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

57,594 reports match your filters.

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
2/26/2026	4954 W SUPERIOR ST	Austin	37	Completed	1 day	Mobile Device	City 311
9/9/2025	1253 N LAVERGNE AVE	Austin	37	Completed	8 days	Alderman's Office	City 311
4/7/2026	4840 W AUGUSTA BLVD	Austin	37	Completed	1 day	Phone Call	City 311
8/28/2026	3900 W DIVISION ST	Humboldt Park	37	Completed	13 days	Phone Call	City 311
2/25/2026	5008 W WABANSIA AVE	Austin	37	Completed	1 day	Phone Call	City 311
4/8/2026	1037 N SPRINGFIELD AVE	Humboldt Park	37	Completed	2 days	Mobile Device	City 311
10/2/2026	4326 W THOMAS ST	Humboldt Park	37	Completed	14 days	Mobile Device	City 311
10/3/2026	1730 N LOREL AVE	Austin	37	Completed	13 days	Mobile Device	City 311
9/11/2025	607 N LONG AVE	Austin	37	Completed	11 days	Phone Call	City 311
9/16/2025	4932 W CORTEZ ST	Austin	37	Completed	9 days	Phone Call	City 311
10/21/2025	1133 N LECLAIRE AVE	Austin	37	Completed	6 days	Phone Call	City 311
11/25/2025	5005 W BLOOMINGDALE AVE	Austin	37	Completed	3 days	Phone Call	City 311
11/5/2025	41 N LOTUS AVE	Austin	37	Completed	2 days	Internet	City 311
11/5/2025	852 N KEYSTONE AVE	Humboldt Park	37	Completed	2 days	Phone Call	City 311
3/11/2026	4002 W CHICAGO AVE	Humboldt Park	37	Completed	1 day	Internet	City 311
10/16/2026	5421 W THOMAS ST	Austin	37	Open	—	Phone Call	City 311
4/5/2026	1830 N LOTUS AVE	Austin	37	Completed	1 day	Phone Call	City 311
9/8/2025	547 N HARDING AVE	Humboldt Park	37	Completed	9 days	Phone Call	City 311
10/27/2025	1039 N LARAMIE AVE	Austin	37	Completed	2 days	Phone Call	City 311
10/17/2026	4314 W AUGUSTA BLVD	Humboldt Park	37	Open	—	Internet	City 311
11/3/2025	5501 W AUGUSTA BLVD	Austin	37	Completed	3 days	Alderman's Office	City 311
3/16/2026	4946 W SUPERIOR ST	Austin	37	Completed	2 days	Phone Call	City 311
4/8/2026	5005 W CHICAGO AVE	Austin	37	Completed	2 days	Phone Call	City 311
10/19/2026	644 N LARAMIE AVE	Austin	37	Open	—	Internet	City 311
9/15/2025	818 N LECLAIRE AVE	Austin	37	Completed	10 days	Alderman's Office	City 311

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