RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4288 locations in the last 30 days (4445 reports) · Last sighting 11 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.

32080fewer → more

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

56,467 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
3/24/20262107 N MARMORA AVEBelmont Cragin36Completed1 dayMobile DeviceCity 311
4/6/20262107 N MASON AVEBelmont Cragin36Completed1 dayAlderman's OfficeCity 311
4/17/20262107 N MASON AVEBelmont Cragin36Completed3 daysPhone CallCity 311
4/28/20262107 N MERRIMAC AVEBelmont Cragin36Completed0 daysInternetCity 311
10/23/20252107 S FAIRFIELD AVESouth Lawndale25Completed5 daysMobile DeviceCity 311
8/14/20262107 W NORTH AVEWest Town1Completed10 daysMobile DeviceCity 311
5/9/20262107 W RANDOLPH STNear West Side27Completed3 daysMobile DeviceCity 311
5/4/20262107 W SUPERIOR STWest Town36Completed2 daysMobile DeviceCity 311
10/21/20252108 N CLIFTON AVELincoln Park2Completed8 daysAlderman's OfficeCity 311
10/29/20252108 N HALSTED STLincoln Park43Completed2 daysInternetCity 311
8/10/20262108 N HALSTED STLincoln Park43Completed15 daysInternetCity 311
6/8/20262108 N HALSTED STLincoln Park43Completed3 daysPhone CallCity 311
9/29/20252108 N LOCKWOOD AVEBelmont Cragin36Completed7 daysInternetCity 311
9/30/20262108 N STAVE STLogan Square1Completed13 daysInternetCity 311
9/7/20252108 N STAVE STLogan Square1Completed11 daysMobile DeviceCity 311
3/29/20262108 N STAVE STLogan Square1Completed1 dayMobile DeviceCity 311
9/3/20262108 N TRIPP AVEHermosa35Completed13 daysMobile DeviceCity 311
9/26/20252108 S ARCHER AVEArmour Square11Completed10 daysMobile DeviceCity 311
6/10/20262108 W 22ND PLLower West Side25Completed1 dayInternetCity 311
3/23/20262108 W 71ST PLWest Englewood17Completed3 daysPhone CallCity 311
9/28/20262109 N LARAMIE AVEBelmont Cragin26Completed11 daysPhone CallCity 311
9/10/20262109 N LONG AVEBelmont Cragin36Completed12 daysMobile DeviceCity 311
5/29/20262109 N LONG AVEBelmont Cragin36Completed5 daysMobile DeviceCity 311
9/9/20262109 N MAJOR AVEBelmont Cragin36Completed1 dayPhone CallCity 311
4/1/20262109 N SEMINARY AVELincoln Park43Completed1 dayInternetCity 311
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