RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4560 locations in the last 30 days (4724 reports) · Last sighting 13 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

53,164 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/31/20263525 N NORMANDY AVEDunning38Completed18 daysPhone CallCity 311
8/27/202611347 S MILLARD AVEMount Greenwood19Completed18 daysMobile DeviceCity 311
8/14/20269319 S PHILLIPS AVECalumet Heights7Completed18 daysInternetCity 311
7/31/20256115 N SPRINGFIELD AVENorth Park39Completed18 daysPhone CallCity 311
8/3/20263404 N OCONTO AVEDunning38Completed18 daysMobile DeviceCity 311
8/1/20267514 S RIDGELAND AVESouth Shore8Completed18 daysMobile DeviceCity 311
8/3/20265722 W GRACE STPortage Park38Completed18 daysInternetCity 311
7/30/20262500 W THOMAS STWest Town36Completed18 daysPhone CallCity 311
9/3/20266622 S TROY STChicago Lawn14Completed18 daysPhone CallCity 311
7/24/20264305 N MASON AVEPortage Park38Completed18 daysPhone CallCity 311
8/3/20263456 N RUTHERFORD AVEDunning38Completed18 daysMobile DeviceCity 311
8/11/20256132 S KNOX AVEClearing13Completed18 daysAlderman's OfficeCity 311
8/7/2026343 E 25TH PLNear South Side4Completed18 daysInternetCity 311
8/3/20262106 N TRIPP AVEHermosa35Completed18 daysInternetCity 311
8/27/20261543 S SPAULDING AVENorth Lawndale24Completed18 daysPhone CallCity 311
7/31/20263427 N OTTAWA AVEDunning38Completed18 daysPhone CallCity 311
7/30/20261300 N HARDING AVEHumboldt Park36Completed18 daysPhone CallCity 311
7/24/20263920 N NORA AVEDunning38Completed18 daysMobile DeviceCity 311
8/7/20262105 N LARRABEE STLincoln Park43Completed18 daysMobile DeviceCity 311
7/23/20266341 W BERTEAU AVEPortage Park38Completed18 daysInternetCity 311
8/3/20263530 N OCTAVIA AVEDunning38Completed18 daysInternetCity 311
8/3/20266017 W BERENICE AVEDunning38Completed18 daysInternetCity 311
8/14/20262726 N ST LOUIS AVELogan Square35Completed18 daysMobile DeviceCity 311
8/3/20263538 N NOTTINGHAM AVEDunning38Completed18 daysMobile DeviceCity 311
7/31/20263622 N OZANAM AVEDunning38Completed18 daysPhone CallCity 311
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