RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4254 locations in the last 30 days (4443 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.

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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
6/5/20262910 N NATOMA AVEMontclare36Completed3 daysPhone CallCity 311
6/6/20263318 N HAMILTON AVENorth Center32Completed3 daysMobile DeviceCity 311
6/5/20263140 N RUTHERFORD AVEMontclare36Completed3 daysPhone CallCity 311
7/6/20262028 W CORTLAND STLogan Square32Completed3 daysMobile DeviceCity 311
4/14/20262957 N RIDGEWAY AVEAvondale35Completed3 daysPhone CallCity 311
6/19/20261215 W MONTANA STLincoln Park32Completed3 daysInternetCity 311
5/26/20262300 E 75TH STSouth Shore7Completed3 daysInternetCity 311
4/17/20261630 N LASALLE DRLincoln Park2Completed3 daysPhone CallCity 311
5/17/20263311 W DICKENS AVELogan Square26Completed3 daysMobile DeviceCity 311
6/12/20263937 N MOZART STIrving Park35Completed3 daysPhone CallCity 311
6/1/20265838 N JERSEY AVENorth Park39Completed3 daysPhone CallCity 311
10/16/20268030 S MARQUETTE AVESouth Chicago7Completed3 daysPhone CallCity 311
6/5/20264619 S CHRISTIANA AVEBrighton Park12Completed3 daysInternetCity 311
3/9/20264437 N BROADWAYUptown46Completed3 daysMobile DeviceCity 311
8/22/20251518 N TRIPP AVEHumboldt Park36Completed3 daysPhone CallCity 311
9/25/202612119 S EMERALD AVEWest Pullman21Completed3 daysPhone CallCity 311
3/20/20266327 N LAKEWOOD AVEEdgewater48Completed3 daysMobile DeviceCity 311
1/30/2026628 S KOSTNER AVEWest Garfield Park24Completed3 daysPhone CallCity 311
10/28/20255134 W HENDERSON STPortage Park31Completed3 daysMobile DeviceCity 311
8/10/20261934 S RACINE AVELower West Side25Completed3 daysPhone CallCity 311
12/19/202512332 S LAFAYETTE AVEWest Pullman9Completed3 daysMobile DeviceCity 311
2/28/20262755 N NEWCASTLE AVEMontclare36Completed3 daysMobile DeviceCity 311
9/21/20257253 S EMERALD AVEEnglewood6Completed3 daysInternetCity 311
3/13/20264842 W STRONG STForest Glen45Completed3 daysMobile DeviceCity 311
8/25/20252653 S KARLOV AVESouth Lawndale22Completed3 daysAlderman's OfficeCity 311
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