RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4391 locations in the last 30 days (4575 reports) · Last sighting 18 hours ago

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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.

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

58,313 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
11/13/20255100 W BYRON STPortage Park45Completed1 dayAlderman's OfficeCity 311
11/13/20255200 W BYRON STPortage Park30Completed1 dayAlderman's OfficeCity 311
11/13/20252520 E 96TH STSouth Deering7Completed1 dayAlderman's OfficeCity 311
11/13/20255000 W DAKIN STPortage Park45Completed1 dayAlderman's OfficeCity 311
11/13/20255100 W DAKIN STPortage Park45Completed1 dayAlderman's OfficeCity 311
11/13/20255200 W DAKIN STPortage Park45Completed1 dayAlderman's OfficeCity 311
11/13/20254921 N AVERS AVEAlbany Park39Completed1 dayInternetCity 311
11/13/20254208 N SACRAMENTO AVEIrving Park33Completed4 daysInternetCity 311
11/13/20252545 N MONITOR AVEBelmont Cragin30Completed1 dayMobile DeviceCity 311
11/13/20252653 S KARLOV AVESouth Lawndale22Completed4 daysPhone CallCity 311
11/13/20257649 S MORGAN STAuburn Gresham17Completed0 daysInternetCity 311
11/13/20255239 W ROSCOE STPortage Park31Completed1 dayMobile DeviceCity 311
11/13/20252131 N MASON AVEBelmont Cragin36Completed4 daysPhone CallCity 311
11/13/20256453 N GLENWOOD AVERogers Park49Completed1 dayPhone CallCity 311
11/13/20256750 S RACINE AVEWest Englewood17Completed5 daysInternetCity 311
11/13/20256138 N SPRINGFIELD AVENorth Park39Completed1 dayInternetCity 311
11/13/20255105 S LAMON AVEGarfield Ridge23Completed4 daysAlderman's OfficeCity 311
11/13/20251229 S AVERS AVENorth Lawndale24Completed1 dayPhone CallCity 311
11/13/20253639 W 84TH STAshburn18Completed4 daysInternetCity 311
11/13/2025143 N MASON AVEAustin29Completed1 dayInternetCity 311
11/13/202510625 S MILLARD AVEMount Greenwood19Completed1 dayPhone CallCity 311
11/13/20252802 S WENTWORTH AVEArmour Square11Completed1 dayMobile DeviceCity 311
11/13/20256718 S KEDVALE AVEWest Lawn23Completed4 daysPhone CallCity 311
11/13/202510728 S AVENUE CEast Side10Completed1 dayAlderman's OfficeCity 311
11/13/20252318 N KARLOV AVEHermosa35Completed4 daysPhone CallCity 311
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