RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4480 locations in the last 30 days (4641 reports) · Last sighting 21 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/19/202510735 S RIDGEWAY AVEMount Greenwood19Completed14 daysInternetCity 311
8/14/202510737 S CENTRAL PARK AVEMount Greenwood19Completed14 daysPhone CallCity 311
8/14/202510737 S CENTRAL PARK AVEMount Greenwood19Completed14 daysPhone CallCity 311
2/22/202610737 S CENTRAL PARK AVEMount Greenwood19Completed1 dayMobile DeviceCity 311
8/17/202610737 S LOWE AVERoseland21Completed11 daysPhone CallCity 311
9/18/202510738 S HOMAN AVEMount Greenwood19Completed8 daysMobile DeviceCity 311
9/16/202510739 S MILLARD AVEMount Greenwood19Completed1 dayPhone CallCity 311
8/9/202510739 S MILLARD AVEMount Greenwood19Completed4 daysPhone CallCity 311
7/31/202510739 S MILLARD AVEMount Greenwood19Completed13 daysInternetCity 311
9/5/202510739 S ST LOUIS AVEMount Greenwood19Completed3 daysPhone CallCity 311
8/13/202610741 S ROCKWELL STMorgan Park19Completed5 daysMobile DeviceCity 311
6/5/202610742 S LAWNDALE AVEMount Greenwood19Completed5 daysPhone CallCity 311
7/26/202610742 S PROSPECT AVEMorgan Park19Completed10 daysPhone CallCity 311
6/5/202610742 S ST LOUIS AVEMount Greenwood19Completed3 daysMobile DeviceCity 311
8/15/202610742 S ST LOUIS AVEMount Greenwood19Completed11 daysMobile DeviceCity 311
9/25/202510743 S LA SALLE STRoseland9Completed12 daysPhone CallCity 311
5/26/202610744 S RIDGEWAY AVEMount Greenwood19Completed3 daysInternetCity 311
8/7/202510744 S ST LOUIS AVEMount Greenwood19Completed12 daysMobile DeviceCity 311
6/3/202610744 S VERNON AVERoseland9Completed1 dayPhone CallCity 311
6/20/202610744 S VERNON AVERoseland9Completed3 daysPhone CallCity 311
8/30/202610745 S CHURCH STMorgan Park19Completed5 daysInternetCity 311
9/25/202510745 S LA SALLE STRoseland9Completed12 daysPhone CallCity 311
11/24/202510746 S EMERALDRoseland21Completed2 daysSalesforce Mobile AppCity 311
6/24/202610746 S EMERALD AVERoseland21Completed2 daysInternetCity 311
11/17/202510746 S EMERALD AVERoseland21Completed0 daysPhone CallCity 311
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