RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4606 locations in the last 30 days (4777 reports) · Last sighting 11 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

52,821 reports match your filters.

DateAddressNeighborhoodWardStatusResponse timeReported viaSource
9/17/20263835 N FREMONT STLake View46Open—InternetCity 311
9/21/2026865 W CORNELIA AVELake View44Open—Mobile DeviceCity 311
9/19/20264030 N MENARD AVEPortage Park38Open—Mobile DeviceCity 311
9/21/20261524 W 110TH STMorgan Park21Open—Mobile DeviceCity 311
9/17/20265600 S KARLOV AVEWest Elsdon13Open—Phone CallCity 311
9/13/202611218 S KEDZIE AVEMount Greenwood19Open—InternetCity 311
9/16/20266943 W DIVERSEY AVEMontclare36Open—Mobile DeviceCity 311
9/16/20265805 S RICHMOND STGage Park15Open—Alderman's OfficeCity 311
9/21/20261301 W ADDISON STLake View44Open—InternetCity 311
9/18/2026920 N TRUMBULL AVEHumboldt Park27Open—Phone CallCity 311
9/18/20261813 S CLARK STNear South Side3Open—InternetCity 311
9/19/202611434 S FOREST AVERoseland9Open—InternetCity 311
9/17/20263636 W FLOURNOY STEast Garfield Park24Open—Phone CallCity 311
9/17/20265902 W GRACE STPortage Park38Open—InternetCity 311
9/17/20269859 S COMMERCIAL AVESouth Deering10Open—Alderman's OfficeCity 311
9/17/20265239 S MOZART STGage Park14Open—Alderman's OfficeCity 311
9/20/20261958 N BURLING STLincoln Park43Open—Mobile DeviceCity 311
9/17/2026318 W 27TH STArmour Square11Open—InternetCity 311
9/16/20266504 S LOWE AVEEnglewood6Open—Phone CallCity 311
9/18/20268153 S PRAIRIE AVEChatham6Open—Phone CallCity 311
9/17/20266501 S KEELER AVEWest Lawn13Open—InternetCity 311
9/16/20261511 N KEYSTONE AVEHumboldt Park26Open—Mobile DeviceCity 311
9/13/20264130 N OAKLEY AVENorth Center47Open—InternetCity 311
9/17/20264500 S AVERS AVEArcher Heights14Open—Mobile DeviceCity 311
9/22/20265555 W KAMERLINGAustin37Open—Salesforce Mobile AppCity 311
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