RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4229 locations in the last 30 days (4413 reports) · Last sighting 17 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

59,712 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
4/27/20263382 S ARCHER AVEMcKinley Park12Completed1 dayInternetCity 311
4/27/20263378 S ARCHER AVEMcKinley Park12Completed1 dayInternetCity 311
4/27/20263368 S ARCHER AVEMcKinley Park12Completed1 dayInternetCity 311
4/27/20262750 N TROY STLogan Square35Completed1 dayMobile DeviceCity 311
4/27/20264864 N MASON AVEJefferson Park45Completed3 daysInternetCity 311
4/27/20264562 N MELVINA AVEPortage Park38Completed1 dayPhone CallCity 311
4/27/20261702 S JEFFERSON STLower West Side25Completed1 dayInternetCity 311
4/27/20263044 W THORNDALE AVEWest Ridge50Completed1 dayPhone CallCity 311
4/27/20264120 W 55TH STWest Elsdon23Completed1 dayPhone CallCity 311
4/27/20267516 S SANGAMON STAuburn Gresham17Completed2 daysPhone CallCity 311
4/27/20268258 S JUSTINE STAuburn Gresham17Completed2 daysInternetCity 311
4/27/20262638 W CARMEN AVELincoln Square40Completed2 daysMobile DeviceCity 311
4/27/20265043 S LAWLER AVEGarfield Ridge23Completed0 daysMobile DeviceCity 311
4/26/20262040 W BIRCHWOOD AVERogers Park49Completed1 dayMobile DeviceCity 311
4/26/20264415 N FRANCISCO AVEAlbany Park33Completed4 daysMobile DeviceCity 311
4/26/20264134 N MANGO AVEPortage Park38Completed3 daysMobile DeviceCity 311
4/26/20262846 W MONTROSE AVEAlbany Park33Completed4 daysMobile DeviceCity 311
4/26/20261723 N FREMONT STLincoln Park43Completed0 daysInternetCity 311
4/26/20264128 W SCHOOL STIrving Park30Completed1 dayMobile DeviceCity 311
4/26/20261037 N SPRINGFIELD AVEHumboldt Park37Completed0 daysMobile DeviceCity 311
4/26/20263561 W MEDILL AVELogan Square35Completed1 dayInternetCity 311
4/26/20263107 W LELAND AVEAlbany Park33Completed3 daysInternetCity 311
4/26/20264530 N PAULINA STUptown47Completed3 daysInternetCity 311
4/26/20264047 W FULLERTON AVEHermosa35Completed1 dayMobile DeviceCity 311
4/26/20261320 W 18TH STLower West Side25Completed1 dayInternetCity 311
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