Johnson, AR has a population of 3,573 and is the 7,952nd largest city in the United States. The population density is 989 per sq mi which is 1683% higher than the Arkansas average and 992% higher than the national average. The median age in Johnson is 32 which is approximately 15% lower than the Arkansas average of 38. In Johnson, 65% of the population over 15 years of age are married, 92% speak English and 6% speak Spanish. 46% of Johnson residents were born in Arkansas, 50% were born out of state, 1% were born outside of the United States and 4% were foreign born.