RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4317 locations in the last 30 days (4509 reports) · Last sighting 17 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
10/29/20254113 W WELLINGTON AVEAvondale31Completed5 daysPhone CallCity 311
3/3/20262939 N HAMLIN AVEAvondale31Completed3 daysMobile DeviceCity 311
6/30/20263302 N SACRAMENTO AVEAvondale33Completed7 daysInternetCity 311
10/5/20264144 W FLETCHER STAvondale31Completed15 daysInternetCity 311
3/18/20263343 N PULASKI RDAvondale30Completed1 dayMobile DeviceCity 311
3/30/20263201 N RIDGEWAY AVEAvondale30Completed2 daysAlderman's OfficeCity 311
9/15/20254155 W WELLINGTON AVEAvondale31Completed11 daysMobile DeviceCity 311
7/7/20262906 N WOODARD STAvondale35Completed2 daysPhone CallCity 311
10/5/20263133 N HARDING AVEAvondale31Completed15 daysInternetCity 311
11/19/20253358 N HAMLIN AVEAvondale30Completed1 dayAlderman's OfficeCity 311
7/2/20264182 W NELSON STAvondale31Completed6 daysAlderman's OfficeCity 311
3/11/20263101 N HAUSSEN CTAvondale31Completed5 daysInternetCity 311
2/27/20263337 W BELMONT AVEAvondale35Completed4 daysPhone CallCity 311
7/2/20264014 W BARRY AVEAvondale31Completed6 daysPhone CallCity 311
9/22/20263127 N LAWNDALE AVEAvondale35Completed10 daysInternetCity 311
11/4/20252957 N LAWNDALE AVEAvondale35Completed2 daysAlderman's OfficeCity 311
10/25/20252975 N LAWNDALE AVEAvondale35Completed5 daysPhone CallCity 311
9/14/20254140 W OAKDALE AVEAvondale31Completed10 daysInternetCity 311
3/13/20264045 W BARRY AVEAvondale31Completed3 daysAlderman's OfficeCity 311
3/30/20263201 N AVERS AVEAvondale30Completed2 daysAlderman's OfficeCity 311
9/15/20263802 W CORNELIA AVEAvondale30Completed14 daysPhone CallCity 311
2/27/20263333 W BELMONT AVEAvondale35Completed4 daysPhone CallCity 311
3/12/20264058 W OAKDALE AVEAvondale31Completed4 daysMobile DeviceCity 311
3/2/20263727 W EDDY STAvondale30Completed1 dayInternetCity 311
6/29/20262839 N HAMLIN AVEAvondale35Completed7 daysInternetCity 311
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