Mercer Island Police Department

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Mercer Island Police Department Official page for City of Mercer Island's Police Department. Dial 911 for emergency. Police Operations includes the Marine Patrol and the Patrol Section.

DISCLAIMER: If you are experiencing an emergency, immediately DIAL 911 to report your emergency. This Facebook site is NOT monitored 24/7, and is NOT used for the reporting or dispatching of the Mercer Island Police Department and/or Fire Department services. TERMS OF USE: Click www.mercergov.org/Page.asp?NavID=2966
for full guidelines on using this page. BACKGROUND:
The Mercer Island Police Department strives to provide a full range of police services while respecting individual rights and freedoms. We provide a wide range of services to the people who live and work on Mercer Island. Information about our services are readily available through this page and on the City of Mercer Island's website at www.mercergov.org

The Police Department is divided into the Police Operations unit and the Administrative Services unit. Administrative Services includes the Criminal Investigations Section (Detectives), the Services Section (Dispatch, Records, and Evidence Room), and a Training and Personnel Sergeant. The following are some of the services provided:

Proactive/Routine patrol, including the enforcement of criminal and traffic law

Answering calls for service and taking appropriate police action

Follow-up investigations of criminal cases

Bicycle patrol of Mercer Island special events, the Central Business District, Mercer Island parks, and the I-90 right of way

Marine Patrol in the waters of Mercer Island, Renton, and Bellevue

Community Oriented Policing (COP) and Emergency Preparedness programs

Dive Team and water rescue operations/services

Special Operations Team (SOT) that handles high risk operations/situations

October is Domestic Violence Awareness Month on Mercer IslandThe Mercer Island City Council has officially proclaimed Oc...
10/25/2026

October is Domestic Violence Awareness Month on Mercer Island

The Mercer Island City Council has officially proclaimed October 2026 as Domestic Violence Awareness Month. Under this year’s theme, “With Survivors, Always,” the City of Mercer Island stands in solidarity with survivors and reaffirms its commitment to fostering a safe, supportive community where survivors are heard, believed, and empowered. Read the full proclamation: https://library.municode.com/wa/mercer_island/munidocs/munidocs?nodeId=98d3b385e01ba

Domestic violence impacts people of all backgrounds, but no one on Mercer Island has to navigate it alone. The City’s Youth and Family Services (YFS) supports survivors and their families with education, prevention, and confidential intervention and referral services. Learn more about YFS services: https://www.mercerisland.gov/yfs

If you or someone you know needs support, connect with YFS via its Confidential Voicemail Line at (206) 275-7657 or [email protected]

It’s the season for wind, heavy rain, and falling leaves that can clog storm drains and lead to localized flooding and s...
10/24/2026

It’s the season for wind, heavy rain, and falling leaves that can clog storm drains and lead to localized flooding and standing water on roadways. High winds can also cause rain-soaked branches to fall. Keep an eye out for hazards like dangling tree limbs or other debris when walking, biking, and driving.

The City of Mercer Island's Public Works crews closely monitor the weather and respond to flooded roadways and other maintenance needs. Report issues online using MI-Connect, which is the best and most efficient way to initiate a response (and you can track progress): https://www.mercerisland.gov/publicworks/page/submit-service-request

Islanders are encouraged to help by clearing leaves and debris from storm drains in their neighborhoods, if it's safe to do so.

UPDATE: WSDOT has delayed the start of this project to Wednesday, Oct. 28. 🚨 TRAFFIC ADVISORY: WSDOT I-90 Eastbound Merc...
10/22/2026

UPDATE: WSDOT has delayed the start of this project to Wednesday, Oct. 28.

🚨 TRAFFIC ADVISORY: WSDOT I-90 Eastbound Mercer Slough Bridge Work Begins Sunday, Oct. 25

Starting Sunday night, Oct. 25, WSDOT will begin at least two weeks of overnight lane and ramp closures on I-90 Eastbound. This initial phase will run Sunday through Thursday nights through Friday morning, Nov. 6, to rehabilitate the eastbound highway bridge over Mercer Slough. Due to scheduling adjustments, work is expected to continue through November and mid-December before pausing for the holidays, with overall construction lasting through June 2027.

🛑 Travelers can expect nighttime (9PM – 5AM, Sun–Thu) lane and ramp closures along the I-90 EB corridor between Mercer Island and Bellevue, including:

- East Mercer Way on-ramp to I-90 EB
- I-90 EB off-ramp to East Mercer Way
- I-90 EB ramps to northbound and southbound I-405
- Mainline I-90 EB (select lanes)

NOTE: Closures will not all happen at the same times.

Learn more about additional lane/ramp closures in Bellevue: https://wsdot.wa.gov/construction-planning/search-projects/i-90-eb-mercer-slough-bridge-rehabilitation

Signed detour routes will guide drivers around all nightly ramp closures. Expect potential travel delays through the work zone during overnight hours and plan ahead if traveling eastbound at night!

Check WSDOT's Real-Time Travel Map before heading out: https://wsdot.com/Travel/Real-time/Map/

🕵️‍♂️ October is Crime Prevention Month, and the Mercer Island Police Department wants to help you prevent identity thef...
10/22/2026

🕵️‍♂️ October is Crime Prevention Month, and the Mercer Island Police Department wants to help you prevent identity theft! 🛡️ A few smart digital habits can keep you safe from online scams and protect your financial and personal security:

🔑 Use strong & unique passwords: Never reuse passwords across accounts.

🔐 Enable Multi-Factor Authentication (MFA): Add an extra layer of security to your email, banking, and social media accounts.

