RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4417 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

57,418 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/1/20254005 W WELLINGTON AVEAvondale31Completed2 daysMobile DeviceCity 311
8/4/2026400 S CENTRAL PARK AVEEast Garfield Park28Completed2 daysInternetCity 311
5/5/20264332 W PARKER AVEHermosa31Completed2 daysPhone CallCity 311
7/12/20263525 N NEVA AVEDunning38Completed2 daysInternetCity 311
6/22/20263912 N NOTTINGHAM AVEDunning38Completed2 daysInternetCity 311
1/10/202611814 S LOOMIS STWest Pullman21Completed2 daysInternetCity 311
5/13/20266043 S FRANCISCO AVEChicago Lawn15Completed2 daysInternetCity 311
7/20/20265117 N GLENWOOD AVEUptown47Completed2 daysMobile DeviceCity 311
4/13/20268449 S GILBERT CTAuburn Gresham21Completed2 daysPhone CallCity 311
11/2/20253049 N OLCOTT AVEDunning29Completed2 daysMobile DeviceCity 311
4/20/20268222 S MARQUETTE AVESouth Chicago7Completed2 daysPhone CallCity 311
2/7/20263734 N MOZART STIrving Park35Completed2 daysInternetCity 311
4/11/20264113 N LARAMIE AVEPortage Park38Completed2 daysInternetCity 311
5/27/20261836 W BYRON STNorth Center47Completed2 daysMobile DeviceCity 311
5/12/20261734 W MELROSE STLake View32Completed2 daysMobile DeviceCity 311
11/2/20252140 N SPRINGFIELD AVELogan Square35Completed2 daysInternetCity 311
8/31/20263358 N PAULINA STLake View32Completed2 daysInternetCity 311
10/28/20253701 N PITTSBURGH AVEDunning38Completed2 daysPhone CallCity 311
6/8/20262922 S WALLACE STBridgeport11Completed2 daysPhone CallCity 311
5/2/20268042 W ADDISON STDunning38Completed2 daysMobile DeviceCity 311
3/2/20261535 N WELLSNear North Side2Completed2 daysSalesforce Mobile AppCity 311
8/12/20251212 S PLYMOUTH CTNear South Side3Completed2 daysInternetCity 311
6/20/20263679 N ELSTON AVEIrving Park33Completed2 daysMobile DeviceCity 311
12/13/20252057 W CERMAK RDLower West Side25Completed2 daysInternetCity 311
3/30/20264434 S WALLACE STNew City15Completed2 daysMobile DeviceCity 311
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