RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4487 locations in the last 30 days (4654 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

52,821 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/16/20261702 N TROY STHumboldt Park26Open—Mobile DeviceCity 311
9/16/20267548 S EMERALD AVEEnglewood17Open—Phone CallCity 311
9/17/20261655 N CAMPBELL AVEWest Town1Open—InternetCity 311
9/17/20261141 W PATTERSON AVELake View44Open—InternetCity 311
9/15/20266640 N CALIFORNIA AVEWest Ridge50Open—InternetCity 311
9/16/20266038 W BERENICE AVEDunning38Open—Phone CallCity 311
9/18/20262446 W WALTON STWest Town36Open—Phone CallCity 311
9/17/20262735 W CATALPA AVELincoln Square40Open—Mobile DeviceCity 311
9/16/2026157 W DIVISION STNear North Side27Open—InternetCity 311
9/16/20267501 W FOREST PRESERVE AVEDunning38Open—Phone CallCity 311
9/16/20264105 W HARRISON STWest Garfield Park24Open—InternetCity 311
9/13/20263609 W WOLFRAM STAvondale35Open—Mobile DeviceCity 311
9/15/20266300 S PAULINA STWest Englewood15Open—Phone CallCity 311
9/15/20266608 S PULASKI RDWest Lawn13Open—Mobile DeviceCity 311
9/15/20262001 N ORCHARD STLincoln Park43Open—InternetCity 311
9/15/20265800 S WOLCOTT AVEWest Englewood15Open—Phone CallCity 311
9/15/20262058 N PULASKI RDHermosa26Open—Phone CallCity 311
9/16/20266532 N NORDICA AVENorwood Park41Open—Alderman's OfficeCity 311
9/15/20262753 S KEDVALE AVESouth Lawndale22Open—Phone CallCity 311
9/15/20265338 S MAPLEWOOD AVEGage Park14Open—InternetCity 311
9/16/20263458 S LAWNDALE AVESouth Lawndale22Open—Mobile DeviceCity 311
9/15/20264401 S HALSTED STNew City15Open—Phone CallCity 311
9/15/20264341 N WHIPPLE STIrving Park33Open—Mobile DeviceCity 311
9/15/20266300 S WOOD STWest Englewood15Open—Phone CallCity 311
9/21/20261143 N SPRINGFIELD AVEHumboldt Park37Open—Phone CallCity 311
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