RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4322 locations in the last 30 days (4478 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.

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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

56,145 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
6/1/20262949 S ARCH STBridgeport11Completed2 daysAlderman's OfficeCity 311
2/24/20265536 W WINDSOR AVEPortage Park45Completed2 daysInternetCity 311
3/2/20261727 N FREMONT STLincoln Park43Completed2 daysPhone CallCity 311
4/29/20262728 N RACINE AVELincoln Park32Completed2 daysInternetCity 311
1/26/20263652 W MCLEAN AVELogan Square26Completed2 daysInternetCity 311
5/18/20261159 W 107TH STMorgan Park21Completed2 daysInternetCity 311
2/17/20266479 S NORMANDY AVEClearing13Completed2 daysInternetCity 311
6/27/20262142 W 18TH STLower West Side25Completed2 daysInternetCity 311
12/27/20252712 N ST LOUIS AVELogan Square35Completed2 daysMobile DeviceCity 311
6/21/20261628 S DEARBORN STNear South Side3Completed2 daysInternetCity 311
9/29/20252538 N MARMORA AVEBelmont Cragin30Completed2 daysInternetCity 311
10/29/20253416 S WESTERN AVEMcKinley Park12Completed2 daysMobile DeviceCity 311
1/10/20265137 S LAWNDALE AVEWest Elsdon23Completed2 daysInternetCity 311
2/17/20266467 S NORMANDY AVEClearing13Completed2 daysInternetCity 311
10/27/20253441 W POTOMAC AVEHumboldt Park26Completed2 daysInternetCity 311
8/12/202526 W CHESTNUT STNear North Side42Completed2 daysInternetCity 311
4/11/20267041 W FARRAGUT AVENorwood Park41Completed2 daysMobile DeviceCity 311
6/22/20261234 N HALSTED STNear North Side27Completed2 daysPhone CallCity 311
4/11/20265400 W ADDISON STPortage Park30Completed2 daysMobile DeviceCity 311
11/4/20253615 W BYRON STIrving Park30Completed2 daysInternetCity 311
4/28/20261610 W FARGO AVERogers Park49Completed2 daysMobile DeviceCity 311
6/15/20263851 N LAKEWOOD AVELake View44Completed2 daysPhone CallCity 311
3/30/20263310 N OSAGE AVEDunning38Completed2 daysInternetCity 311
2/17/20266477 S NORMANDY AVEClearing13Completed2 daysInternetCity 311
6/21/20262734 W JARLATH STWest Ridge50Completed2 daysInternetCity 311
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