RatCity — Chicago Rat and Rodent Sightings Map

RatCity

6 locations in the last day · Last sighting 23 hours ago

📰 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.

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.

📰 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

59,354 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/10/202610905 S EMERALD AVERoseland21Completed8 daysPhone CallCity 311
9/10/20261615 W MONTROSE AVELake View47Completed12 daysMobile DeviceCity 311
9/10/20266035 W DAKIN STDunning38Completed12 daysMobile DeviceCity 311
9/10/20264926 S CORNELL AVEKenwood5Completed12 daysInternetCity 311
9/10/20265144 S LAWNDALE AVEWest Elsdon23Completed12 daysAlderman's OfficeCity 311
9/10/20266911 S KOMENSKY AVEWest Lawn23Completed12 daysPhone CallCity 311
9/10/20265142 S LAWNDALE AVEWest Elsdon23Completed12 daysPhone CallCity 311
9/10/20269800 S MANISTEE AVESouth Deering10Completed13 daysAlderman's OfficeCity 311
9/10/20263127 W LOGAN BLVDLogan Square35Completed12 daysMobile DeviceCity 311
9/10/20269700 S MUSKEGON AVESouth Deering10Completed13 daysWalk-inCity 311
9/10/20266625 S KOSTNER AVEWest Lawn13Completed14 daysInternetCity 311
9/10/20262935 W SUMMERDALE AVELincoln Square39Completed14 daysAlderman's OfficeCity 311
9/10/20262834 W SUMMERDALE AVELincoln Square39Completed14 daysAlderman's OfficeCity 311
9/10/20262929 W BALMORAL AVELincoln Square39Completed14 daysAlderman's OfficeCity 311
9/10/20262834 W BALMORAL AVELincoln Square39Completed14 daysPhone CallCity 311
9/10/20265300 W CORNELIA AVEPortage Park30Completed15 daysPhone CallCity 311
9/10/20264700 S KEDZIE AVEBrighton Park14Completed12 daysMobile DeviceCity 311
9/10/20265304 N ORIOLE AVENorwood Park41Completed13 daysInternetCity 311
9/10/20265304 W NEWPORT AVEPortage Park30Completed18 daysPhone CallCity 311
9/10/20261539 W 16TH STNear West Side25Completed12 daysMobile DeviceCity 311
9/10/20266551 S KEATING AVEClearing13Completed14 daysInternetCity 311
9/10/20262737 W FARGO AVEWest Ridge50Completed14 daysPhone CallCity 311
9/10/20264200 S ARCHER AVEBrighton Park12Completed14 daysMobile DeviceCity 311
9/10/20262530 N KILDARE AVEHermosa31Completed13 daysAlderman's OfficeCity 311
9/10/20264734 S PRAIRIE AVEGrand Boulevard3Completed13 daysPhone CallCity 311
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