RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4324 locations in the last 30 days (4514 reports) · Last sighting 10 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

58,615 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/8/20261533 W 105TH STBeverly19Completed8 daysAlderman's OfficeCity 311
9/30/20252339 N KARLOV AVEHermosa35Completed8 daysMobile DeviceCity 311
10/16/20253410 W CHICAGO AVEHumboldt Park27Completed8 daysPhone CallCity 311
9/2/20265042 N MELVINA AVEJefferson Park45Completed8 daysPhone CallCity 311
8/20/20256327 N TALMAN AVEWest Ridge50Completed8 daysAlderman's OfficeCity 311
8/26/20265900 S DR MARTIN LUTHER KING JR DRWashington Park20Completed8 daysPhone CallCity 311
8/17/20265036 S ELLIS AVEKenwood4Completed8 daysPhone CallCity 311
9/30/20252555 W CATALPA AVELincoln Square40Completed8 daysInternetCity 311
8/20/20252719 W GREENLEAF AVEWest Ridge50Completed8 daysInternetCity 311
8/27/202611261 S MILLARD AVEMount Greenwood19Completed8 daysPhone CallCity 311
9/30/20252849 N HAMLIN AVEAvondale35Completed8 daysPhone CallCity 311
9/29/20251216 W PRATT AVERogers Park49Completed8 daysPhone CallCity 311
7/31/20252812 N MULLIGAN AVEBelmont Cragin30Completed8 daysAlderman's OfficeCity 311
7/2/20263754 N SPAULDING AVEIrving Park33Completed8 daysMobile DeviceCity 311
9/29/20256252 N NAGLE AVENorwood Park45Completed8 daysPhone CallCity 311
7/14/20261722 W ESTES AVERogers Park49Completed8 daysInternetCity 311
9/29/2026743 W 50TH PLNew City20Completed8 daysPhone CallCity 311
7/27/20265808 S FAIRFIELD AVEGage Park15Completed8 daysPhone CallCity 311
8/10/20263353 W 79TH STAshburn18Completed8 daysMobile DeviceCity 311
9/14/20265319 S NATOMA AVEGarfield Ridge23Completed8 daysPhone CallCity 311
6/16/20264309 N MASONPortage Park38Completed8 daysSalesforce Mobile AppCity 311
9/11/20254219 W LELAND AVEAlbany Park39Completed8 daysPhone CallCity 311
9/10/20254701 N LAWNDALE AVEAlbany Park33Completed8 daysPhone CallCity 311
9/24/20252920 N SEELEY AVENorth Center32Completed8 daysAlderman's OfficeCity 311
10/20/20254714 S DAMEN AVENew City15Completed8 daysPhone CallCity 311
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