RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4419 locations in the last 30 days (4580 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

57,251 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/16/20265218 S MOZART STGage Park14Completed10 daysInternetCity 311
7/29/20251152 N HARDING AVEHumboldt Park37Completed10 daysMobile DeviceCity 311
9/8/20253638 W 71ST STWest Lawn23Completed10 daysPhone CallCity 311
7/10/20261242 N MAPLEWOOD AVEWest Town26Completed10 daysPhone CallCity 311
7/27/20262321 N PARKSIDE AVEBelmont Cragin36Completed10 daysMobile DeviceCity 311
8/12/20255300 S FRANCISCO AVEGage Park14Completed10 daysPhone CallCity 311
10/10/20255937 N NAGLE AVENorwood Park45Completed10 daysPhone CallCity 311
8/25/2025625 W WRIGHTWOOD AVELincoln Park43Completed10 daysInternetCity 311
7/25/20262315 W 47TH STNew City15Completed10 daysPhone CallCity 311
10/7/20256239 W BERENICE AVEDunning38Completed10 daysPhone CallCity 311
10/5/20254831 S ADA STNew City20Completed10 daysMobile DeviceCity 311
7/24/20261421 W 17TH STLower West Side25Completed10 daysMobile DeviceCity 311
8/11/20252817 N KENNETH AVEHermosa31Completed10 daysAlderman's OfficeCity 311
9/21/2026539 E 46TH PLGrand Boulevard3Completed10 daysPhone CallCity 311
8/23/20255136 S OAK PARK AVEGarfield Ridge23Completed10 daysMobile DeviceCity 311
8/1/20252328 N LAKEWOOD AVELincoln Park2Completed10 daysAlderman's OfficeCity 311
7/3/2026535 N HAMLIN AVEHumboldt Park27Completed10 daysPhone CallCity 311
7/17/20262918 S HAYNES CTBridgeport11Completed10 daysInternetCity 311
8/24/202511253 S CENTRAL PARK AVEMount Greenwood19Completed10 daysInternetCity 311
8/3/20255247 S MEADE AVEGarfield Ridge23Completed10 daysMobile DeviceCity 311
9/9/20257163 W GRAND AVEMontclare29Completed10 daysPhone CallCity 311
7/24/20261700 S LOOMIS STLower West Side25Completed10 daysMobile DeviceCity 311
9/21/20262941 W 71ST STChicago Lawn18Completed10 daysPhone CallCity 311
9/8/20259204 S HALSTED STWashington Heights21Completed10 daysPhone CallCity 311
8/9/20267128 W FOSTER AVENorwood Park41Completed10 daysInternetCity 311
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