Thanks for helping your Realtor, John Williams, sell the most expensive ($1,590,000) home sold in the entire zip code of 20878 (North Potomac) since July 2, 2015. The average Sold Price for the month of March 2016 in the zipcode $534,077 & Median Sold Price $555,000. The Sold price is 3x the average home sale price in the zipcode. The home was sold in 15 days.