RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4101 locations in the last 30 days (4285 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.

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
7/2/20266933 W BALMORAL AVENorwood Park41Completed5 daysInternetCity 311
2/18/20264537 S CALUMET AVEGrand Boulevard3Completed5 daysInternetCity 311
10/16/20251237 W WELLINGTON AVELake View32Completed5 daysMobile DeviceCity 311
10/22/20255615 W 64TH PLClearing13Completed5 daysInternetCity 311
6/19/20267305 S MOZART STChicago Lawn18Completed5 daysInternetCity 311
11/26/20256349 S ST LAWRENCE AVEWoodlawn20Completed5 daysMobile DeviceCity 311
6/25/20261812 S RIDGEWAY AVENorth Lawndale24Completed5 daysInternetCity 311
7/3/20263811 W 46TH STArcher Heights14Completed5 daysPhone CallCity 311
7/15/20265200 S KILBOURN AVEArcher Heights23Completed5 daysAlderman's OfficeCity 311
10/17/20251850 S THROOP STLower West Side25Completed5 daysInternetCity 311
5/27/20264602 S WASHTENAW AVEBrighton Park12Completed5 daysInternetCity 311
4/30/20265134 N MONTCLARE AVENorwood Park41Completed5 daysMobile DeviceCity 311
8/8/20255000 S PRAIRIE AVEGrand Boulevard3Completed5 daysPhone CallCity 311
10/24/20255835 S MELVINA AVEGarfield Ridge13Completed5 daysInternetCity 311
5/14/20263746 W 79TH PLAshburn18Completed5 daysMobile DeviceCity 311
5/22/20262534 W 83RD STAshburn18Completed5 daysAlderman's OfficeCity 311
5/22/20262444 W 83RD STAshburn18Completed5 daysAlderman's OfficeCity 311
10/22/20256455 S NORMANDY AVEClearing13Completed5 daysInternetCity 311
10/16/20254130 W NELSON STAvondale31Completed5 daysPhone CallCity 311
10/29/20263900 W DIVISION STHumboldt Park37Completed5 daysPhone CallCity 311
9/4/20265745 S PRINCETON AVEEnglewood20Completed5 daysPhone CallCity 311
8/5/20266810 S MICHIGAN AVEGreater Grand Crossing6Completed5 daysPhone CallCity 311
6/18/20266029 N JERSEY AVENorth Park50Completed5 daysPhone CallCity 311
7/26/20262120 N TRIPP AVEHermosa35Completed5 daysPhone CallCity 311
7/10/20263748 N SPAULDING AVEIrving Park33Completed5 daysMobile DeviceCity 311
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