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
9/22/20261521 E 84TH PLAvalon Park8Completed14 daysInternetCity 311
9/22/20266641 S HERMITAGE AVEWest Englewood16Completed8 daysAlderman's OfficeCity 311
9/22/20267459 S CHAMPLAIN AVEGreater Grand Crossing6Completed10 daysMobile DeviceCity 311
9/22/2026142 W SWANN STFuller Park20Completed2 daysPhone CallCity 311
9/22/20261637 N FRANCISCO AVEWest Town26Completed10 daysPhone CallCity 311
9/22/20261928 W OHIO STWest Town36Completed14 daysPhone CallCity 311
9/22/2026527 W BARRY AVELake View44Completed10 daysInternetCity 311
9/22/2026644 E 75TH STGreater Grand Crossing6Completed10 daysMobile DeviceCity 311
9/22/20264929 W WARWICK AVEPortage Park30Completed10 daysPhone CallCity 311
9/22/20265604 S WOLCOTT AVEWest Englewood15Completed10 daysPhone CallCity 311
9/22/20264021 N MELVINA AVEPortage Park38Completed13 daysPhone CallCity 311
9/22/20261614 W WILSON AVEUptown47Completed14 daysInternetCity 311
9/22/202666 E 21ST STNear South Side3Completed9 daysPhone CallCity 311
9/22/20261330 W CHASE AVERogers Park49Completed13 daysPhone CallCity 311
9/22/202611336 S INDIANA AVERoseland9Completed7 daysAlderman's OfficeCity 311
9/22/20262700 S SPRINGFIELD AVESouth Lawndale22Completed9 daysPhone CallCity 311
9/22/20262609 N SAWYER AVELogan Square35Completed10 daysPhone CallCity 311
9/22/20261217 W LAWRENCE AVEUptown46Completed13 daysInternetCity 311
9/22/20262024 W THOMAS STWest Town1Completed15 daysInternetCity 311
9/22/20264647 W GRACE STPortage Park45Completed13 daysPhone CallCity 311
9/22/2026344 W WISCONSIN STLincoln Park43Completed13 daysMobile DeviceCity 311
9/22/20264828 N MERRIMAC AVEJefferson Park45Completed13 daysMobile DeviceCity 311
9/22/20267214 N ROGERS AVERogers Park49Completed15 daysPhone CallCity 311
9/22/20264805 S WOLCOTT AVENew City15Completed10 daysPhone CallCity 311
9/22/20264769 N LONG AVEPortage Park45Completed13 daysPhone CallCity 311
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