RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4450 locations in the last 30 days (4621 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

57,792 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
3/27/20263720 N PITTSBURGH AVEDunning38Completed3 daysPhone CallCity 311
5/26/202610046 S LAFAYETTE AVERoseland9Completed3 daysPhone CallCity 311
11/15/20257136 S CARPENTER STEnglewood17Completed3 daysPhone CallCity 311
6/15/20263229 S AVERS AVESouth Lawndale22Completed3 daysPhone CallCity 311
11/2/20255258 W WINNEMAC AVEJefferson Park45Completed3 daysMobile DeviceCity 311
11/14/20256501 N WESTERN AVEWest Ridge40Completed3 daysInternetCity 311
11/3/20252315 S LEAVITT STLower West Side25Completed3 daysAlderman's OfficeCity 311
4/28/20265600 S ARCHER AVEGarfield Ridge23Completed3 daysPhone CallCity 311
11/25/20257342 S PAULINA STWest Englewood17Completed3 daysInternetCity 311
5/10/20266135 W MONTROSE AVEPortage Park38Completed3 daysPhone CallCity 311
11/10/20256154 N NAGLE AVENorwood Park45Completed3 daysInternetCity 311
12/30/20252123 W 55TH STWest Englewood15Completed3 daysPhone CallCity 311
5/24/20267769 S KOMENSKY AVEAshburn18Completed3 daysInternetCity 311
5/4/20261731 N CENTRAL PARK AVEHumboldt Park26Completed3 daysMobile DeviceCity 311
6/22/20264523 S ELLIS AVEKenwood4Completed3 daysMobile DeviceCity 311
11/10/20256148 N NAGLE AVENorwood Park45Completed3 daysInternetCity 311
3/20/202610228 S HARDING AVEMount Greenwood19Completed3 daysPhone CallCity 311
5/1/202610326 S CHRISTIANA AVEMount Greenwood19Completed3 daysAlderman's OfficeCity 311
6/9/20263641 W MARQUETTE RDWest Lawn23Completed3 daysAlderman's OfficeCity 311
2/13/20262647 N MARSHFIELD AVELincoln Park32Completed3 daysInternetCity 311
11/10/20253701 N PITTSBURGH AVEDunning38Completed3 daysAlderman's OfficeCity 311
10/7/202510843 S PRAIRIE AVERoseland9Completed3 daysPhone CallCity 311
3/2/20263920 N CALIFORNIA AVEIrving Park35Completed3 daysInternetCity 311
5/26/202610052 S LAFAYETTE AVERoseland9Completed3 daysPhone CallCity 311
6/19/20265136 S MILLARD AVEWest Elsdon23Completed3 daysInternetCity 311
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