RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4335 locations in the last 30 days (4494 reports) · Last sighting 2 days 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

1,215 reports match your filters.

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DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/19/20261610 N SAWYER AVEHumboldt Park26Open—InternetCity 311
9/19/20264414 N DRAKE AVEAlbany Park33Open—Mobile DeviceCity 311
9/18/20263079 S BONFIELD STBridgeport11Open—Phone CallCity 311
9/18/20264146 W WELLINGTON AVEAvondale31Open—Mobile DeviceCity 311
9/18/20265201 S MERRIMAC AVEGarfield Ridge23Open—InternetCity 311
9/18/20266315 W HENDERSON STDunning30Open—Mobile DeviceCity 311
9/18/20265846 S NEWCASTLE AVEGarfield Ridge13Open—InternetCity 311
9/18/20262702 N ASHLAND AVELincoln Park32Open—InternetCity 311
9/18/20263626 N ASHLAND AVELake View47Open—Phone CallCity 311
9/18/20265216 W 63RD PLClearing13Open—Mobile DeviceCity 311
9/18/20261217 N AVERS AVEHumboldt Park36Open—Mobile DeviceCity 311
9/18/2026446 N HAMLIN AVEHumboldt Park37Open—Phone CallCity 311
9/18/20263728 N MARSHFIELD AVELake View47Open—InternetCity 311
9/18/20263730 N MARSHFIELD AVELake View47Open—InternetCity 311
9/18/20263740 N MARSHFIELD AVELake View47Open—InternetCity 311
9/18/20265200 S UNIVERSITY AVEHyde Park5Open—Phone CallCity 311
9/18/20263721 N KOSTNER AVEIrving Park30Open—Phone CallCity 311
9/18/20265024 N ALBANY AVEAlbany Park33Open—InternetCity 311
9/18/20265010 N ALBANY AVEAlbany Park33Open—InternetCity 311
9/18/20261625 E HYDE PARK BLVDHyde Park5Open—Phone CallCity 311
9/18/20263149 S PRINCETON AVEArmour Square11Open—InternetCity 311
9/18/20262605 N PARKSIDE AVEBelmont Cragin30Open—InternetCity 311
9/18/20264445 S MARSHFIELD AVENew City15Open—InternetCity 311
9/18/20261430 W ELMDALE AVEEdgewater48Open—Mobile DeviceCity 311
9/18/20265525 S MOODY AVEGarfield Ridge13Open—InternetCity 311
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