RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4369 locations in the last 30 days (4525 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

56,145 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/30/20261469 W RASCHER AVEEdgewater48Completed7 daysMobile DeviceCity 311
7/30/20262910 W HARRISON STEast Garfield Park27Completed6 daysInternetCity 311
7/30/20267230 S YATES AVESouth Shore7Completed11 daysMobile DeviceCity 311
7/30/20264570 S LAKE PARK AVEKenwood4Completed6 daysPhone CallCity 311
7/30/20264606 S LAKE PARK AVEKenwood4Completed0 daysPhone CallCity 311
7/30/20263823 N FREMONT STLake View46Completed5 daysMobile DeviceCity 311
7/30/20264768 N KEYSTONE AVEAlbany Park39Completed11 daysInternetCity 311
7/29/20264717 W LAWRENCE AVEIrving Park39Completed12 daysMobile DeviceCity 311
7/29/20263132 W DIVERSEY AVEAvondale35Completed12 daysMobile DeviceCity 311
7/29/20269101 S PHILLIPS AVECalumet Heights7Completed11 daysPhone CallCity 311
7/29/20264926 S HONORE STNew City15Completed13 daysPhone CallCity 311
7/29/20265040 N LEAVITT STLincoln Square40Completed13 daysInternetCity 311
7/29/20262446 W CORTEZ STWest Town36Completed15 daysPhone CallCity 311
7/29/20265430 S CORNELL AVEHyde Park5Completed7 daysMobile DeviceCity 311
7/29/20265340 W MELROSE STPortage Park31Completed13 daysPhone CallCity 311
7/29/20262053 W 23RD STLower West Side25Completed8 daysInternetCity 311
7/29/20265417 N LUDLAM AVEJefferson Park45Completed12 daysMobile DeviceCity 311
7/29/202610825 S PARNELL AVERoseland21Completed6 daysMobile DeviceCity 311
7/29/2026604 N ST LOUIS AVEHumboldt Park27Completed7 daysMobile DeviceCity 311
7/29/20261328 N HARDING AVEHumboldt Park36Completed15 daysMobile DeviceCity 311
7/29/20262615 S TROY STSouth Lawndale25Completed8 daysMobile DeviceCity 311
7/29/20266947 W ARCHER AVEGarfield Ridge13Completed13 daysMobile DeviceCity 311
7/29/20265544 S NEWLAND AVEGarfield Ridge13Completed13 daysMobile DeviceCity 311
7/29/20265417 S MELVINA AVEGarfield Ridge23Completed9 daysInternetCity 311
7/29/20266605 S KENNETH AVEWest Lawn13Completed13 daysInternetCity 311
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