RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4477 locations in the last 30 days (4642 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.

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

52,998 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/2/20253330 N AVERS AVEAvondale30Completed12 daysMobile DeviceCity 311
8/2/2025850 E 88TH PLChatham8Completed10 daysMobile DeviceCity 311
8/2/20255739 N MCVICKER AVENorwood Park45Completed4 daysInternetCity 311
8/2/20251423 W FARGO AVERogers Park49Completed10 daysInternetCity 311
8/2/20255709 W GOODMAN STJefferson Park45Completed4 daysInternetCity 311
8/2/20254541 N MALDEN STUptown46Completed12 daysMobile DeviceCity 311
8/2/20253723 W 114TH PLMount Greenwood19Completed12 daysInternetCity 311
8/2/20254556 N MAGNOLIA AVEUptown46Completed12 daysMobile DeviceCity 311
8/2/20254529 N MALDEN STUptown46Completed12 daysMobile DeviceCity 311
8/2/20255816 S KILDARE AVEWest Elsdon13Completed10 daysInternetCity 311
8/2/20256849 W BELMONT AVEMontclare36Completed12 daysInternetCity 311
8/2/20251015 W 59TH STEnglewood16Completed9 daysMobile DeviceCity 311
8/2/20257800 W SUMMERDALE AVENorwood Park41Completed16 daysMobile DeviceCity 311
8/2/20254417 N SAWYER AVEAlbany Park33Completed11 daysInternetCity 311
8/2/20253451 N BELL AVENorth Center32Completed12 daysInternetCity 311
8/2/20252845 W 40TH PLBrighton Park12Completed10 daysInternetCity 311
8/2/20252620 W POTOMAC AVEWest Town26Completed6 daysMobile DeviceCity 311
8/2/202510344 S CALUMET AVERoseland9Completed4 daysPhone CallCity 311
8/2/20252120 W ROSCOE STNorth Center32Completed16 daysInternetCity 311
8/2/20254121 N SPRINGFIELD AVEIrving Park39Completed9 daysMobile DeviceCity 311
8/2/20252737 S SHIELDS AVEArmour Square11Completed3 daysInternetCity 311
8/2/20255833 W AINSLIE STJefferson Park45Completed4 daysMobile DeviceCity 311
8/2/20252731 S SHIELDS AVEArmour Square11Completed3 daysInternetCity 311
8/2/20252929 W BALMORAL AVELincoln Square39Completed11 daysPhone CallCity 311
8/2/20251837 N KARLOV AVEHermosa26Completed6 daysMobile DeviceCity 311
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