RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4099 locations in the last 30 days (4283 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
5/12/20265700 W ADDISON STPortage Park38Completed1 dayInternetCity 311
5/12/20261647 N LA SALLE DRLincoln Park43Completed1 dayMobile DeviceCity 311
5/12/20266270 N CICERO AVEForest Glen39Completed3 daysPhone CallCity 311
5/12/202611023 S PULASKI RDMount Greenwood19Completed1 dayPhone CallCity 311
5/12/20263840 N TROY STIrving Park33Completed3 daysInternetCity 311
5/12/20264345 N MONITOR AVEPortage Park38Completed1 dayPhone CallCity 311
5/12/20266200 W WARWICK AVEDunning38Completed1 dayPhone CallCity 311
5/12/20264137 N MARMORA AVEPortage Park38Completed1 dayPhone CallCity 311
5/12/20265506 N LOTUS AVEJefferson Park45Completed3 daysInternetCity 311
5/12/20268001 S HERMITAGE AVEAuburn Gresham17Completed3 daysMobile DeviceCity 311
5/12/20268054 S HERMITAGE AVEAuburn Gresham17Completed3 daysMobile DeviceCity 311
5/12/20262009 W BELMONT AVENorth Center32Completed2 daysMobile DeviceCity 311
5/12/20261537 W PEARSON STWest Town1Completed1 dayMobile DeviceCity 311
5/12/20266314 S TRIPP AVEWest Lawn13Completed1 dayInternetCity 311
5/12/20266509 S MARSHFIELD AVEWest Englewood15Completed1 dayInternetCity 311
5/12/20266630 S LANGLEY AVEWoodlawn20Completed2 daysInternetCity 311
5/12/20263036 S NORMAL AVEBridgeport11Completed1 dayInternetCity 311
5/12/20269544 S WENTWORTH AVERoseland9Completed2 daysPhone CallCity 311
5/12/20264021 W 57TH PLWest Elsdon13Completed1 dayMobile DeviceCity 311
5/12/20265731 S PRINCETON AVEEnglewood20Completed3 daysMobile DeviceCity 311
5/11/202672 E 101ST PLRoseland9Completed2 daysInternetCity 311
5/11/20261135 N SACRAMENTO AVEWest Town26Completed3 daysInternetCity 311
5/11/20264353 W 59TH STWest Lawn13Completed2 daysInternetCity 311
5/11/20266012 S KEELER AVEWest Lawn13Completed2 daysInternetCity 311
5/11/20265317 W FLETCHER STBelmont Cragin30Completed4 daysInternetCity 311
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