 Other historical features such as Civil War battlefields, log cabins, one-room school houses, community centers, and museums describe the history and culture of Washington County.Washington County occupies 951.72 square miles (243,220 ha) and contained a population of 203,065 people in 76,389 households as of the 2010 Census, ranking it 4th in size and 3rd in population among the state's 75 counties.The economy is largely based on the business/management, education, sales, office/administration, and poultry production industries.