RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4547 locations in the last 30 days (4702 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

53,915 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/27/20255646 S FAIRFIELD AVEGage Park15Completed13 daysInternetCity 311
8/26/20254446 N KENTON AVEIrving Park39Completed13 daysAlderman's OfficeCity 311
7/10/20261535 N LOTUS AVEAustin37Completed13 daysPhone CallCity 311
9/18/20255516 S NASHVILLE AVEGarfield Ridge13Completed13 daysInternetCity 311
7/31/20255000 W WARWICK AVEPortage Park30Completed13 daysAlderman's OfficeCity 311
9/4/20253945 N SPRINGFIELD AVEIrving Park45Completed13 daysInternetCity 311
8/27/20265355 S MELVINA AVEGarfield Ridge23Completed13 daysMobile DeviceCity 311
9/10/20251754 N HUMBOLDT BLVDHumboldt Park26Completed13 daysPhone CallCity 311
9/9/20266450 S NEW ENGLAND AVEClearing13Completed13 daysInternetCity 311
7/31/20264601 S WALLACE STNew City15Completed13 daysAlderman's OfficeCity 311
8/27/20259247 S PRAIRIE AVERoseland6Completed13 daysPhone CallCity 311
8/27/20259217 S PRAIRIE AVERoseland6Completed13 daysPhone CallCity 311
9/3/20263525 N OTTAWA AVEDunning38Completed13 daysPhone CallCity 311
7/14/20265325 W GIDDINGS STPortage Park45Completed13 daysInternetCity 311
8/27/20259255 S PRAIRIE AVERoseland6Completed13 daysPhone CallCity 311
9/10/20258924 S MAY STWashington Heights21Completed13 daysPhone CallCity 311
8/27/20259260 S PRAIRIE AVERoseland6Completed13 daysPhone CallCity 311
8/28/20264837 N CENTRAL AVEJefferson Park45Completed13 daysPhone CallCity 311
8/27/20253532 W MONROE STEast Garfield Park28Completed13 daysAlderman's OfficeCity 311
7/14/20265325 W GIDDINGS STPortage Park45Completed13 daysInternetCity 311
7/16/20265557 S MULLIGAN AVEGarfield Ridge13Completed13 daysMobile DeviceCity 311
8/23/20252634 S WELLS STArmour Square11Completed13 daysInternetCity 311
8/27/20267415 W ADDISON STDunning38Completed13 daysPhone CallCity 311
10/7/20251361 W WALTON STWest Town27Completed13 daysPhone CallCity 311
8/13/20252255 N LOWELL AVEHermosa35Completed13 daysAlderman's OfficeCity 311
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