Baker City, OR has a population of 9,757 and is the 4,010th largest city in the United States. The population density is 1,362 per sq mi which is 3340% higher than the Oregon average and 1404% higher than the national average. The median age in Baker City is 44 which is approximately 12% higher than the Oregon average of 39. In Baker City, 59% of the population over 15 years of age are married, 95% speak English and 2% speak Spanish. 55% of Baker City residents were born in Oregon, 42% were born out of state, 2% were born outside of the United States and 2% were foreign born.