Weekly Rat Trends — Oct 26–Nov 1, 2026

🐀 1,021 new reports — down 9% from the week before
👑 Lake View is Rat King with 70 reports
📈 Biggest jump: Lincoln Park, up 15 from last week
🏙️ The city took 11.2 days on average to resolve a complaint

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

58,615 reports match your filters.

NeighborhoodWardStatusZip codeFromTo

Date	Address	Neighborhood	Ward	Status	Response time	Reported via	Source
9/25/2025	110 E JACKSON DR	Loop	42	Completed	4 days	Internet	City 311
10/7/2026	525 S STATE ST	Loop	4	Completed	13 days	Mobile Device	City 311
9/23/2025	30 N COLUMBUS DR	Loop	42	Completed	6 days	Internet	City 311
10/2/2025	1130 S COLUMBUS DR	Loop	4	Completed	6 days	Internet	City 311
12/29/2025	98 S MCCORMICK PL BUSWAY	Loop	42	Completed	1 day	Internet	City 311
8/27/2025	50 E WASHINGTON ST	Loop	34	Completed	6 days	Internet	City 311
3/2/2026	155 N WACKER DR	Loop	42	Completed	1 day	Mobile Device	City 311
10/9/2025	910 S COLUMBUS DR	Loop	4	Completed	1 day	Internet	City 311
10/4/2025	110 E MONROE DR	Loop	42	Completed	2 days	Internet	City 311
9/7/2025	98 S MCCORMICK PL BUSWAY	Loop	42	Completed	2 days	Internet	City 311
10/7/2025	20 E JACKSON BLVD	Loop	34	Completed	2 days	Phone Call	City 311
8/29/2025	728 S DEARBORN ST	Loop	4	Completed	11 days	Mobile Device	City 311
10/29/2026	163 N CLARK ST	Loop	42	Open	—	Internet	City 311
10/25/2026	98 S MCCORMICK PL BUSWAY	Loop	42	Open	—	Internet	City 311
10/24/2026	345 S CLARK ST	Loop	4	Completed	5 days	Mobile Device	City 311
10/2/2025	130 E IDA B WELLS DR	Loop	42	Completed	1 day	Internet	City 311
8/19/2025	704 S DEARBORN ST	Loop	4	Completed	9 days	Mobile Device	City 311
10/2/2025	723 S WELLS ST	Loop	34	Completed	1 day	Mobile Device	City 311
10/7/2025	20 E JACKSON BLVD	Loop	34	Completed	2 days	Phone Call	City 311
10/10/2025	130 E MONROE DR	Loop	42	Completed	4 days	Internet	City 311
10/10/2025	404 S WELLS ST	Loop	34	Completed	4 days	Internet	City 311
9/30/2025	645 S FEDERAL ST	Loop	4	Completed	2 days	Internet	City 311
12/24/2025	2 N MICHIGAN AVE	Loop	34	Completed	2 days	Internet	City 311
9/4/2025	501 S COLUMBUS DR	Loop	42	Completed	4 days	Internet	City 311
3/5/2026	559 S CONGRESS PLAZA DR	Loop	42	Completed	1 day	Internet	City 311

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