RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4449 locations in the last 30 days (4620 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.

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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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/29/20264800 S WOOD STNew City15Completed9 daysPhone CallCity 311
10/11/20252128 N WINCHESTER AVELogan Square32Completed9 daysPhone CallCity 311
8/26/2026116 N ABERDEEN STNear West Side27Completed9 daysInternetCity 311
7/20/20267335 W MYRTLE AVENorwood Park41Completed9 daysInternetCity 311
9/1/20257835 S SANGAMON STAuburn Gresham17Completed9 daysPhone CallCity 311
9/14/202610500 S AVENUE EEast Side10Completed9 daysPhone CallCity 311
8/20/20253710 W 60TH PLWest Lawn23Completed9 daysMobile DeviceCity 311
9/2/20253432 W 107TH STMount Greenwood19Completed9 daysInternetCity 311
8/3/20265201 N WASHTENAW AVELincoln Square40Completed9 daysMobile DeviceCity 311
9/27/20255120 S AVERS AVEWest Elsdon23Completed9 daysInternetCity 311
7/29/20254115 N KEDVALE AVEIrving Park39Completed9 daysInternetCity 311
7/7/20262443 W LELAND AVELincoln Square47Completed9 daysPhone CallCity 311
7/27/202610448 S EMERALD AVERoseland21Completed9 daysInternetCity 311
8/26/20252545 N BURLING STLincoln Park43Completed9 daysMobile DeviceCity 311
7/29/20266159 S NASHVILLE AVEClearing13Completed9 daysAlderman's OfficeCity 311
7/8/20265228 N LORING AVEJefferson Park45Completed9 daysInternetCity 311
8/4/20251817 N CLARK STLincoln Park43Completed9 daysMobile DeviceCity 311
9/15/20251745 W WALLEN AVERogers Park49Completed9 daysInternetCity 311
10/5/20252821 N MOZART STAvondale35Completed9 daysInternetCity 311
9/29/20253558 W WABANSIA AVEHumboldt Park26Completed9 daysInternetCity 311
7/27/20265235 S MEADE AVEGarfield Ridge23Completed9 daysPhone CallCity 311
7/28/20256318 W FLETCHER STBelmont Cragin30Completed9 daysAlderman's OfficeCity 311
8/12/20251502 W WILSON AVEUptown47Completed9 daysInternetCity 311
8/17/20254218 N MASON AVEPortage Park38Completed9 daysMobile DeviceCity 311
7/27/20265247 S MEADE AVEGarfield Ridge23Completed9 daysAlderman's OfficeCity 311
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