RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4530 locations in the last 30 days (4685 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

54,257 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/17/20253309 N AVERS AVEAvondale30Completed9 daysMobile DeviceCity 311
8/17/20251813 N ORCHARD STLincoln Park43Completed15 daysMobile DeviceCity 311
8/17/20251940 N MOHAWK STLincoln Park43Completed15 daysMobile DeviceCity 311
8/17/20255146 W GRAND AVEBelmont Cragin36Completed8 daysMobile DeviceCity 311
8/17/20255838 S KENTON AVEWest Elsdon13Completed10 daysMobile DeviceCity 311
8/17/20252254 N SPRINGFIELD AVELogan Square35Completed12 daysMobile DeviceCity 311
8/17/2025939 W 33RD PLBridgeport11Completed9 daysInternetCity 311
8/17/20253327 N HARDING AVEAvondale30Completed9 daysInternetCity 311
8/17/2025937 W 33RD PLBridgeport11Completed8 daysInternetCity 311
8/17/20252743 W RASCHER AVELincoln Square40Completed10 daysMobile DeviceCity 311
8/17/20252606 W BALMORAL AVELincoln Square40Completed10 daysMobile DeviceCity 311
8/17/20256519 S FAIRFIELD AVEChicago Lawn16Completed8 daysInternetCity 311
8/17/20252658 W RASCHER AVELincoln Square40Completed10 daysMobile DeviceCity 311
8/17/20253914 W WELLINGTON AVEAvondale31Completed12 daysMobile DeviceCity 311
8/17/20252652 W BALMORAL AVELincoln Square40Completed10 daysMobile DeviceCity 311
8/17/20251422 W CULLERTON STLower West Side25Completed9 daysInternetCity 311
8/17/20253261 W FULTON STEast Garfield Park28Completed9 daysInternetCity 311
8/18/20256127 W GRACE STDunning38Completed4 daysMobile DeviceCity 311
8/18/20255109 W PENSACOLA AVEPortage Park45Completed15 daysInternetCity 311
8/18/20255107 W PENSACOLA AVEPortage Park45Completed15 daysInternetCity 311
8/18/20253309 W BRYN MAWR AVENorth Park39Completed10 daysMobile DeviceCity 311
8/18/20256001 S WHIPPLE STChicago Lawn15Completed0 daysInternetCity 311
8/18/20255551 S NATCHEZ AVEGarfield Ridge13Completed11 daysInternetCity 311
8/18/20254117 N MCVICKER AVEPortage Park38Completed9 daysMobile DeviceCity 311
8/18/20255239 W PATTERSON AVEPortage Park30Completed1 dayPhone CallCity 311
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