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

55,375 reports match your filters.

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
8/30/2025	1756 N CLYBOURN AVE	Lincoln Park	2	Completed	11 days	Mobile Device	City 311
12/28/2025	2741 N MARSHFIELD AVE	Lincoln Park	32	Completed	1 day	Internet	City 311
8/20/2025	2127 N SEMINARY AVE	Lincoln Park	43	Completed	14 days	Internet	City 311
5/5/2026	2037 N CLEVELAND AVE	Lincoln Park	43	Completed	1 day	Mobile Device	City 311
8/21/2025	2221 N KENMORE AVE	Lincoln Park	43	Completed	13 days	Phone Call	City 311
8/28/2025	2254 N RACINE AVE	Lincoln Park	2	Completed	13 days	Mobile Device	City 311
8/20/2025	1055 W BELDEN AVE	Lincoln Park	43	Completed	14 days	Phone Call	City 311
8/20/2025	1055 W BELDEN AVE	Lincoln Park	43	Completed	14 days	Phone Call	City 311
10/5/2025	2015 N BISSELL ST	Lincoln Park	43	Completed	9 days	Internet	City 311
10/6/2025	2679 N LINCOLN AVE	Lincoln Park	43	Completed	8 days	Internet	City 311
10/2/2025	2248 N KENMORE AVE	Lincoln Park	43	Completed	6 days	Mobile Device	City 311
10/7/2025	2001 N ORCHARD ST	Lincoln Park	43	Completed	7 days	Phone Call	City 311
5/5/2026	2509 N HALSTED ST	Lincoln Park	43	Completed	1 day	Internet	City 311
10/1/2025	500 W FULLERTON PKWY	Lincoln Park	43	Completed	7 days	Internet	City 311
10/7/2025	2208 N BURLING ST	Lincoln Park	43	Completed	7 days	Phone Call	City 311
10/7/2025	2214 N BURLING ST	Lincoln Park	43	Completed	7 days	Internet	City 311
10/1/2025	1035 W BELDEN AVE	Lincoln Park	43	Completed	7 days	Internet	City 311
10/1/2025	1125 W MONTANA ST	Lincoln Park	43	Completed	7 days	Alderman's Office	City 311
10/2/2025	2616 N LAKEWOOD AVE	Lincoln Park	32	Completed	6 days	Phone Call	City 311
9/30/2025	2243 N LINCOLN AVE	Lincoln Park	43	Completed	8 days	Mobile Device	City 311
7/9/2026	1226 W MONTANA ST	Lincoln Park	32	Completed	11 days	Mobile Device	City 311
10/7/2025	1630 N DAYTON ST	Lincoln Park	43	Completed	7 days	Internet	City 311
9/30/2025	1948 N MOHAWK ST	Lincoln Park	43	Completed	8 days	Mobile Device	City 311
7/10/2026	1405 W DIVERSEY PKWY	Lincoln Park	32	Completed	10 days	Internet	City 311
9/30/2025	2015 N KENMORE AVE	Lincoln Park	43	Completed	8 days	Internet	City 311

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