Today upper merion area, King Of Prussia PA is count around 66 homes for sale at current average listing price of $604,459. Nearby neighborhoods of upper merion area are None Available, Stonebrook At Upper Merion, River Trail At Valley Forge, Valley Forge Tower, 575 South Condos, River Pionte, River Pointe, Acorn Hill, Belmont Hills, Brandywine Vil. Most of upper merion area homes are 3 bedrooms with 2 bathrooms.