Today upper merion area, King Of Prussia PA is count around 54 homes for sale at current average listing price of $623,037. Nearby neighborhoods of upper merion area are Stonebrook At Upper Merion, None Available, Valley Forge Tower, King Of Prussia, 575 South Condos, Candle Brook, Belmont Hills, River Pointe, Valley Forge Homes. Most of upper merion area homes are 3 bedrooms with 2 bathrooms.