Mercerdale Park is located in the heart of downtown Mercer Island. The park’s large open lawn is bordered by a paved footpath that encircles the entire site and links the parking lot to each of the amenities. Located on the south end of the park is a children’s play area. The play area offers space for tots under five and a separate area divided by a low cement sitting wall, designed for children 5 and older. The tot area features a bright red train, spring toys and bucket swings. The older children will enjoy a large climbing structure, two slides and swings. Adjacent to playground is an expanded skateboard park. On the west side of the park you will find access to trails that lead up the hillside into nearly 7 acres of natural open space. The northeast corner of the park features a picnic area and Veteran’s Plaza which features a covered pergola.

Mercerdale is home to Mercer Island Parks and Recreation’s Mostly Music in the Park, Summer Celebration, Summer Carnival, and a variety of other events and activities throughout the year.

Quick Facts:

  • 12.17 Acres
  • Skate Park
  • 6 Picnic Tables
  • Play Area
    • Tot Lot 2-5 yrs.
    • Playground 5-12 yrs.
    • Swings for all ages
  • Community Gathering Space
  • 5.66 Acres – Manicured Green Space
  • 6.15 Acres – Natural Green Space
  • Parking
  • Covered Pergola
  • Paved Pathways, benches
  • Public Art
    • “Puzzle Play” 2002




I-90 Westbound

Traveling towards Seattle, take Island Crest Way Exit #7 and turn left onto Island Crest Way. Turn right on SE 28th St and then left on 78th Ave SE. The park is at 3249 78th Ave SE.

I-90 Eastbound

Traveling towards Spokane, take Island Crest Way Exit #7B and turn right onto SE 30th St. Then turn left onto 78th Ave SE and the park is at 3249 78th Ave SE.