RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4442 locations in the last 30 days (4620 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

58,010 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/3/20255043 W WARWICK AVEPortage Park30Completed2 daysInternetCity 311
11/3/20253227 N NEVA AVEDunning29Completed3 daysMobile DeviceCity 311
11/3/20253404 N SEMINARY AVELake View44Completed2 daysInternetCity 311
11/4/202510244 S CALUMET AVERoseland9Completed2 daysInternetCity 311
11/4/20253537 W 83RD PLAshburn18Completed3 daysInternetCity 311
11/4/20256734 N ROCKWELL STWest Ridge50Completed3 daysMobile DeviceCity 311
11/4/20255330 W ARGYLE AVEJefferson Park45Completed1 dayMobile DeviceCity 311
11/4/20252814 N MONITOR AVEBelmont Cragin30Completed1 dayMobile DeviceCity 311
11/4/20252849 N CLARK STLake View44Completed1 dayPhone CallCity 311
11/4/20252235 S SACRAMENTO AVESouth Lawndale24Completed1 dayInternetCity 311
11/4/20258852 S WABASH AVEChatham6Completed1 dayMobile DeviceCity 311
11/4/20253226 S KEDVALE AVESouth Lawndale22Completed1 dayPhone CallCity 311
11/4/20253224 S KEDVALE AVESouth Lawndale22Completed1 dayPhone CallCity 311
11/4/20254108 W CERMAK RDNorth Lawndale24Completed1 dayPhone CallCity 311
11/4/20254441 N DOVER STUptown46Completed1 dayInternetCity 311
11/4/20252114 W CULLERTON STLower West Side25Completed1 dayPhone CallCity 311
11/4/20251839 S MAY STLower West Side25Completed1 dayPhone CallCity 311
11/4/20253531 N KOSTNER AVEIrving Park30Completed2 daysPhone CallCity 311
11/4/20252911 N MASON AVEBelmont Cragin30Completed1 dayPhone CallCity 311
11/4/20255408 N ARTESIAN AVELincoln Square40Completed1 dayPhone CallCity 311
11/4/20254824 N CALIFORNIA AVELincoln Square40Completed1 dayPhone CallCity 311
11/4/20253638 N OAKLEY AVENorth Center47Completed1 dayPhone CallCity 311
11/4/20254524 N PAULINA STUptown47Completed1 dayPhone CallCity 311
11/4/202511401 S LAFLIN STMorgan Park21Completed3 daysPhone CallCity 311
11/4/20251714 W FARWELL AVERogers Park49Completed2 daysPhone CallCity 311
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