RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4540 locations in the last 30 days (4687 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

55,474 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/29/20266550 W 64TH STClearing13Completed2 daysPhone CallCity 311
9/22/20256729 W 63RD STClearing13Completed9 daysInternetCity 311
8/20/20256647 S KOMENSKY AVEWest Lawn13Completed8 daysInternetCity 311
8/12/20255751 W 64TH STClearing13Completed13 daysInternetCity 311
10/1/20255839 S NORDICA AVEGarfield Ridge13Completed9 daysAlderman's OfficeCity 311
10/3/20255600 S NEWCASTLE AVEGarfield Ridge13Completed7 daysAlderman's OfficeCity 311
4/29/20266059 S MERRIMACClearing13Completed2 daysSalesforce Mobile AppCity 311
9/23/20256742 W 64TH PLClearing13Completed8 daysMobile DeviceCity 311
10/7/20255738 S NATCHEZ AVEGarfield Ridge13Completed3 daysAlderman's OfficeCity 311
8/18/20255551 S NATCHEZ AVEGarfield Ridge13Completed11 daysInternetCity 311
4/29/20265224 W 63RD PLClearing13Completed2 daysAlderman's OfficeCity 311
9/22/20256628 W 64TH PLClearing13Completed9 daysInternetCity 311
7/9/20266449 S KNOX AVEClearing13Completed5 daysMobile DeviceCity 311
10/7/20255613 S NAGLE AVEGarfield Ridge13Completed3 daysAlderman's OfficeCity 311
10/1/20256035 W 59TH STClearing13Completed9 daysAlderman's OfficeCity 311
9/22/20256542 W 64TH PLClearing13Completed9 daysInternetCity 311
4/30/20264141 W 56TH PLWest Elsdon13Completed0 daysMobile DeviceCity 311
8/21/20255612 S NARRAGANSETT AVEGarfield Ridge13Completed8 daysInternetCity 311
10/3/20256441 S LAPORTE AVEClearing13Completed12 daysAlderman's OfficeCity 311
4/29/20265859 S NEWLAND AVEGarfield Ridge13Completed1 dayMobile DeviceCity 311
10/4/20255732 S MCVICKER AVEGarfield Ridge13Completed11 daysInternetCity 311
10/6/20256055 S PARKSIDE AVEClearing13Completed9 daysAlderman's OfficeCity 311
9/25/20255735 S NEWLAND AVEGarfield Ridge13Completed12 daysMobile DeviceCity 311
8/18/20255540 S NAGLE AVEGarfield Ridge13Completed11 daysInternetCity 311
4/29/20265644 W 64TH STClearing13Completed1 dayInternetCity 311
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