RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4370 locations in the last 30 days (4529 reports) · Last sighting 13 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

56,389 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/31/20262640 W CARMEN AVELincoln Square40Completed11 daysMobile DeviceCity 311
8/18/20252500 N KEELER AVEHermosa31Completed11 daysMobile DeviceCity 311
9/4/2025824 W ARMITAGE AVELincoln Park43Completed11 daysInternetCity 311
7/2/20266258 W PATTERSON AVEDunning38Completed11 daysInternetCity 311
9/21/20263056 N GRESHAM AVEAvondale35Completed11 daysInternetCity 311
9/14/20264053 W 83RD STAshburn18Completed11 daysInternetCity 311
9/11/20254420 S FAIRFIELD AVEBrighton Park12Completed11 daysPhone CallCity 311
8/28/20251263 N SPRINGFIELD AVEHumboldt Park36Completed11 daysInternetCity 311
7/20/20268114 S ELIZABETH STAuburn Gresham17Completed11 daysPhone CallCity 311
8/24/20262840 N CENTRAL PARK AVEAvondale35Completed11 daysInternetCity 311
7/18/20263110 N WASHTENAW AVEAvondale35Completed11 daysMobile DeviceCity 311
9/25/20257115 S ST LAWRENCE AVEGreater Grand Crossing6Completed11 daysMobile DeviceCity 311
9/24/20267100 S ASHLAND AVEWest Englewood17Completed11 daysPhone CallCity 311
9/18/20251254 N AVERS AVEHumboldt Park36Completed11 daysMobile DeviceCity 311
10/5/202611416 S MORGAN STMorgan Park21Completed11 daysPhone CallCity 311
7/31/20251943 N HONORE STLogan Square32Completed11 daysMobile DeviceCity 311
10/5/202611412 S MORGAN STMorgan Park21Completed11 daysPhone CallCity 311
9/26/20266247 W WARWICK AVEDunning38Completed11 daysPhone CallCity 311
9/20/20265410 S INDIANA AVEWashington Park3Completed11 daysInternetCity 311
9/18/20253839 W GRAND AVEHumboldt Park36Completed11 daysMobile DeviceCity 311
7/26/20263225 W OLIVE AVENorth Park39Completed11 daysInternetCity 311
7/20/20268245 S ADA STAuburn Gresham17Completed11 daysAlderman's OfficeCity 311
9/14/20253601 W WOLFRAM STAvondale35Completed11 daysInternetCity 311
8/16/20261609 W FARGO AVERogers Park49Completed11 daysInternetCity 311
8/16/20262052 W ESTES AVERogers Park49Completed11 daysInternetCity 311
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