Grannis, AR has a population of 707 and is the 17,416th largest city in the United States. The population density is 89 per sq mi which is 61% higher than the Arkansas average and 2% lower than the national average. The median age in Grannis is 46 which is approximately 22% higher than the Arkansas average of 38. In Grannis, 58% of the population over 15 years of age are married, 82% speak English and 18% speak Spanish. 41% of Grannis residents were born in Arkansas, 41% were born out of state, 1% were born outside of the United States and 17% were foreign born.