RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4479 locations in the last 30 days (4643 reports) · Last sighting 16 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.

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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

57,251 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/18/20251419 W FLOURNOY STNear West Side34Completed2 daysPhone CallCity 311
10/18/20254933 N TRIPP AVEAlbany Park39Completed6 daysPhone CallCity 311
10/18/20251442 N ELK GROVE AVEWest Town1Completed6 daysInternetCity 311
10/18/20254903 N NORDICA AVENorwood Park41Completed5 daysPhone CallCity 311
10/18/20251627 S LOOMIS STLower West Side25Completed6 daysPhone CallCity 311
10/18/20252945 N TALMAN AVEAvondale35Completed9 daysInternetCity 311
10/18/20255522 N LONG AVEJefferson Park45Completed6 daysPhone CallCity 311
10/18/20251529 W CHESTNUT STWest Town1Completed4 daysMobile DeviceCity 311
10/18/20252349 W GRENSHAW STNear West Side28Completed5 daysMobile DeviceCity 311
10/18/20251910 W CERMAK RDLower West Side25Completed6 daysInternetCity 311
10/18/20258924 S DORCHESTER AVECalumet Heights8Completed3 daysPhone CallCity 311
10/18/20254311 S FORRESTVILLE AVEGrand Boulevard4Completed5 daysInternetCity 311
10/18/2025920 N HERMITAGE AVEWest Town1Completed6 daysPhone CallCity 311
10/18/20253652 N DAMEN AVENorth Center47Completed6 daysMobile DeviceCity 311
10/18/20252328 W AUGUSTA BLVDWest Town36Completed6 daysMobile DeviceCity 311
10/18/20257333 W BARRY AVEDunning29Completed4 daysInternetCity 311
10/18/20253839 W 109TH PLMount Greenwood19Completed5 daysInternetCity 311
10/18/20252155 N MULLIGAN AVEBelmont Cragin36Completed6 daysInternetCity 311
10/18/20253528 W 85TH PLAshburn18Completed6 daysPhone CallCity 311
10/18/20255501 N MAJOR AVEJefferson Park45Completed6 daysPhone CallCity 311
10/18/20254629 S HARDING AVEArcher Heights14Completed9 daysPhone CallCity 311
10/18/20254620 S HARDING AVEArcher Heights14Completed9 daysAlderman's OfficeCity 311
10/18/20251426 W CULLERTON STLower West Side25Completed6 daysMobile DeviceCity 311
10/18/20251920 S LAFLIN STLower West Side25Completed6 daysMobile DeviceCity 311
10/18/20252942 N WHIPPLE STAvondale35Completed4 daysInternetCity 311
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