RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4525 locations in the last 30 days (4673 reports) · Last sighting 2 days 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.

32080fewer → more

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

54,551 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/17/2026318 W 27TH STArmour Square11Completed12 daysInternetCity 311
8/21/20264255 W WRIGHTWOOD AVEHermosa31Completed12 daysAlderman's OfficeCity 311
9/11/20267556 S HARVARD AVEGreater Grand Crossing6Completed12 daysPhone CallCity 311
8/6/20252720 N WAYNE AVELincoln Park32Completed12 daysPhone CallCity 311
8/13/20252016 N LARAMIE AVEBelmont Cragin36Completed12 daysPhone CallCity 311
9/5/20261126 N AVERS AVEHumboldt Park37Completed12 daysMobile DeviceCity 311
8/27/20253831 S UNION AVEBridgeport11Completed12 daysPhone CallCity 311
7/22/20266418 N SAYRE AVENorwood Park41Completed12 daysInternetCity 311
7/31/20255106 W MELROSE STPortage Park31Completed12 daysAlderman's OfficeCity 311
7/23/20261764 W CULLOM AVELake View47Completed12 daysInternetCity 311
8/29/2026912 N LEAMINGTON AVEAustin37Completed12 daysInternetCity 311
7/15/2026644 W 32ND STBridgeport11Completed12 daysMobile DeviceCity 311
7/31/20255104 W MELROSE STPortage Park31Completed12 daysAlderman's OfficeCity 311
9/4/20251901 W DIVISION STWest Town1Completed12 daysInternetCity 311
7/23/20261614 W WILSON AVEUptown47Completed12 daysInternetCity 311
8/22/20257725 N PAULINA STRogers Park49Completed12 daysMobile DeviceCity 311
9/10/20251041 W 93RD STWashington Heights21Completed12 daysPhone CallCity 311
7/24/20263235 W OLIVE AVENorth Park39Completed12 daysAlderman's OfficeCity 311
7/16/20263516 N OLEANDER AVEDunning38Completed12 daysPhone CallCity 311
8/6/20254229 N KEYSTONE AVEIrving Park39Completed12 daysPhone CallCity 311
8/9/20254241 N FRANCISCO AVEIrving Park33Completed12 daysPhone CallCity 311
8/27/20255613 S MASSASOIT AVEGarfield Ridge13Completed12 daysPhone CallCity 311
7/15/20266129 W WAVELAND AVEDunning38Completed12 daysInternetCity 311
7/31/20251419 N MAPLEWOOD AVEWest Town1Completed12 daysPhone CallCity 311
9/12/2025900 S STATE STLoop4Completed12 daysInternetCity 311
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