RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4609 locations in the last 30 days (4761 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

1,102 reports match your filters.

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DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/6/20262559 W PERSHING RDBrighton Park12Open—Phone CallCity 311
10/6/20264859 S UNION AVENew City15Open—Phone CallCity 311
10/6/20262731 N MARMORA AVEBelmont Cragin30Open—InternetCity 311
10/6/20265205 S HARDING AVEWest Elsdon23Open—Phone CallCity 311
10/6/202611218 S PARNELL AVERoseland21Open—InternetCity 311
10/6/20264425 N WINCHESTER AVELincoln Square47Open—InternetCity 311
10/6/20263037 S CENTRAL PARK AVESouth Lawndale22Open—Alderman's OfficeCity 311
10/6/20267224 N OAKLEY AVEWest Ridge50Open—Phone CallCity 311
10/6/20267800 S CREGIER AVESouth Shore8Open—Phone CallCity 311
10/6/20263753 W 85TH STAshburn18Open—Phone CallCity 311
10/6/20261559 N WELLS STNear North Side2Completed3 daysPhone CallCity 311
10/6/20263640 N ARTESIAN AVENorth Center47Open—InternetCity 311
10/6/20263211 S THROOP STBridgeport11Open—InternetCity 311
10/6/20265547 W HENDERSON STPortage Park30Open—Mobile DeviceCity 311
10/6/20263112 N OCONTO AVEDunning29Open—Mobile DeviceCity 311
10/6/20263300 N LAKE SHORE DRLake View44Open—Phone CallCity 311
10/6/202668 E 100TH STRoseland9Open—Phone CallCity 311
10/6/2026931 W LAKESIDE PLUptown46Completed2 daysMobile DeviceCity 311
10/6/20265225 W MELROSE STPortage Park30Open—Phone CallCity 311
10/6/20265522 W PARKER AVEBelmont Cragin31Open—Phone CallCity 311
10/6/20261736 N KEDZIE AVEHumboldt Park26Open—Phone CallCity 311
10/6/20263325 W BERTEAU AVEIrving Park33Open—Phone CallCity 311
10/6/20262723 S SPAULDING AVESouth Lawndale22Open—InternetCity 311
10/6/20261215 E 54TH STHyde Park5Open—Phone CallCity 311
10/6/20266341 W 63RD PLClearing13Open—InternetCity 311
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