RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4331 locations in the last 30 days (4490 reports) · Last sighting 2 days 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.

32080fewer → more

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

52,482 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/10/20269642 S HARVARD AVERoseland9Open—Alderman's OfficeCity 311
3/15/20269642 S EUCLID AVESouth Deering7Completed3 daysInternetCity 311
10/27/20259642 S EUCLID AVESouth Deering7Completed7 daysInternetCity 311
9/3/20259641 S MUSKEGON AVESouth Deering10Completed13 daysInternetCity 311
5/16/20269641 S CARPENTER STWashington Heights21Completed4 daysPhone CallCity 311
9/14/20269640 S PRAIRIE AVERoseland9Open—Phone CallCity 311
8/26/2025963 W 36TH STBridgeport11Completed13 daysInternetCity 311
10/28/20259639 S PRINCETON AVERoseland9Completed6 daysPhone CallCity 311
9/22/20259637 S LA SALLE STRoseland9Completed4 daysPhone CallCity 311
3/26/20269636 S INDIANA AVERoseland9Completed1 dayPhone CallCity 311
8/20/20259635 S SANGAMON STWashington Heights21Completed9 daysPhone CallCity 311
5/4/20269635 S LOWE AVEWashington Heights9Completed3 daysInternetCity 311
6/24/20269635 S LA SALLE STRoseland9Completed6 daysPhone CallCity 311
8/21/20269635 S LA SALLE STRoseland9Completed5 daysPhone CallCity 311
1/14/20269635 S LA SALLE STRoseland9Completed0 daysPhone CallCity 311
9/9/20269635 S LA SALLE STRoseland9Completed12 daysPhone CallCity 311
4/1/20269635 S LA SALLE STRoseland9Completed1 dayPhone CallCity 311
11/9/20259635 S LA SALLE STRoseland9Completed1 dayPhone CallCity 311
5/25/20269633 S LEast Side10Completed7 daysInternetCity 311
8/13/20269631 S YATES AVESouth Deering7Completed14 daysPhone CallCity 311
10/8/20259631 S WENTWORTH AVERoseland9Completed7 daysPhone CallCity 311
5/26/20269631 S CARPENTER STWashington Heights21Completed3 daysMobile DeviceCity 311
1/2/20269631 S CARPENTER STWashington Heights21Completed3 daysMobile DeviceCity 311
2/25/20269631 S CARPENTER STWashington Heights21Completed1 dayMobile DeviceCity 311
9/10/20259631 S CARPENTER STWashington Heights21Completed12 daysMobile DeviceCity 311
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