RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4575 locations in the last 30 days (4743 reports) · Last sighting 13 hours 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

52,998 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/22/20263045 W JARLATH STWest Ridge50Open—Alderman's OfficeCity 311
9/17/20265932 N OZANAM AVENorwood Park41Open—InternetCity 311
9/23/20261138 W COLUMBIA AVERogers Park49Open—Mobile DeviceCity 311
9/22/20263013 S WELLS STArmour Square11Open—Alderman's OfficeCity 311
9/17/20269859 S COMMERCIAL AVESouth Deering10Open—Alderman's OfficeCity 311
9/17/20265515 N NASHVILLE AVENorwood Park41Open—Phone CallCity 311
9/13/20262142 W CERMAK RDLower West Side25Open—Phone CallCity 311
9/19/20262446 N JANSSEN AVELincoln Park32Open—InternetCity 311
9/17/20262859 W MCLEAN AVELogan Square1Open—Phone CallCity 311
9/12/20262616 W EVERGREEN AVEWest Town26Open—Mobile DeviceCity 311
9/21/20263276 W FULLERTON AVELogan Square35Open—Alderman's OfficeCity 311
9/22/20265437 S LOTUS AVEGarfield Ridge23Open—Phone CallCity 311
9/23/2026928 N HARDING AVEHumboldt Park37Open—Phone CallCity 311
9/19/20261724 W ROSCOE STLake View47Open—InternetCity 311
9/18/20261716 N PULASKI RDHumboldt Park26Open—Mobile DeviceCity 311
9/20/20261958 N BURLING STLincoln Park43Open—Mobile DeviceCity 311
9/21/20265754 S DORCHESTER AVEHyde Park5Open—InternetCity 311
9/13/20264534 N MEADE AVEPortage Park38Open—Phone CallCity 311
9/18/20263740 N MARSHFIELD AVELake View47Open—InternetCity 311
9/23/20263249 N KEDZIE AVEAvondale33Open—InternetCity 311
9/24/20266701 W 64TH PLClearing13Open—InternetCity 311
9/18/20263681 N ELSTON AVEIrving Park33Open—Mobile DeviceCity 311
9/24/20265657 N MERRIMAC AVENorwood Park45Open—Phone CallCity 311
9/14/20266029 S LOOMIS BLVDWest Englewood16Open—InternetCity 311
9/24/20261942 N MONTICELLO AVELogan Square26Open—InternetCity 311
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