🎣 Watch for phishing: Be suspicious of unexpected emails, texts, or DMs asking for personal info, passwords, etc.

🌐 Check the URL: Before entering login or payment info online, verify that the website address is legitimate.

📄 Shred sensitive documents: Securely destroy physical mail, bank statements, and pre-approved credit offers before throwing them out.

🔗 Get more crime prevention tips on the MIPD website: https://www.mercerisland.gov/police/page/do-it-yourself-crime-prevention

MEETING NOTICE: The Parks and Recreation Commission and the Open Space Conservancy Trust will host a joint special meet...
10/17/2026

MEETING NOTICE: The Parks and Recreation Commission and the Open Space Conservancy Trust will host a joint special meeting to receive the findings from the Summer 2026 E-Bikes in Parks, Trails, and Open Spaces Outreach Campaign. It will take place on Thursday, Oct. 29, at 5 p.m. at the Mercer Island Community and Event Center and will be broadcast online via the City of Mercer Island’s YouTube channel. More info: https://www.mercerisland.gov/bc-openspaceconservancytrust/page/open-space-conservancy-trust-board-and-parks-recreation-3

This campaign, which ran from May to August, engaged directly with the community via in-person events and an online survey that collected 740 responses. To provide public comment during the meeting, register via email ([email protected]) or by calling (206) 275-7796 before 4 p.m. on the day of the meeting.

October is Crime Prevention Month, which is a great time to remind the community to be aware of scam calls, texts, and e...
10/16/2026

October is Crime Prevention Month, which is a great time to remind the community to be aware of scam calls, texts, and email.

Scammers can get creative in going after your hard-earned money, so it's important to remain vigilant to keep from becoming a victim. They may call, text, or email pretending to be your bank, a government agency, or even someone you know. Caller ID can be faked, and urgent demands are a warning sign.

If a message asks for money, account information, passwords, or a verification code, immediately stop and do not click or respond. Don’t use a link or phone number in the message. Contact the person or organization using a number or website you find independently. Be especially cautious of demands for payment by gift card, cryptocurrency, or wire transfer. You can hang up and check the claim before taking action.

Get more crime prevention tips: https://www.mercerisland.gov/police/page/do-it-yourself-crime-prevention

Want to talk directly with officers about crime prevention? Attend the upcoming Coffee with a Cop event this Sunday, Oct. 18, from 10 a.m. to 12 p.m. at the South End Starbucks, where MIPD officers will be on hand to answer your questions.

Attention Mercer Island Link Light Rail riders!If you plan to ride the 2 Line this weekend, please budget extra travel t...
10/15/2026

Attention Mercer Island Link Light Rail riders!

If you plan to ride the 2 Line this weekend, please budget extra travel time!

Sound Transit will close the Crosslake Connection on Saturday, Oct. 17, and Sunday, Oct. 18, for planned maintenance. To ensure you get to your destination, shuttle buses will replace 2 Line trains between South Bellevue and International District/Chinatown stations. Buses heading toward Seattle and Bellevue/Redmond will stop outside of Mercer Island Station.

Learn more: https://www.soundtransit.org/get-to-know-us/news-events/news-releases/reminder-crosslake-connection-closed-oct-17-18

☕ Coffee with a Cop is back!Stop by the South End Starbucks this Sunday, Oct. 18, between 10:00 AM and 12:00 PM for a ca...
10/14/2026

☕ Coffee with a Cop is back!

Stop by the South End Starbucks this Sunday, Oct. 18, between 10:00 AM and 12:00 PM for a casual chat with members of the Mercer Island Police Department.

It's a great opportunity to ask questions, share local concerns, get helpful crime prevention tips, or simply get to know the officers who serve our island community over a warm cup of coffee.

We hope to see you there! More info: https://www.mercerisland.gov/police/page/coffee-cop-5

REMINDER: Traffic will be impacted along Gallagher Hill Road beginning today due to construction to replace a key sectio...
10/12/2026

REMINDER: Traffic will be impacted along Gallagher Hill Road beginning today due to construction to replace a key section of the Island’s main water pipeline.

For the first few weeks of work, traffic will be reduced to one uphill (southbound) lane on Gallagher Hill Road, while two-way traffic will remain open on SE 36th Street. Signed detours will direct drivers heading eastbound down Mercerwood Drive.

Beginning in early November, the downhill lane of Gallagher Hill Road will close from SE 40th St to 93rd Ave SE.

Roadway impacts are expected to last up to six months.

The City and Mercer Island School District are coordinating to keep travel safe during construction. Expect heavier traffic along SE 40th Street and Mercerwood Drive during school drop-off and pick-up. Drivers should allow extra time and watch for students. Students should continue using marked crosswalks. School buses will continue running, though schedules may be adjusted.

More info: https://letstalk.mercergov.org/water-supply-line-replacement

With October being Crime Prevention Month, the Mercer Island Police Department would like to share tips throughout the m...
10/08/2026

With October being Crime Prevention Month, the Mercer Island Police Department would like to share tips throughout the month to help protect you and your property.

This week, the focus is on preventing vehicle prowls. These crimes can happen at any time, and at any place. Lock your vehicle and close the windows every time you park, even for a quick stop. Take bags, electronics, garage door openers, spare keys, and personal documents with you.

If you need to leave something in your vehicle, place it in the trunk, glove box, or other area that is out of sight before you arrive at your destination. When possible, park in a well-lit area. Get more tips on MIPD's Crime Prevention webpage: https://www.mercerisland.gov/police/page/do-it-yourself-crime-prevention

Address

9611 SE 36th Street
Mercer Island, WA
98040

Telephone

+12062757610

Website

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