Sandy, OR has a population of 10,369 and is the 3,848th largest city in the United States. The population density is 3,091 per sq mi which is 7705% higher than the Oregon average and 3311% higher than the national average. The median age in Sandy is 34 which is approximately 13% lower than the Oregon average of 39. In Sandy, 65% of the population over 15 years of age are married, 91% speak English and 5% speak Spanish. 57% of Sandy residents were born in Oregon, 36% were born out of state, 2% were born outside of the United States and 6% were foreign born.