Phenix, VA has a population of 260 and is the 23,231st largest city in the United States. The population density is 225 per sq mi which is 18% higher than the Virginia average and 149% higher than the national average. The median age in Phenix is 34 which is approximately 10% lower than the Virginia average of 38. In Phenix, 59% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 81% of Phenix residents were born in Virginia, 19% were born out of state, 0% were born outside of the United States and 0% were foreign born.