RatCity — Chicago Rat and Rodent Sightings Map

RatCity

42969 locations in the last year (44098 reports) · Last sighting 2 days 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
10/8/20262223 S TROY STSouth Lawndale24Completed8 daysInternetCity 311
10/8/20262227 S TROY STSouth Lawndale24Completed8 daysInternetCity 311
10/8/20262225 S TROY STSouth Lawndale24Completed8 daysInternetCity 311
10/8/2026323 W EVERGREEN AVENear North Side2Completed12 daysInternetCity 311
10/8/20263119 N NEENAH AVEBelmont Cragin36Completed14 daysInternetCity 311
10/8/202610941 S ST LOUIS AVEMount Greenwood19Completed7 daysMobile DeviceCity 311
10/8/20262953 N LONG AVEBelmont Cragin31Completed14 daysPhone CallCity 311
10/8/20267841 S MARSHFIELD AVEAuburn Gresham17Completed11 daysPhone CallCity 311
10/7/20261027 N PAULINA STWest Town1Completed14 daysMobile DeviceCity 311
10/7/20261000 N PAULINA STWest Town1Completed14 daysMobile DeviceCity 311
10/7/20261920 S LAFLIN STLower West Side25Completed13 daysMobile DeviceCity 311
10/7/20261719 S DESPLAINES STLower West Side25Completed14 daysMobile DeviceCity 311
10/7/20261914 S LAFLIN STLower West Side25Completed13 daysMobile DeviceCity 311
10/7/20263116 N NATCHEZ AVEBelmont Cragin36Completed14 daysInternetCity 311
10/7/20263524W W DICKENS AVELogan Square35Completed12 daysMobile DeviceCity 311
10/7/20262236 W OAKDALE AVENorth Center32Completed9 daysInternetCity 311
10/7/20262238 W OAKDALE AVENorth Center32Completed9 daysInternetCity 311
10/7/20265300 S KILBOURN AVEArcher Heights23Completed15 daysMobile DeviceCity 311
10/7/2026735 W DIVISION STNear North Side27Completed12 daysPhone CallCity 311
10/7/20261248 W ALBION AVERogers Park49Completed14 daysInternetCity 311
10/7/20262541 S ALBANY AVESouth Lawndale25Completed13 daysInternetCity 311
10/7/20264363 S LAKE PARK AVEKenwood4Completed6 daysInternetCity 311
10/7/20261035 E 45TH STKenwood4Completed6 daysInternetCity 311
10/7/20264744 N MAPLEWOOD AVELincoln Square40Completed15 daysInternetCity 311
10/7/20264744 N CAMPBELL AVELincoln Square40Completed14 daysInternetCity 311
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