RatCity — Chicago Rat and Rodent Sightings Map

RatCity

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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.

📰 This week’s rat recap

Weekly Rat Trends — Oct 26–Nov 1, 2026

  • 🐀 1,021 new reports — down 9% from the week before
  • 👑 Lake View is Rat King with 70 reports
  • 📈 Biggest jump: Lincoln Park, up 15 from last week
  • 🏙️ The city took 11.2 days on average to resolve a complaint
Read the full recap →

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

59,088 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/20/20265308 S WABASH AVEWashington Park3Completed7 daysInternetCity 311
10/20/20261859 N CLARK STLincoln Park43Completed14 daysMobile DeviceCity 311
10/20/20262553 W 82ND STAshburn18Completed9 daysInternetCity 311
10/20/20261134 N LOREL AVEAustin37Completed14 daysAlderman's OfficeCity 311
10/20/20264143 W KAMERLING AVEHumboldt Park37Completed9 daysPhone CallCity 311
10/20/20263429 N PARIS AVEDunning38Completed6 daysPhone CallCity 311
10/20/20264900 N MARMORA AVEJefferson Park45Completed8 daysPhone CallCity 311
10/20/20261209 S KOLIN AVENorth Lawndale24Completed14 daysMobile DeviceCity 311
10/20/20264232 W GLADYS AVEWest Garfield Park28Completed14 daysInternetCity 311
10/20/20268001 S FRANCISCO AVEAshburn18Completed9 daysPhone CallCity 311
10/20/20261213 S KOLIN AVENorth Lawndale24Completed14 daysMobile DeviceCity 311
10/20/20264175 W NELSON STAvondale31Completed13 daysAlderman's OfficeCity 311
10/20/20261859 N STOCKTON DRLincoln Park43Completed14 daysMobile DeviceCity 311
10/20/20264551 W DEMING PLHermosa31Completed13 daysAlderman's OfficeCity 311
10/20/2026333 W 101ST PLRoseland9Completed13 daysPhone CallCity 311
10/20/20265001 W ARGYLE STJefferson Park45Completed13 daysInternetCity 311
10/20/20261050 N MARSHFIELD AVEWest Town1Completed14 daysMobile DeviceCity 311
10/20/20265639 S JUSTINE STWest Englewood16Completed14 daysAlderman's OfficeCity 311
10/20/20264156 N MENARD AVEPortage Park38Completed14 daysMobile DeviceCity 311
10/20/20264152 N MENARD AVEPortage Park38Completed14 daysMobile DeviceCity 311
10/20/20262814 W 21ST STSouth Lawndale25Completed13 daysInternetCity 311
10/20/20265442 S SPAULDING AVEGage Park14Completed15 daysPhone CallCity 311
10/20/20264335 N DAMEN AVENorth Center47Completed13 daysMobile DeviceCity 311
10/20/20267606 N EASTLAKE TERRogers Park49Completed7 daysPhone CallCity 311
10/20/20263342 W POLK STEast Garfield Park24Completed9 daysPhone CallCity 311
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