RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4547 locations in the last 30 days (4694 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

55,474 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/31/20255341 W WINNEMAC AVEJefferson Park45Completed11 daysMobile DeviceCity 311
9/5/20253810 N HERMITAGE AVELake View47Completed11 daysMobile DeviceCity 311
7/9/20263200 N MONTICELLO AVEAvondale30Completed11 daysAlderman's OfficeCity 311
9/18/20266823 S KOSTNER AVEWest Lawn23Completed11 daysPhone CallCity 311
8/1/20251934 W EDDY STNorth Center47Completed11 daysInternetCity 311
8/8/20252143 W JACKSON BLVDNear West Side27Completed11 daysPhone CallCity 311
9/4/20253920 W 66TH PLWest Lawn23Completed11 daysPhone CallCity 311
8/3/20261615 W WILSON AVEUptown47Completed11 daysInternetCity 311
7/9/20263700 W CORNELIA AVEAvondale30Completed11 daysAlderman's OfficeCity 311
8/28/20255850 N MULLIGAN AVENorwood Park45Completed11 daysAlderman's OfficeCity 311
8/8/20256900 W 65TH STClearing—Completed11 daysInternetCity 311
8/3/202610534 S LOWE AVERoseland21Completed11 daysPhone CallCity 311
9/18/20251243 N CLEAVER STWest Town1Completed11 daysMobile DeviceCity 311
9/14/20263235 W OLIVE AVENorth Park39Completed11 daysPhone CallCity 311
9/26/20265623 W MADISON STAustin29Completed11 daysInternetCity 311
9/24/20267830 S CARPENTER STAuburn Gresham17Completed11 daysInternetCity 311
8/8/20251471 W ERIE STWest Town1Completed11 daysMobile DeviceCity 311
9/24/20262324 N AVERS AVELogan Square35Completed11 daysMobile DeviceCity 311
7/28/20257345 S ABERDEEN STEnglewood17Completed11 daysPhone CallCity 311
8/4/20253668 N ELSTON AVEIrving Park35Completed11 daysMobile DeviceCity 311
7/23/20261253 N SPRINGFIELD AVEHumboldt Park36Completed11 daysPhone CallCity 311
8/11/20254228 W WALTON STHumboldt Park37Completed11 daysAlderman's OfficeCity 311
8/3/20255139 S MELVINA AVEGarfield Ridge23Completed11 daysPhone CallCity 311
7/25/20261037 W 31ST PLBridgeport11Completed11 daysPhone CallCity 311
8/23/20259869 S PROSPECT AVEBeverly19Completed11 daysMobile DeviceCity 311
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