RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4315 locations in the last 30 days (4471 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.

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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

56,145 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/12/20256221 N KARLOV AVEForest Glen39Completed11 daysAlderman's OfficeCity 311
9/4/20256281 N CICERO AVEForest Glen39Completed12 daysAlderman's OfficeCity 311
4/8/20266149 N KARLOV AVEForest Glen39Completed2 daysInternetCity 311
10/29/20256270 N CICERO AVEForest Glen39Completed1 dayPhone CallCity 311
4/8/20266100 N KEELER AVEForest Glen39Completed2 daysMobile DeviceCity 311
11/3/20257036 N HIAWATHA AVEForest Glen45Completed1 dayPhone CallCity 311
8/23/20267131 N MERRIMAC AVEForest Glen45Completed16 daysMobile DeviceCity 311
10/29/20254819 W ROSEMONT AVEForest Glen39Completed1 dayPhone CallCity 311
10/30/20254829 W CATALPA AVEForest Glen39Completed4 daysPhone CallCity 311
4/9/20264953 W WINONA STForest Glen45Completed4 daysInternetCity 311
10/30/20255826 N KOLMAR AVEForest Glen39Completed4 daysMobile DeviceCity 311
9/11/20255430 N LAWLER AVEForest Glen39Completed12 daysAlderman's OfficeCity 311
4/13/20266254 N KILPATRICK AVEForest Glen39Completed1 dayMobile DeviceCity 311
3/21/20266247 N KILDARE AVEForest Glen39Completed2 daysInternetCity 311
3/21/20265306 W DEVON AVEForest Glen45Completed2 daysInternetCity 311
3/20/20264856 W AINSLIEForest Glen45Completed3 daysSalesforce Mobile AppCity 311
11/21/20256270 N CICERO AVEForest Glen39Completed4 daysPhone CallCity 311
11/23/20256256 N CICERO AVEForest Glen39Completed2 daysMobile DeviceCity 311
11/23/20256246 N CICERO AVEForest Glen39Completed2 daysMobile DeviceCity 311
9/4/20256205 N TRIPP AVEForest Glen39Completed13 daysInternetCity 311
8/4/20266205 N CICERO AVEForest Glen39Completed14 daysInternetCity 311
4/13/20265158 N ELSTON AVEForest Glen45Completed2 daysPhone CallCity 311
3/15/20266904 N MCALPIN AVEForest Glen45Completed1 dayInternetCity 311
8/14/20266450 N ALGONQUIN AVEForest Glen45Completed13 daysPhone CallCity 311
9/10/20254939 W AINSLIE STForest Glen45Completed8 daysInternetCity 311
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