Martinsburg is a city in and the county seat of Berkeley County, West Virginia, United States, in the tip of the state’s Eastern Panhandle region in the upper Shenandoah Valley. Its population was 17,465 in the 2018 census estimate, making it the largest city in the Eastern Panhandle and the eighth-largest municipality in the state. Martinsburg is part of the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area.
As of the census of 2010, there were 17,227 people, 7,293 households, and 4,106 families residing in the city. The population density was 2,590.5 inhabitants per square mile (1,000.2/km). There were 8,408 housing units at an average density of 1,264.4 per square mile (488.2/km). The racial makeup of the city was 77.5% White, 14.9% African American, 0.4% Native American, 1.2% Asian, 0.1% Pacific Islander, 2.3% from other races, and 3.7% from two or more races. Hispanic or Latino of any race were 6.2% of the population.
There were 7,293 households of which 29.6% had children under the age of 18 living with them, 35.3% were married couples living together, 15.0% had a female householder with no husband present, 6.0% had a male householder with no wife present, and 43.7% were non-families. Of all households, 35.4% were made up of individuals and 12.6% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 3.00.
The median age in the city was 37 years. 23.3% of residents were under the age of 18; 8.6% were between the ages of 18 and 24; 28.3% were from 25 to 44; 26.3% were from 45 to 64; and 13.4% were 65 years of age or older. The gender makeup of the city was 48.8% male and 51.2% female.
As of the census of 2000, there were 14,972 people, 6,684 households, and 3,689 families residing in the city. The population density was 2,977.4 people per square mile (1,149.2/km²). There were 7,432 housing units at an average density of 1,478.0/sq mi (570.5/km²). The racial makeup of the city was 99.7% White, 0.2% African American, 0% Native American, 0.1% Asian, 0% Pacific Islander, 0%% from other races, and 0% from two or more races. Hispanic or Latino of any race were 5.7% of the population.
There were 6,684 households out of which 24.9% had children under the age of 18 living with them, 36.7% were married couples living together, 13.7% had a female householder with no husband present, and 44.8% were non-families. 37.6% of all households were made up of individuals and 15.2% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.92.
In the city, the population was spread out with 23.1% under the age of 18, 9.6% from 18 to 24, 28.7% from 25 to 44, 22.3% from 45 to 64, and 16.4% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 91.0 males. For every 100 females age 18 and over, there were 88.6 males.
The median income for a household in the city was $29,495, and the median income for a family was $36,954. Males had a median income of $29,697 versus $22,212 for females. The per capita income for the city was $16,314. About 14.7% of families and 20.0% of the population were below the poverty line, including 28.8% of those under age 18 and 15.1% of those age 65 or over.