RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4545 locations in the last 30 days (4692 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

55,547 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/12/20253132 N MARMORA AVEBelmont Cragin30Completed12 daysInternetCity 311
9/12/20251517 W DIVERSEY PKWYLincoln Park32Completed13 daysMobile DeviceCity 311
9/12/20251212 N MASON AVEAustin29Completed13 daysPhone CallCity 311
9/12/20253700 N SPAULDING AVEIrving Park33Completed12 daysMobile DeviceCity 311
9/12/20253702 N SPAULDING AVEIrving Park33Completed12 daysMobile DeviceCity 311
9/12/20256146 S ROCKWELL STChicago Lawn16Completed11 daysInternetCity 311
9/12/2025921 N DAMEN AVEWest Town36Completed11 daysMobile DeviceCity 311
9/12/20253849 N SOUTHPORT AVELake View44Completed11 daysAlderman's OfficeCity 311
9/12/20255333 W SUNNYSIDE AVEPortage Park45Completed10 daysPhone CallCity 311
9/12/20252451 N ROCKWELL STLogan Square1Completed11 daysPhone CallCity 311
9/12/20251510 N ELK GROVE AVEWest Town1Completed11 daysInternetCity 311
9/12/20254330 W ADAMS STWest Garfield Park28Completed13 daysPhone CallCity 311
9/12/20254330 W ADAMS STWest Garfield Park28Completed13 daysPhone CallCity 311
9/12/20254334 W ADAMS STWest Garfield Park28Completed13 daysPhone CallCity 311
9/12/20252514 S MILLARD AVESouth Lawndale22Completed10 daysAlderman's OfficeCity 311
9/12/2025915 N LEAVITT STWest Town36Completed11 daysPhone CallCity 311
9/12/20252035 W BERTEAU AVENorth Center47Completed12 daysMobile DeviceCity 311
9/12/20251254 W 102ND PLWashington Heights21Completed10 daysPhone CallCity 311
9/12/20251951 N HALSTED STLincoln Park43Completed12 daysMobile DeviceCity 311
9/12/20251642 N TRIPP AVEHumboldt Park26Completed13 daysPhone CallCity 311
9/12/20255227 W BERTEAU AVEPortage Park38Completed13 daysMobile DeviceCity 311
9/12/20254847 W MELROSE STPortage Park31Completed10 daysInternetCity 311
9/12/2025447 W 27TH STBridgeport11Completed7 daysMobile DeviceCity 311
9/12/20253800 W DIVERSEY AVEAvondale31Completed12 daysInternetCity 311
9/12/20253915 N HAMILTON AVENorth Center47Completed12 daysMobile DeviceCity 311
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