Scappoose, OR has a population of 6,901 and is the 5,233rd largest city in the United States. The population density is 2,523 per sq mi which is 6272% higher than the Oregon average and 2685% higher than the national average. The median age in Scappoose is 36 which is approximately 8% lower than the Oregon average of 39. In Scappoose, 58% of the population over 15 years of age are married, 96% speak English and 1% speak Spanish. 54% of Scappoose residents were born in Oregon, 41% were born out of state, 1% were born outside of the United States and 4% were foreign born.