RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4542 locations in the last 30 days (4689 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

55,547 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/13/20256236 W DIVERSEY AVEBelmont Cragin30Completed1 dayAlderman's OfficeCity 311
7/31/20256236 W DIVERSEY AVEBelmont Cragin30Completed8 daysAlderman's OfficeCity 311
2/13/20266236 W DIVERSEY AVEBelmont Cragin30Completed3 daysAlderman's OfficeCity 311
8/14/20266236 S MULLIGAN AVEClearing13Completed11 daysPhone CallCity 311
4/7/20266236 S MOBILE AVEClearing13Completed2 daysMobile DeviceCity 311
12/15/20256236 S INDIANA AVEWashington Park20Completed0 daysInternetCity 311
7/17/20266236 N RICHMOND STWest Ridge50Completed12 daysPhone CallCity 311
9/19/20256236 N MAPLEWOOD AVEWest Ridge50Completed6 daysPhone CallCity 311
9/2/20256236 N MAPLEWOOD AVEWest Ridge50Completed9 daysPhone CallCity 311
3/30/20266236 N LENOX AVEForest Glen39Completed1 dayMobile DeviceCity 311
10/26/20256236 N KILDARE AVEForest Glen39Completed4 daysMobile DeviceCity 311
10/13/20256236 N KILDARE AVEForest Glen39Completed3 daysMobile DeviceCity 311
6/12/20266236 N CICERO AVEForest Glen39Completed3 daysMobile DeviceCity 311
3/23/20266236 N BELL AVEWest Ridge50Completed1 dayPhone CallCity 311
7/6/20266236 N AVERS AVENorth Park39Completed7 daysInternetCity 311
11/20/20256235 W HOLBROOK STNorwood Park39Completed1 dayMobile DeviceCity 311
9/14/20266235 W HENDERSON STDunning30Completed14 daysAlderman's OfficeCity 311
5/21/20266235 W GRACE STDunning38Completed5 daysInternetCity 311
8/22/20256235 W GRACE STDunning38Completed6 daysMobile DeviceCity 311
9/2/20256235 W CUYLER AVEPortage Park38Completed13 daysInternetCity 311
7/1/20266235 S PARKSIDE AVEClearing13Completed6 daysAlderman's OfficeCity 311
9/10/20266235 S MOODY AVEClearing13Completed12 daysInternetCity 311
8/20/20266235 S MAJOR AVEClearing13Completed8 daysMobile DeviceCity 311
9/1/20256235 S MAJOR AVEClearing13Completed14 daysMobile DeviceCity 311
7/9/20266235 S MAJOR AVEClearing13Completed12 daysMobile DeviceCity 311
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