RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4735 locations in the last 30 days (4893 reports) · Last sighting 11 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

55,880 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/17/20252350 N MERRIMAC AVEBelmont Cragin36Completed9 daysInternetCity 311
9/17/20254111 W NELSON STAvondale31Completed8 daysMobile DeviceCity 311
9/17/2025941 N FAIRFIELD AVEWest Town36Completed6 daysAlderman's OfficeCity 311
9/17/20256018 N MCLEOD AVENorwood Park39Completed7 daysAlderman's OfficeCity 311
9/17/20252741 S KOMENSKY AVESouth Lawndale22Completed5 daysPhone CallCity 311
9/17/2025400 S HAMLIN BLVDWest Garfield Park28Completed8 daysInternetCity 311
9/17/20255153 W NELSON STBelmont Cragin31Completed1 dayPhone CallCity 311
9/17/20255225 W HENDERSON STPortage Park31Completed1 dayPhone CallCity 311
9/17/20255453 N MELVINA AVEJefferson Park45Completed9 daysMobile DeviceCity 311
9/17/20256314 W DIVERSEY AVEBelmont Cragin30Completed8 daysAlderman's OfficeCity 311
9/17/20254872 N MAGNOLIA AVEUptown47Completed13 daysInternetCity 311
9/17/20255720 S MEADE AVEGarfield Ridge13Completed12 daysAlderman's OfficeCity 311
9/17/20253600 S SEELEY AVEMcKinley Park12Completed9 daysMobile DeviceCity 311
9/17/20252061 W JARVIS AVERogers Park49Completed9 daysPhone CallCity 311
9/17/20252524 W AINSLIE STLincoln Square40Completed9 daysPhone CallCity 311
9/17/20255058 W SCHOOL STPortage Park31Completed8 daysPhone CallCity 311
9/17/20259001 S STATE STChatham6Completed6 daysPhone CallCity 311
9/17/20255208 S MILLARD AVEWest Elsdon23Completed8 daysPhone CallCity 311
9/17/2025552 W OAKDALE AVELake View44Completed12 daysAlderman's OfficeCity 311
9/17/20253005 N HAMLIN AVEAvondale31Completed9 daysAlderman's OfficeCity 311
9/17/20254413 W DEMING PLHermosa31Completed9 daysInternetCity 311
9/17/20251917 N ST LOUIS AVELogan Square26Completed12 daysPhone CallCity 311
9/17/2025932 N WINCHESTER AVEWest Town36Completed12 daysInternetCity 311
9/17/20252054 W MORSE AVEWest Ridge40Completed12 daysInternetCity 311
9/17/20255522 W LAWRENCE AVEJefferson Park45Completed9 daysAlderman's OfficeCity 311
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