RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4164 locations in the last 30 days (4346 reports) · Last sighting 20 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 — Nov 2–Nov 8, 2026

  • 🐀 948 new reports — down 7% from the week before
  • 👑 Lake View is Rat King with 67 reports
  • 📈 Biggest jump: Logan Square, up 15 from last week
  • 🏙️ The city took 9.7 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

59,989 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/27/2025226 W 107TH STRoseland21Completed8 daysInternetCity 311
9/28/2026322 W 106TH STRoseland21Completed15 daysPhone CallCity 311
7/24/20269919 S WENTWORTH AVERoseland9Completed12 daysAlderman's OfficeCity 311
9/24/2026314 W 101ST STRoseland9Completed14 daysPhone CallCity 311
8/12/202610521 S WALLACE STRoseland21Completed5 daysPhone CallCity 311
9/19/202651 E 98TH STRoseland9Completed10 daysPhone CallCity 311
7/23/2026341 W 101ST STRoseland9Completed13 daysPhone CallCity 311
9/9/202610626 S LOWE AVERoseland21Completed14 daysPhone CallCity 311
7/29/202610825 S PARNELL AVERoseland21Completed6 daysMobile DeviceCity 311
9/10/202610041 S YALE AVERoseland9Completed11 daysAlderman's OfficeCity 311
7/24/20269908 S LAFAYETTE AVERoseland9Completed12 daysPhone CallCity 311
9/21/202610626 S LOWE AVERoseland21Completed7 daysPhone CallCity 311
10/6/202668 E 100TH STRoseland9Completed16 daysPhone CallCity 311
7/23/2026143 W 103RD PLRoseland9Completed13 daysMobile DeviceCity 311
8/23/2026138 W 105TH STRoseland9Completed3 daysPhone CallCity 311
9/20/2026314 W 101ST STRoseland9Completed9 daysPhone CallCity 311
9/21/202610516 S EGGLESTON AVERoseland21Completed7 daysPhone CallCity 311
9/9/20269635 S LA SALLE STRoseland9Completed12 daysPhone CallCity 311
9/30/202618 W 109TH STRoseland9Completed1 dayInternetCity 311
10/6/202611218 S PARNELL AVERoseland21Completed13 daysInternetCity 311
8/17/202610509 S LASALLE STRoseland9Completed1 dayPhone CallCity 311
9/9/202610435 S WENTWORTH AVERoseland9Completed12 daysPhone CallCity 311
9/17/20269717 S PRAIRIE AVERoseland9Completed13 daysPhone CallCity 311
8/3/202611138 S EMERALD AVERoseland21Completed2 daysPhone CallCity 311
8/26/202611428 S CALUMET AVERoseland9Completed9 daysInternetCity 311
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