RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4458 locations in the last 30 days (4630 reports) · Last sighting 24 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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/18/20257747 S CORNELL AVESouth Shore8Completed11 daysInternetCity 311
12/9/20257337 S SOUTH SHORE DRSouth Shore7Completed1 dayPhone CallCity 311
8/20/20252608 E 74TH PLSouth Shore7Completed7 daysPhone CallCity 311
8/27/20257434 S CHAPPEL AVESouth Shore7Completed14 daysPhone CallCity 311
8/26/20257424 S DORCHESTER AVESouth Shore8Completed7 daysInternetCity 311
9/10/20267001 S MERRILL AVESouth Shore5Completed12 daysInternetCity 311
9/10/20267834 S JEFFERY BLVDSouth Shore8Completed8 daysPhone CallCity 311
9/8/20266812 S EAST END AVESouth Shore5Completed14 daysPhone CallCity 311
7/10/20262373 E 70TH STSouth Shore5Completed7 daysInternetCity 311
12/10/20251520 E 67TH PLSouth Shore5Completed1 dayMobile DeviceCity 311
12/12/20257741 S CHAPPEL AVESouth Shore8Completed3 daysInternetCity 311
9/2/20251518 E 72ND STSouth Shore8Completed9 daysPhone CallCity 311
9/10/20266917 S PAXTON AVESouth Shore5Completed12 daysInternetCity 311
9/11/20261533 E 67TH STSouth Shore5Completed11 daysInternetCity 311
8/26/20257421 S DANTE AVESouth Shore8Completed7 daysInternetCity 311
8/26/20257523 S YATES BLVDSouth Shore7Completed7 daysInternetCity 311
10/26/20267731 S ESSEX AVESouth Shore7Open—Alderman's OfficeCity 311
7/7/20262402 E 77TH STSouth Shore7Completed1 dayPhone CallCity 311
10/24/20267622 S RIDGELAND AVESouth Shore8Open—Mobile DeviceCity 311
7/10/20261633 E 67TH STSouth Shore5Completed7 daysPhone CallCity 311
10/8/20251950 E 71ST STSouth Shore5Completed2 daysPhone CallCity 311
12/31/20257523 S YATES BLVDSouth Shore7Completed2 daysInternetCity 311
12/19/20257341 S DANTE AVESouth Shore8Completed3 daysPhone CallCity 311
8/20/20257638 S EUCLID AVESouth Shore8Completed7 daysInternetCity 311
9/18/20257841 S KINGSTON AVESouth Shore7Completed11 daysInternetCity 311
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