RatCity — Chicago Rat and Rodent Sightings Map

RatCity

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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

58,530 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/30/20264136 W 57TH PLWest Elsdon13Open—InternetCity 311
10/30/20265527 S MASON AVEGarfield Ridge13Open—InternetCity 311
10/30/20265754 S CENTRAL AVEGarfield Ridge13Open—InternetCity 311
10/30/20266226 S NASHVILLE AVEClearing13Open—InternetCity 311
10/30/20263136 N CLIFTON AVELake View44Open—InternetCity 311
10/30/20262934 W 25TH PLSouth Lawndale24Open—Phone CallCity 311
10/30/20262344 S ST LOUIS AVESouth Lawndale22Open—Alderman's OfficeCity 311
10/30/20262421 S SAWYER AVESouth Lawndale25Open—Phone CallCity 311
10/30/20265846 S CALUMET AVEWashington Park20Open—Phone CallCity 311
10/30/2026455 W 45TH STNew City15Open—Alderman's OfficeCity 311
10/30/2026455 W 45TH STNew City15Open—Phone CallCity 311
10/30/20265837 N SPAULDING AVENorth Park39Open—Alderman's OfficeCity 311
10/30/20265259 W WASHINGTON BLVDAustin37Open—Phone CallCity 311
10/30/20262921 N NEVA AVEMontclare29Open—Phone CallCity 311
10/30/20261924 N HALSTED STLincoln Park43Open—InternetCity 311
10/30/20265013 W IRVING PARK RDPortage Park45Open—InternetCity 311
10/30/20264119 N MONITOR AVEPortage Park38Open—Phone CallCity 311
10/30/202612308 S EMERALD AVEWest Pullman9Open—InternetCity 311
10/30/20263745 W 65TH PLWest Lawn23Open—Phone CallCity 311
10/30/20262829 N NEVAMontclare29Open—Salesforce Mobile AppCity 311
10/30/20266334 S CLAREMONT AVEChicago Lawn16Open—Phone CallCity 311
10/30/20263714 W GRENSHAW STNorth Lawndale24Open—Mobile DeviceCity 311
10/30/20262202 N MAJOR AVEBelmont Cragin36Open—Mobile DeviceCity 311
10/30/20266820 N MENDOTA AVEForest Glen45Open—Phone CallCity 311
10/30/20266818 N MENDOTA AVEForest Glen45Open—Phone CallCity 311
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