RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4744 locations in the last 30 days (4901 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.

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

55,179 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/20/20264113 W PALMER STHermosa35Completed1 dayAlderman's OfficeCity 311
1/22/2026952 W 37TH STBridgeport11Completed1 dayMobile DeviceCity 311
12/11/20251010 N MONTICELLOHumboldt Park27Completed1 daySalesforce Mobile AppCity 311
3/25/20263638 W 61ST STWest Lawn23Completed1 dayAlderman's OfficeCity 311
11/12/20254300 N MAJOR AVEPortage Park38Completed1 dayPhone CallCity 311
3/19/20262918 W MARQUETTE RDChicago Lawn15Completed1 dayPhone CallCity 311
9/22/20252241 W 71ST STChicago Lawn18Completed1 dayPhone CallCity 311
9/25/20251308 N RIDGEWAY AVEHumboldt Park36Completed1 dayPhone CallCity 311
3/11/20264345 N MOZART STIrving Park33Completed1 dayMobile DeviceCity 311
2/25/20262626 S PRINCETON AVEArmour Square11Completed1 dayInternetCity 311
3/31/202612227 S RACINE AVEWest Pullman21Completed1 dayPhone CallCity 311
3/25/20265271N N NORTHWEST HWYJefferson Park45Completed1 dayPhone CallCity 311
2/26/20262545 N SOUTHPORT AVELincoln Park32Completed1 dayMobile DeviceCity 311
3/23/20266447 N BOSWORTH AVERogers Park49Completed1 dayAlderman's OfficeCity 311
5/21/20264724 S VINCENNES AVEGrand Boulevard3Completed1 dayMobile DeviceCity 311
4/21/20263924 N JANSSEN AVELake View46Completed1 dayPhone CallCity 311
4/6/20263835 N KILPATRICK AVEPortage Park45Completed1 dayPhone CallCity 311
3/10/20265008 W WABANSIA AVEAustin37Completed1 dayPhone CallCity 311
2/25/20262700 S PRINCETON AVEArmour Square11Completed1 dayInternetCity 311
1/12/20265600 S NEVA AVEGarfield Ridge13Completed1 dayPhone CallCity 311
11/16/20253735 W EASTWOOD AVEAlbany Park33Completed1 dayPhone CallCity 311
8/31/20266656 W GRAND AVEMontclare36Completed1 dayPhone CallCity 311
1/6/20265722 N KIMBALL AVENorth Park39Completed1 dayPhone CallCity 311
3/9/20264632 N KELSO AVEAlbany Park39Completed1 dayInternetCity 311
11/17/20257904 S MICHIGAN AVEChatham6Completed1 dayPhone CallCity 311
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