470 reports) · Last sighting 17 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
11/13/20252800 N MOBILE AVEBelmont Cragin30Completed1 dayAlderman's OfficeCity 311
2/13/20262800 N MOBILE AVEBelmont Cragin30Completed3 daysAlderman's OfficeCity 311
7/2/20262800 N PARKSIDE AVEBelmont Cragin30Completed8 daysAlderman's OfficeCity 311
4/3/20262800 N PINE GROVE AVELake View44Completed3 daysPhone CallCity 311
10/13/20262800 N SEMINARY AVELake View44Completed15 daysMobile DeviceCity 311
8/24/20262800 S HARDING AVESouth Lawndale22Completed10 daysAlderman's OfficeCity 311
5/10/20262800 S KARLOV AVESouth Lawndale22Completed2 daysPhone CallCity 311
10/9/20252800 S KARLOV AVESouth Lawndale22Completed11 daysPhone CallCity 311
5/10/20262800 S KEDVALE AVESouth Lawndale22Completed4 daysPhone CallCity 311
5/10/20262800 S KOMENSKY AVESouth Lawndale22Completed3 daysPhone CallCity 311
10/21/20262800 S MILLARD AVESouth Lawndale22Completed8 daysPhone CallCity 311
9/1/20252800 S SAINT LOUIS AVESouth Lawndale22Completed11 daysInternetCity 311
6/9/20262800 S WELLS STArmour Square11Completed2 daysPhone CallCity 311
6/11/20262800 S WENTWORTH AVEArmour Square11Completed0 daysMobile DeviceCity 311
5/8/20262800 W 59TH STGage Park15Completed5 daysPhone CallCity 311
6/22/20262800 W 82ND STAshburn18Completed4 daysPhone CallCity 311
8/23/20262800 W CHICAGO AVEWest Town36Completed11 daysInternetCity 311
10/6/20252800 W FULTON STEast Garfield Park27Completed4 daysPhone CallCity 311
8/27/20252800 W LAWRENCE AVELincoln Square40Completed13 daysMobile DeviceCity 311
8/8/20252800 W NORTH AVEWest Town26Completed6 daysInternetCity 311
8/4/20252800 W SEIPP STAshburn18Completed7 daysInternetCity 311
5/13/20262801 E 77TH PLSouth Shore7Completed1 dayPhone CallCity 311
5/9/20262801 E 96TH STSouth Deering10Completed3 daysPhone CallCity 311
5/11/20262801 E 96TH STSouth Deering10Completed1 dayMobile DeviceCity 311
3/18/20262801 N CAMPBELL AVEAvondale35Completed1 dayInternetCity 311
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