RatCity — Chicago Rat and Rodent Sightings Map

RatCity

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📰 Blog
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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

59,447 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
8/10/202640 N PARKSIDE AVEAustin29Completed4 daysAlderman's OfficeCity 311
8/10/20269500 S COMMERCIAL AVESouth Deering10Completed14 daysAlderman's OfficeCity 311
8/10/20266042 S NASHVILLE AVEClearing13Completed14 daysAlderman's OfficeCity 311
8/10/20261117 W 17TH STLower West Side25Completed1 dayInternetCity 311
8/10/20262703 N CENTRAL PARK AVELogan Square35Completed15 daysInternetCity 311
8/10/20262925 W SHERWIN AVEWest Ridge50Completed8 daysMobile DeviceCity 311
8/10/20265826 N VIRGINIA AVEWest Ridge50Completed16 daysAlderman's OfficeCity 311
8/10/20265237 W BERTEAU AVEPortage Park38Completed15 daysInternetCity 311
8/10/20264201 N PULASKI RDIrving Park39Completed7 daysInternetCity 311
8/10/20266239 N CALIFORNIA AVEWest Ridge50Completed8 daysMobile DeviceCity 311
8/10/20261967 N MAUD AVELincoln Park43Completed15 daysInternetCity 311
8/10/2026415 W GRANT PLLincoln Park43Completed15 daysPhone CallCity 311
8/10/20266100 N NAPER AVENorwood Park45Completed15 daysAlderman's OfficeCity 311
8/10/202611164 S ST LOUIS AVEMount Greenwood19Completed4 daysInternetCity 311
8/10/20265500 W IRVING PARK RDPortage Park38Completed15 daysPhone CallCity 311
8/10/20266042 S NASHVILLE AVEClearing13Completed14 daysPhone CallCity 311
8/10/20261845 W SUPERIOR STWest Town36Completed15 daysMobile DeviceCity 311
8/10/20263223 N OVERHILL AVEDunning38Completed16 daysInternetCity 311
8/10/20263834 S ARCHER AVEBrighton Park12Completed10 daysAlderman's OfficeCity 311
8/10/20263636 N PIONEER AVEDunning38Completed2 daysPhone CallCity 311
8/10/20264415 N FRANCISCO AVEAlbany Park33Completed14 daysInternetCity 311
8/10/20266425 N BELL AVEWest Ridge50Completed8 daysInternetCity 311
8/10/20267809 S HOMAN AVEAshburn18Completed8 daysPhone CallCity 311
8/10/20261624 W CATALPA AVEEdgewater40Completed11 daysMobile DeviceCity 311
8/10/20265728 N MERRIMAC AVENorwood Park45Completed15 daysInternetCity 311
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