RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4280 locations in the last 30 days (4471 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 — 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

59,088 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/30/20253030 N ELBRIDGE AVEAvondale35Completed8 daysMobile DeviceCity 311
10/20/20264175 W NELSON STAvondale31Completed13 daysAlderman's OfficeCity 311
7/27/20253523 N WHIPPLE STAvondale33Completed11 daysMobile DeviceCity 311
7/30/20252915 N RICHMOND STAvondale35Completed8 daysInternetCity 311
7/31/20252854 N RICHMOND STAvondale35Completed7 daysMobile DeviceCity 311
7/30/20253134 N ELSTON AVEAvondale35Completed8 daysPhone CallCity 311
7/27/20262945 N MILWAUKEE AVEAvondale35Completed14 daysAlderman's OfficeCity 311
8/7/20252916 N KARLOV AVEAvondale31Completed1 dayPhone CallCity 311
10/11/20262819 N RICHMONDAvondale35Completed15 daysSalesforce Mobile AppCity 311
10/12/20263050 N DAVLIN CTAvondale31Completed16 daysInternetCity 311
7/29/20263603 W WOLFRAM STAvondale35Completed12 daysInternetCity 311
7/29/20263132 W DIVERSEY AVEAvondale35Completed12 daysMobile DeviceCity 311
7/30/20262942 N WHIPPLE STAvondale35Completed12 daysMobile DeviceCity 311
7/31/20252908 N SPRINGFIELD AVEAvondale31Completed11 daysMobile DeviceCity 311
7/31/20254000 W OAKDALE AVEAvondale31Completed12 daysAlderman's OfficeCity 311
10/13/20262845 N WASHTENAW AVEAvondale35Completed15 daysMobile DeviceCity 311
7/31/20253342 N HARDING AVEAvondale30Completed12 daysAlderman's OfficeCity 311
7/31/20253344 N HARDING AVEAvondale30Completed12 daysAlderman's OfficeCity 311
8/3/20264125 W NELSON STAvondale31Completed16 daysPhone CallCity 311
10/13/20264044 W NELSON STAvondale31Completed15 daysAlderman's OfficeCity 311
8/5/20262939 N TALMAN AVEAvondale35Completed16 daysInternetCity 311
8/10/20262956 N SPRINGFIELD AVEAvondale31Completed7 daysPhone CallCity 311
8/3/20253513 N ALBANY AVEAvondale33Completed11 daysInternetCity 311
8/22/20253543 W BELMONT AVEAvondale35Completed12 daysMobile DeviceCity 311
9/24/20252845 N RIDGEWAY AVEAvondale35Completed9 daysPhone CallCity 311
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