Today upper merion, King Of Prussia PA is count around 27 homes for sale at current average listing price of $645,693. Nearby neighborhoods of upper merion are None Available, River Trail At Valley Forge, Stonebrook At Upper Merion, Valley Forge Tower, Acorn Hill, Brownstones At Vf, Candle Brook, Cinnamon Hill, King Manor, King Of Prussia. Most of upper merion homes are 3 bedrooms with 2 bathrooms.