Loudoun County is in Northern Virginia. Of the 133 counties in the Old Dominion, Loudoun County is 21st in terms of its size (521 square miles). A recent survey of Land Network data includes almost 1,000 acres of farms for sale in Virginia's Loudoun County, which is valued at a combined $24 million. The average price of farms for sale in Loudoun County was $3 million. Farms for sale in Loudoun County hold livestock including horses, cattle, goats and sheep. Browse all Virginia farms for sale on the Land Network to find the farm, cattle operation, hobby farm or other farm property that's right for your future commercial or lifestyle needs.