RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4169 locations in the last 30 days (4353 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.

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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 — 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

59,712 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
7/13/20265400 W PARKER AVEBelmont Cragin31Completed14 daysAlderman's OfficeCity 311
9/10/20264641 W MONTANA STBelmont Cragin31Completed13 daysPhone CallCity 311
8/15/20262930 N PARKSIDE AVEBelmont Cragin31Completed11 daysMobile DeviceCity 311
9/13/20255140 W ALTGELD STBelmont Cragin31Completed11 daysInternetCity 311
6/17/20264942 W HENDERSON STPortage Park31Completed1 dayPhone CallCity 311
7/21/20264634 W DEMING PLBelmont Cragin31Completed13 daysInternetCity 311
10/19/20262314 N LOWELL AVEHermosa31Completed14 daysPhone CallCity 311
9/28/20265040 W FULLERTON AVEBelmont Cragin31Completed16 daysMobile DeviceCity 311
7/13/20263100 N KILPATRICK AVEBelmont Cragin31Completed14 daysAlderman's OfficeCity 311
9/13/20252948 N HAMLIN AVEAvondale31Completed11 daysInternetCity 311
9/8/20254640 W DEMING PLBelmont Cragin31Completed11 daysPhone CallCity 311
8/31/20264900 W DEMING PLBelmont Cragin31Completed15 daysAlderman's OfficeCity 311
6/16/20265146 W MELROSE STPortage Park31Completed2 daysPhone CallCity 311
6/16/20265111 W ADDISON STPortage Park31Completed2 daysInternetCity 311
8/11/20264141 W NELSON STAvondale31Completed13 daysMobile DeviceCity 311
9/25/20264521 W MONTANA STHermosa31Completed14 daysInternetCity 311
6/16/20265007 W ADDISON STPortage Park31Completed2 daysInternetCity 311
11/2/20264238 W FULLERTON AVEHermosa31Open—InternetCity 311
10/9/20262311 N LOWELL AVEHermosa31Completed17 daysAlderman's OfficeCity 311
8/17/20263090 N HAUSSEN CTAvondale31Completed14 daysInternetCity 311
9/14/20254140 W OAKDALE AVEAvondale31Completed10 daysInternetCity 311
9/22/20264937 W FLETCHER STBelmont Cragin31Completed10 daysMobile DeviceCity 311
10/2/20264525 W PARKER AVEHermosa31Completed7 daysInternetCity 311
7/24/20264148 W WELLINGTON AVEAvondale31Completed10 daysMobile DeviceCity 311
7/13/20265300 W NELSON STBelmont Cragin31Completed14 daysAlderman's OfficeCity 311
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