Belmar, NE has a population of 144 and is the 25,791st largest city in the United States. The population density is 31 per sq mi which is 31% higher than the Nebraska average and 65% lower than the national average. The median age in Belmar is 64 which is approximately 75% higher than the Nebraska average of 36. In Belmar, 56% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 52% of Belmar residents were born in Nebraska, 48% were born out of state, 0% were born outside of the United States and 0% were foreign born.