RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4384 locations in the last 30 days (4539 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.

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

53,341 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/21/20251879 N LEAVITT STLogan Square32Completed14 daysAlderman's OfficeCity 311
8/10/20264440 N MERRIMAC AVEPortage Park38Completed14 daysMobile DeviceCity 311
7/14/20264414 S LOWE AVENew City15Completed14 daysMobile DeviceCity 311
8/18/20265279 N LIND AVEJefferson Park45Completed14 daysPhone CallCity 311
7/31/2026501 W 45TH STNew City15Completed14 daysAlderman's OfficeCity 311
9/7/20262455 N NEWCASTLE AVEMontclare36Completed14 daysPhone CallCity 311
8/6/20265211 W MELROSE STPortage Park30Completed14 daysAlderman's OfficeCity 311
8/6/20263342 N CENTRAL PARK AVEAvondale30Completed14 daysPhone CallCity 311
8/20/20262128 W MONTROSE AVELincoln Square47Completed14 daysPhone CallCity 311
9/3/20265551 N CALIFORNIA AVELincoln Square40Completed14 daysPhone CallCity 311
8/18/20265300 W ADDISON STPortage Park30Completed14 daysInternetCity 311
8/28/20255023 S KILPATRICK AVEGarfield Ridge14Completed14 daysInternetCity 311
8/11/20264454 S DREXEL BLVDKenwood4Completed14 daysInternetCity 311
8/13/20269828 S AVENUE JEast Side10Completed14 daysWalk-inCity 311
8/26/2025707 E 91ST STChatham8Completed14 daysAlderman's OfficeCity 311
9/8/20266217 S MASSASOIT AVEClearing13Completed14 daysInternetCity 311
7/28/20261727 W ARTHUR AVERogers Park40Completed14 daysMobile DeviceCity 311
8/26/20252920 N KENOSHA AVEHermosa31Completed14 daysPhone CallCity 311
7/15/20265172 W 63RD PLClearing13Completed14 daysPhone CallCity 311
8/31/20266240 N KEDVALE AVEForest Glen39Completed14 daysInternetCity 311
8/13/20266254 W BRYN MAWR AVENorwood Park45Completed14 daysPhone CallCity 311
8/21/20254900 N MERRIMAC AVEJefferson Park45Completed14 daysPhone CallCity 311
7/28/20265960 N MCCOOK AVENorwood Park45Completed14 daysAlderman's OfficeCity 311
8/25/20251200 N HARDING AVEHumboldt Park37Completed14 daysPhone CallCity 311
8/27/20262850 N DRAKEAvondale35Completed14 daysSalesforce Mobile AppCity 311
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