Bowdoinham, ME has a population of 604 and is the 18,391st largest city in the United States. The population density is 170 per sq mi which is 352% higher than the Maine average and 87% higher than the national average. The median age in Bowdoinham is 45 which is approximately 3% higher than the Maine average of 44. In Bowdoinham, 61% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 67% of Bowdoinham residents were born in Maine, 29% were born out of state, 2% were born outside of the United States and 1% were foreign born.