Name: Chicago Rat and Rodent Sightings
Creator: 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.

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

54,983 reports match your filters.

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
9/28/2026	1773 N CLYBOURN AVE	Lincoln Park	43	Completed	9 days	Mobile Device	City 311
9/14/2026	822 W LILL AVE	Lincoln Park	43	Completed	7 days	Internet	City 311
10/1/2026	450 W ST JAMES PL	Lincoln Park	43	Open	—	Mobile Device	City 311
9/15/2026	1946 N SEMINARY AVE	Lincoln Park	43	Completed	14 days	Phone Call	City 311
8/1/2025	1847 N SEDGWICK ST	Lincoln Park	43	Completed	3 days	Phone Call	City 311
8/12/2025	2234 N CLEVELAND AVE	Lincoln Park	43	Completed	1 day	Alderman's Office	City 311
9/14/2026	2128 N SEDGWICK ST	Lincoln Park	43	Completed	15 days	Internet	City 311
9/28/2026	710 W BELDEN AVE	Lincoln Park	43	Open	—	Phone Call	City 311
9/15/2026	1958 N SEMINARY AVE	Lincoln Park	43	Completed	14 days	Phone Call	City 311
8/3/2025	424 W BELDEN AVE	Lincoln Park	43	Completed	4 days	Phone Call	City 311
9/29/2026	2748 N RACINE AVE	Lincoln Park	32	Open	—	Mobile Device	City 311
9/14/2026	1648 W WRIGHTWOOD AVE	Lincoln Park	32	Completed	14 days	Phone Call	City 311
8/14/2026	1870 N SHEFFIELD AVE	Lincoln Park	43	Completed	13 days	Internet	City 311
8/3/2025	2008 N FREMONT ST	Lincoln Park	43	Completed	4 days	Mobile Device	City 311
8/19/2026	1930 N SEMINARY AVE	Lincoln Park	43	Completed	13 days	Phone Call	City 311
7/27/2025	2044 N ORLEANS ST	Lincoln Park	43	Completed	8 days	Internet	City 311
8/27/2026	1131 W DRUMMOND PL	Lincoln Park	43	Completed	12 days	Mobile Device	City 311
8/10/2026	916 W ARMITAGE AVE	Lincoln Park	43	Completed	15 days	Internet	City 311
8/4/2025	2250 N CLEVELAND AVE	Lincoln Park	43	Completed	9 days	Phone Call	City 311
9/24/2026	2230 N GENEVA TER	Lincoln Park	43	Completed	13 days	Internet	City 311
8/19/2026	2044 N ORLEANS ST	Lincoln Park	43	Completed	13 days	Internet	City 311
9/16/2026	2434 N BURLING	Lincoln Park	43	Completed	5 days	Salesforce Mobile App	City 311
7/28/2025	505 W BELDEN AVE	Lincoln Park	43	Completed	7 days	Mobile Device	City 311
8/12/2026	1012 W ARMITAGE AVE	Lincoln Park	43	Completed	14 days	Internet	City 311
8/4/2025	2252 N CLEVELAND AVE	Lincoln Park	43	Completed	9 days	Phone Call	City 311

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