RatCity — Chicago Rat and Rodent Sightings Map

RatCity

21 locations in the last day (25 reports) · Last sighting 19 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

58,615 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/29/2026120 E 49TH STGrand Boulevard3Open—Mobile DeviceCity 311
10/29/20268828 S CORNELL AVECalumet Heights8Open—InternetCity 311
10/29/20261708 W 90TH PLWashington Heights21Open—Phone CallCity 311
10/29/202611024 S CENTRAL PARK AVEMount Greenwood19Open—Phone CallCity 311
10/29/20263856 W 82ND STAshburn18Open—Phone CallCity 311
10/29/20261528 N LAWLER AVEAustin37Open—InternetCity 311
10/29/20266148 N MILWAUKEE AVENorwood Park39Open—Mobile DeviceCity 311
10/29/20268818 S CORNELL AVECalumet Heights8Open—InternetCity 311
10/29/20261157 N KEYSTONE AVEHumboldt Park37Completed0 daysInternetCity 311
10/29/20261634 W MORSE AVERogers Park49Open—Phone CallCity 311
10/29/20261250 N MAPLEWOOD AVEWest Town26Open—Mobile DeviceCity 311
10/29/20264601 N DOVER STUptown46Open—InternetCity 311
10/29/20267514 S RIDGELAND AVESouth Shore8Open—Mobile DeviceCity 311
10/29/20268149 W IRVING PARK RDDunning38Open—Mobile DeviceCity 311
10/29/20266916 W HIGGINS AVENorwood Park41Completed0 daysMobile DeviceCity 311
10/29/20266309 N MAGNOLIA AVEEdgewater48Open—InternetCity 311
10/28/20263821 N WILTON AVELake View46Open—InternetCity 311
10/28/20263063 N WASHTENAW AVEAvondale35Open—Mobile DeviceCity 311
10/28/2026412 E 91ST PLChatham8Open—Phone CallCity 311
10/28/20268042 S TROY STAshburn18Open—Mobile DeviceCity 311
10/28/20265653 W BYRON STPortage Park38Open—InternetCity 311
10/28/20266448 S ARTESIAN AVEChicago Lawn16Open—Mobile DeviceCity 311
10/28/2026912 W LELAND AVEUptown46Open—Mobile DeviceCity 311
10/28/20263045 N AVERS AVEAvondale31Open—Phone CallCity 311
10/28/20262910 N SAWYER AVEAvondale35Open—InternetCity 311
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