RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4481 locations in the last 30 days (4646 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

52,998 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/23/20266059 W ROSCOE STDunning30Open—Alderman's OfficeCity 311
9/19/20264135 N MARMORA AVEPortage Park38Open—Phone CallCity 311
9/13/20262844 W 21ST STSouth Lawndale25Open—Mobile DeviceCity 311
9/14/202610415 S COTTAGE GROVE AVEPullman9Open—InternetCity 311
9/22/20265438 S KOSTNER AVEWest Elsdon23Open—Phone CallCity 311
9/16/20264039 W MARQUETTE RDWest Lawn23Open—Phone CallCity 311
9/18/20266315 W HENDERSON STDunning30Open—Mobile DeviceCity 311
9/15/20266100 N PAULINA STEdgewater40Open—Phone CallCity 311
9/14/20263235 W OLIVE AVENorth Park39Open—Phone CallCity 311
9/24/20264204 N MEADE AVEPortage Park38Open—Phone CallCity 311
9/20/20263409 W MADISON STEast Garfield Park28Open—Phone CallCity 311
9/15/20264501 S LOWE AVENew City15Open—Phone CallCity 311
9/23/20264560 N MILWAUKEE AVEPortage Park45Open—Phone CallCity 311
9/18/20265541 W HIGGINS AVEJefferson Park45Open—Mobile DeviceCity 311
9/19/20268118 S ELLIS AVEChatham8Open—Phone CallCity 311
9/22/20265555 W KAMERLINGAustin37Open—Salesforce Mobile AppCity 311
9/22/20268115 S MORGAN STAuburn Gresham17Open—Phone CallCity 311
9/11/20265649 W GRACE STPortage Park38Open—Mobile DeviceCity 311
9/22/20261330 W CHASE AVERogers Park49Open—Phone CallCity 311
9/17/20269859 S COMMERCIAL AVESouth Deering10Open—Alderman's OfficeCity 311
9/20/20264920 W POTOMAC AVEAustin37Open—Phone CallCity 311
9/22/20261928 W OHIO STWest Town36Open—Phone CallCity 311
9/17/20265720 S MEADE AVEGarfield Ridge13Open—InternetCity 311
9/15/2026424 W 127TH STWest Pullman9Open—Phone CallCity 311
9/10/20264722 N TALMAN AVELincoln Square40Open—Mobile DeviceCity 311
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