Jefferson, WV has a population of 822 and is the 16,418th largest city in the United States. The population density is 2,463 per sq mi which is 3116% higher than the West Virginia average and 2619% higher than the national average. The median age in Jefferson is 41 which is approximately 1% lower than the West Virginia average of 42. In Jefferson, 54% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 81% of Jefferson residents were born in West Virginia, 19% were born out of state, 0% were born outside of the United States and 0% were foreign born.