RatCity — Chicago Rat and Rodent Sightings Map

RatCity

43006 locations in the last year (44136 reports) · Last sighting yesterday

📰 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

59,447 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/30/20264141 W NELSON STAvondale31Open—Alderman's OfficeCity 311
10/30/20268519 S BUFFALO AVESouth Chicago10Completed3 daysPhone CallCity 311
10/30/20268342 S LA SALLE STChatham6Open—Phone CallCity 311
10/30/20266257 N WAYNE AVEEdgewater48Completed6 daysInternetCity 311
10/30/20264643 N KOSTNER AVEIrving Park39Open—Phone CallCity 311
10/30/20261900 S MICHIGAN AVENear South Side3Completed7 daysMobile DeviceCity 311
10/30/20263135 N OCONTO AVEDunning29Completed3 daysPhone CallCity 311
10/30/20262831 N HARLEM AVEMontclare29Completed3 daysPhone CallCity 311
10/30/20261522 N LA SALLE STNear North Side2Completed3 daysPhone CallCity 311
10/30/20261531 N HUDSON AVENear North Side2Completed3 daysPhone CallCity 311
10/30/20262437 W THOMAS STWest Town36Completed3 daysPhone CallCity 311
10/30/20265136 S MERRIMAC AVEGarfield Ridge23Open—Phone CallCity 311
10/30/20261104 N LOREL AVEAustin37Completed3 daysPhone CallCity 311
10/30/20262626 W TOUHY AVEWest Ridge50Completed3 daysPhone CallCity 311
10/30/20262209 W HIGHLAND AVEWest Ridge50Open—Phone CallCity 311
10/30/202610942 S MEast Side10Open—Mobile DeviceCity 311
10/30/20263646 S MARSHFIELD AVEMcKinley Park11Open—Alderman's OfficeCity 311
10/30/20261043 N LARAMIE AVEAustin37Completed4 daysPhone CallCity 311
10/30/20262744 N SOUTHPORT AVELincoln Park32Completed6 daysInternetCity 311
10/30/20265229 S JUSTINE STNew City16Completed7 daysPhone CallCity 311
10/30/2026548 W DIVISION STNear North Side27Open—Mobile DeviceCity 311
10/30/2026718 W CORNELIA AVELake View46Open—InternetCity 311
10/30/20263039 W WILSON AVEAlbany Park33Completed3 daysPhone CallCity 311
10/30/20262409 N SPAULDING AVELogan Square35Completed5 daysInternetCity 311
10/30/20265126 S THROOP STNew City20Completed6 daysInternetCity 311
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