RatCity — Chicago Rat and Rodent Sightings Map

RatCity

43018 locations in the last year (44148 reports) · Last sighting 21 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

59,447 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/4/20262459 N STOCKTON DRLincoln Park43Open—Mobile DeviceCity 311
11/4/20266622 S OAKLEY AVEChicago Lawn16Completed1 dayPhone CallCity 311
11/4/20262751 N SEMINARY AVELincoln Park43Completed1 dayPhone CallCity 311
11/4/20262200 N BISSELL STLincoln Park43Open—Phone CallCity 311
11/4/20263012 W CHASE AVEWest Ridge50Open—InternetCity 311
11/4/20263039 W AINSLIE STAlbany Park33Open—Phone CallCity 311
11/4/20261611 W JUNEWAY TERRogers Park49Open—Mobile DeviceCity 311
11/4/20261955 N HALSTED STLincoln Park43Completed1 dayPhone CallCity 311
11/4/20264101 W POTOMAC AVEHumboldt Park37Completed1 dayMobile DeviceCity 311
11/4/20265325 W WAVELAND AVEPortage Park30Open—InternetCity 311
11/4/20267047 S CALIFORNIA AVEChicago Lawn17Open—Phone CallCity 311
11/4/20265245 S LUNA AVEGarfield Ridge23Open—InternetCity 311
11/4/20265842 S ARCHER AVEGarfield Ridge23Open—InternetCity 311
11/4/20263304 W BEACH AVEHumboldt Park26Open—InternetCity 311
11/4/20266804 W HIGGINS AVENorwood Park41Open—Phone CallCity 311
11/4/20261955 N HALSTED STLincoln Park43Completed1 dayInternetCity 311
11/4/20263539 N GREENVIEW AVELake View47Open—Phone CallCity 311
11/4/20261949 N HALSTED STLincoln Park43Completed1 dayMobile DeviceCity 311
11/4/20265021 W ROSCOE STPortage Park31Open—Phone CallCity 311
11/4/20261221 S AVERS AVENorth Lawndale24Open—Mobile DeviceCity 311
11/4/20265331 W NEWPORT AVEPortage Park30Open—Phone CallCity 311
11/4/20269300 S LOOMIS STWashington Heights21Open—Phone CallCity 311
11/4/20261117 W WOLFRAM STLake View44Open—Phone CallCity 311
11/4/20266643 S KARLOV AVEWest Lawn13Open—InternetCity 311
11/4/20265021 N NOTTINGHAM AVENorwood Park41Open—Phone CallCity 311
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