RatCity — Chicago Rat and Rodent Sightings Map

RatCity

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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

59,088 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
10/12/20267440 S CHAMPLAIN AVEGreater Grand Crossing6Completed11 daysInternetCity 311
10/12/20262037 W BIRCHWOOD AVERogers Park49Completed1 dayInternetCity 311
10/12/20267011 W 64TH STClearing13Completed15 daysMobile DeviceCity 311
10/12/20266435 N WAYNE AVERogers Park49Completed11 daysPhone CallCity 311
10/12/20266550 S ABERDEEN STEnglewood16Completed9 daysPhone CallCity 311
10/12/20262534 S DRAKE AVESouth Lawndale22Completed11 daysPhone CallCity 311
10/12/20265815 W HIGGINS AVEJefferson Park45Completed16 daysInternetCity 311
10/12/20261100 N LAWLER AVEAustin37Completed15 daysPhone CallCity 311
10/12/2026738 N SPRINGFIELD AVEHumboldt Park37Completed15 daysPhone CallCity 311
10/12/20265510 W BERTEAU AVEPortage Park38Completed16 daysMobile DeviceCity 311
10/12/20261750 N SPAULDING AVEHumboldt Park26Completed10 daysInternetCity 311
10/12/20262035 W GREENLEAF AVERogers Park49Completed11 daysPhone CallCity 311
10/12/20264024 W 26TH STSouth Lawndale22Completed11 daysInternetCity 311
10/12/20265355 N BERNARD STNorth Park39Completed10 daysInternetCity 311
10/12/2026531 N LAWLER AVEAustin37Completed9 daysInternetCity 311
10/12/20266949 W 63RD STClearing13Completed15 daysMobile DeviceCity 311
10/12/20269020 S HARPER AVECalumet Heights8Completed7 daysPhone CallCity 311
10/12/20263416 N KOLMAR AVEIrving Park30Completed14 daysInternetCity 311
10/12/20263432 N KOLMAR AVEIrving Park30Completed14 daysInternetCity 311
10/12/2026562 W ARLINGTON PLLincoln Park43Completed15 daysMobile DeviceCity 311
10/12/20265246 W BERTEAU AVEPortage Park38Completed16 daysMobile DeviceCity 311
10/12/2026618 S KARLOV AVEWest Garfield Park24Completed15 daysMobile DeviceCity 311
10/12/2026828 W WAVELAND AVELake View46Completed7 daysMobile DeviceCity 311
10/12/20263307 W 59TH PLChicago Lawn14Completed15 daysPhone CallCity 311
10/12/20262920 W RASCHER AVELincoln Square39Completed14 daysPhone CallCity 311
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