| Official Name: | Martinsburg, New York |
| Other Name: | Martinsburgh |
| Settlement Type: | Town |
| Pushpin Map: | New York#USA |
| Pushpin Label: | Martinsburg |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Lewis |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 196.93 |
| Area Land Km2: | 196.02 |
| Area Water Km2: | 0.91 |
| Area Total Sq Mi: | 76.03 |
| Area Land Sq Mi: | 75.68 |
| Area Water Sq Mi: | 0.35 |
| Population As Of: | 2020 |
| Population Total: | 1316 |
| Population Density Km2: | 6.68 |
| Population Density Sq Mi: | 16.95 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation M: | 566 |
| Elevation Ft: | 1857 |
| Coordinates: | 43.7325°N -75.4819°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 13404 |
| Area Code: | 315 |
| Blank Name: | FIPS code |
| Blank Info: | 36-049-45854 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 979202 |
Martinsburg is a town in Lewis County, New York, United States. The population was 1,433 at the 2010 census.[2] The town is named after its founding father, General Walter Martin.
Martinsburg is in the west-central part of the county, south of Lowville, the county seat.
Settlers began arriving around 1801. Martinsburg was established from part of the town of Turin in 1803. When it was formed the town name was spelled "Martinsburgh". In 1819, the town was augmented by more of Turin.
The community of Martinsburg in the town was the county seat for Lewis County until 1864, when it moved to Lowville. The town hall in Martinsburg, built in 1812, is the site of the first county court session, held the same year. In 1839, it was the site of the only execution in the county.
The Gen. Walter Martin House and Martinsburg Town Hall are listed on the National Register of Historic Places.
According to the United States Census Bureau, the town has a total area of 196.9sqkm, of which 196sqkm are land and 0.9sqkm, or 0.46%, are water.[3]
The eastern town line is the Black River. The western part of Martinsburg is on the Tug Hill Plateau.
New York State Route 12 and New York State Route 26 are north-south highways through the town, with NY-12 being the more easterly route.
At the 2000 census,[4] there were 1,249 people, 473 households and 347 families residing in the town. The population density was 16.5 per square mile (6.4/km2). There were 627 housing units at an average density of 8.3 per square mile (3.2/km2). The racial makeup of the town was 98.00% White, 0.48% African American, 0.48% Native American, 0.24% from other races, and 0.80% from two or more races. Hispanic or Latino of any race were 0.48% of the population.
There were 473 households, of which 34.9% had children under the age of 18 living with them, 61.3% were married couples living together, 7.2% had a female householder with no husband present, and 26.6% were non-families. 22.8% of all households were made up of individuals, and 8.2% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.11.
28.3% of the population were under the age of 18, 7.8% from 18 to 24, 28.9% from 25 to 44, 22.3% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 103.4 males. For every 100 females age 18 and over, there were 103.2 males.
The median household income was $31,902 and the median family income was $35,978. Males had a median income of $26,705 compared with $20,682 for females. The per capita income for the town was $13,894. About 7.9% of families and 11.9% of the population were below the poverty line, including 18.3% of those under age 18 and 9.6% of those age 65 or over.