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Newly renovated homes now available! View apartments
Studio - 2 Bedrooms Starting at $1,924

Life Connected on Mercer Island

Island Square presents vibrant studio, one, and two-bedroom apartment homes for rent in the highly desirable Mercer Island location. Our updated homes feature Swiss elm cabinetry, quartz countertops, brushed nickel fixtures, stainless steel appliances, and wood plank flooring. Each uniquely designed floor plan offers modern, energy-efficient appliances and large windows, providing a bright and welcoming atmosphere. Residents can enjoy a state-of-the-art 24-hour fitness center and look forward to our upcoming new clubhouse, which will include a conference room, co-working space with booths, lounge seating, and a podcast room.  With close proximity to the Light Rail, commuting is a breeze. Experience the best of Mercer Island's restaurants, shops, and outdoor recreation just steps from your door.
Discover your next apartment home at Island Square.

Discover vibrant studio, 1- and 2-bedroom apartments for rent at Island Square. Enjoy essential amenities like a 24-hour fitness center. Each floor plan features modern appliances and large windows. Experience Mercer Island's best right at your doorstep. Find your next apartment home at Island Square.

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Save 4 weeks off rent! Applies to first full month's rent only. Minimum 12 month lease term required. *Select apartments

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New Premium Interiors

At Island Square, each studio, one-, and two-bedroom apartment home was designed with you in mind. Updated interiors feature swiss elm cabinetry, white quartz countertops, stainless steel appliances, and wood plank flooring.

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Outdoor Terrace

Our professionally landscaped terrace is truly unique. Unlike most apartment communities, our residents can experience the quiet serenity of our terrace on the second floor of our community year-round. Natural solitude is never too far away at Island Square.

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Convenient Living in Mercer Island

Experience convenient daily living in Mercer Island. Located between Bellevue and Seattle, enjoy easy access to both city centers as well as close proximity to local shops, restaurants, and an abundance of outdoor recreation areas.

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Convenient Living in Mercer Island

Experience convenient daily living in Mercer Island. Located between Bellevue and Seattle, enjoy easy access to both city centers as well as close proximity to local shops, restaurants, and an abundance of outdoor recreation areas.

Explore the Neighborhood
2758 78th Ave SE,
Mercer Island, WA 98040

Recent Reviews

69 Reviews
Bev J.
Bev J.
5/20/2025

We are downsizing and have moved into a newly remodeled apartment on the fourth floor of Island Square Apartments. Chrystle and Alexa have been very...

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Recent Reviews

4.1 146 Reviews
Google User
Virginia B
a month ago

Island Square is a great place to live! I am a single woman who appreciates the security and convenience of Island Square. I have lived here many years and would recommend this apartment to anyone. The apartments are well appointed, very quiet and bright. The management staff are a delight to work with and are always professional yet friendly. Chrystle is especi...

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