RatCity — Chicago Rat and Rodent Sightings Map

RatCity

4485 locations in the last 30 days (4652 reports) · Last sighting yesterday

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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.

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
9/17/20269717 S PRAIRIE AVERoseland9Open—Phone CallCity 311
9/17/20266147 S WHIPPLE STChicago Lawn15Open—Phone CallCity 311
9/17/20264813 S WOODLAWN AVEKenwood4Open—InternetCity 311
9/17/20262718 W PRINDIVILLE STLogan Square1Open—Alderman's OfficeCity 311
9/17/20264575 N MELVINA AVEPortage Park38Open—InternetCity 311
9/17/20262844 W PALMER STLogan Square1Open—Alderman's OfficeCity 311
9/17/20263017 S TRUMBULL AVESouth Lawndale22Open—InternetCity 311
9/17/20264109 N DICKINSON AVEPortage Park45Open—InternetCity 311
9/17/202610101 S PERRY AVERoseland9Open—InternetCity 311
9/17/20265252 N LUDLAM AVEJefferson Park45Open—InternetCity 311
9/17/20265148 S RICHMOND STGage Park14Open—Alderman's OfficeCity 311
9/17/20264739 S SPRINGFIELD AVEArcher Heights14Open—Alderman's OfficeCity 311
9/17/20264536 S KOMENSKY AVEArcher Heights14Open—Alderman's OfficeCity 311
9/17/202610719 S RIDGEWAY AVEMount Greenwood19Open—Phone CallCity 311
9/17/20264543 S KEELER AVEArcher Heights14Open—Phone CallCity 311
9/17/20262735 W CATALPA AVELincoln Square40Open—Mobile DeviceCity 311
9/17/20265812 N MILTIMORE AVEJefferson Park45Open—InternetCity 311
9/17/20262045 W MELROSE STNorth Center32Completed4 daysInternetCity 311
9/17/20261012 W CULLERTON STLower West Side25Open—Phone CallCity 311
9/17/20266262 N LEONA AVEForest Glen39Completed5 daysMobile DeviceCity 311
9/17/20264527 N MULLIGAN AVEPortage Park38Open—Alderman's OfficeCity 311
9/17/20269859 S COMMERCIAL AVESouth Deering10Open—Alderman's OfficeCity 311
9/17/20265932 N OZANAM AVENorwood Park41Open—InternetCity 311
9/17/20263819 W 45TH STArcher Heights14Open—Mobile DeviceCity 311
9/17/20264505 S SPRINGFIELD AVEArcher Heights14Open—Mobile DeviceCity 311
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