Gateway, AR has a population of 386 and is the 21,066th largest city in the United States. The population density is 59 per sq mi which is 7% higher than the Arkansas average and 35% lower than the national average. The median age in Gateway is 46 which is approximately 22% higher than the Arkansas average of 38. In Gateway, 60% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 49% of Gateway residents were born in Arkansas, 48% were born out of state, 0% were born outside of the United States and 2% were foreign born.