RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4214 locations in the last 30 days (4402 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

58,858 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/21/20251535 E 84TH STAvalon Park8Completed3 daysInternetCity 311
4/26/20266143 W PETERSON AVENorwood Park45Completed3 daysMobile DeviceCity 311
1/30/20261727 W NEWPORT AVELake View47Completed3 daysMobile DeviceCity 311
5/11/20261410 W CORNELIA AVELake View44Completed3 daysInternetCity 311
6/1/20263050 N SOUTHPORT AVELake View32Completed3 daysPhone CallCity 311
5/11/20262424 N SOUTHPORT AVELincoln Park32Completed3 daysMobile DeviceCity 311
6/26/2026900 W WILLOW STLincoln Park43Completed3 daysMobile DeviceCity 311
5/15/20265353 N CANFIELD AVENorwood Park41Completed3 daysInternetCity 311
6/5/20264733 N KEWANEE AVEAlbany Park39Completed3 daysPhone CallCity 311
9/16/20252210 N MAGNOLIA AVELincoln Park2Completed3 daysMobile DeviceCity 311
12/5/20253059 N GRESHAM AVEAvondale35Completed3 daysMobile DeviceCity 311
5/31/20263525 N KEATING AVEPortage Park30Completed3 daysMobile DeviceCity 311
2/28/20261030 N LECLAIRE AVEAustin37Completed3 daysInternetCity 311
6/6/20262628 N SPAULDING AVELogan Square35Completed3 daysPhone CallCity 311
9/19/2026881 N MICHIGAN AVENear North Side2Completed3 daysInternetCity 311
6/28/20263343 N KEDVALE AVEIrving Park30Completed3 daysInternetCity 311
11/2/20254522 N KASSON AVEAlbany Park39Completed3 daysPhone CallCity 311
6/9/20268230 S FAIRFIELD AVEAshburn18Completed3 daysPhone CallCity 311
10/14/20253440 S HOYNE AVEMcKinley Park12Completed3 daysspot-open311-CHITEXTCity 311
8/22/20251715 N KARLOV AVEHumboldt Park26Completed3 daysPhone CallCity 311
6/27/20266617 W 59TH STClearing13Completed3 daysInternetCity 311
4/17/20262225 W ADAMS STNear West Side27Completed3 daysPhone CallCity 311
4/4/20261016 W CULLERTON STLower West Side25Completed3 daysInternetCity 311
8/26/20251359 W TAYLOR STNear West Side28Completed3 daysPhone CallCity 311
5/18/20265834 W GUNNISON STJefferson Park45Completed3 daysPhone CallCity 311
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