RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4627 locations in the last 30 days (4788 reports) · Last sighting 17 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

54,128 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/16/20257220 S CONSTANCE AVESouth Shore7Completed6 daysMobile DeviceCity 311
9/7/20257220 S CONSTANCE AVESouth Shore7Completed9 daysInternetCity 311
2/27/20267220 N ROGERS AVERogers Park49Completed4 daysPhone CallCity 311
8/28/20267220 N CLAREMONT AVEWest Ridge50Completed12 daysInternetCity 311
4/1/2026721 W DIVERSEY AVELincoln Park43Completed1 dayAlderman's OfficeCity 311
11/5/2025721 W 50TH STNew City20Completed2 daysInternetCity 311
8/6/2025721 S KARLOVWest Garfield Park24Completed7 daysSalesforce Mobile AppCity 311
9/23/20267219 W OLIVE AVENorwood Park41Canceled0 daysPhone CallCity 311
9/10/20267219 W OLIVE AVENorwood Park41Completed13 daysPhone CallCity 311
8/26/20257219 W OLIVE AVENorwood Park41Completed10 daysPhone CallCity 311
10/10/20257219 W OLIVE AVENorwood Park41Completed7 daysPhone CallCity 311
10/7/20257219 W MYRTLE AVENorwood Park41Completed10 daysPhone CallCity 311
6/16/20267219 S WOODLAWN AVEGreater Grand Crossing5Completed1 dayInternetCity 311
7/25/20257219 S CAMPBELL AVEChicago Lawn18Completed10 daysPhone CallCity 311
3/27/20267219 S CALIFORNIA AVEChicago Lawn18Completed3 daysPhone CallCity 311
8/8/20257219 S CALIFORNIA AVEChicago Lawn18Completed6 daysPhone CallCity 311
9/30/20267218 W BRYN MAWR AVENorwood Park41Completed1 dayPhone CallCity 311
9/12/20267218 S PERRY AVEGreater Grand Crossing6Completed11 daysInternetCity 311
10/1/20267218 S HOYNE AVEWest Englewood17Open—Mobile DeviceCity 311
8/11/20257218 S FAIRFIELD AVEChicago Lawn18Completed4 daysPhone CallCity 311
2/7/20267218 N ROGERS AVERogers Park49Completed2 daysInternetCity 311
6/18/20267218 N ROGERS AVERogers Park49Completed5 daysInternetCity 311
10/8/20257217 S MERRILL AVESouth Shore5Completed9 daysPhone CallCity 311
1/8/20267217 S CALIFORNIA AVEChicago Lawn18Completed1 dayMobile DeviceCity 311
9/26/20267217 S CALIFORNIA AVEChicago Lawn18Open—Mobile DeviceCity 311
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