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

59,238 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/19/20268230 S ELLIS AVEChatham8Completed13 daysPhone CallCity 311
9/19/20268228 S ELLIS AVEChatham8Completed13 daysPhone CallCity 311
9/19/20268118 S ELLIS AVEChatham8Completed13 daysPhone CallCity 311
9/19/2026432 E 48TH PLGrand Boulevard3Completed11 daysPhone CallCity 311
9/19/20264726 N DOVER STUptown46Completed11 daysInternetCity 311
9/19/20262329 W MORSE AVEWest Ridge40Completed10 daysMobile DeviceCity 311
9/19/20263540 N LAKEWOOD AVELake View44Completed13 daysInternetCity 311
9/19/20265227 N MAGNOLIA AVEEdgewater48Completed6 daysMobile DeviceCity 311
9/19/20264912 S KNOX AVEGarfield Ridge14Completed12 daysInternetCity 311
9/19/20263042 S AVERS AVESouth Lawndale22Completed10 daysInternetCity 311
9/19/20267342 S CLAREMONT AVEChicago Lawn18Completed12 daysMobile DeviceCity 311
9/19/20263341 W LE MOYNE STHumboldt Park26Completed12 daysInternetCity 311
9/19/20263137 N AUSTIN AVEBelmont Cragin30Completed12 daysInternetCity 311
9/19/20265801 W MADISON STAustin29Completed12 daysInternetCity 311
9/19/202651 E 98TH STRoseland9Completed10 daysPhone CallCity 311
9/19/20266833 S CRANDON AVESouth Shore5Completed12 daysInternetCity 311
9/19/20264118 N PARKSIDE AVEPortage Park38Completed10 daysPhone CallCity 311
9/19/20264515 W THOMAS STHumboldt Park37Completed10 daysInternetCity 311
9/19/20265544 S NEWLAND AVEGarfield Ridge13Completed12 daysMobile DeviceCity 311
9/19/20264501 W THOMAS STHumboldt Park37Completed10 daysInternetCity 311
9/19/20264527 W THOMAS STHumboldt Park37Completed10 daysInternetCity 311
9/19/20264135 N MARMORA AVEPortage Park38Completed10 daysPhone CallCity 311
9/19/20264514 W THOMAS STHumboldt Park37Completed10 daysInternetCity 311
9/19/20263145 N PAULINA STLake View32Completed12 daysInternetCity 311
9/19/20263658 W MARQUETTE RDWest Lawn23Completed13 daysPhone CallCity 311
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