| Official Name: | MacArthur, West Virginia |
| Settlement Type: | Census-designated place (CDP) |
| Mapsize: | 250x200px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | West Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Raleigh |
| Unit Pref: | Imperial |
| Area Total Km2: | 7.7 |
| Area Land Km2: | 7.7 |
| Area Water Km2: | 0.0 |
| Area Total Sq Mi: | 3.0 |
| Area Land Sq Mi: | 3.0 |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2010 |
| Population Footnotes: | [1] |
| Population Total: | 1500 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 2467 |
| Coordinates: | 37.7517°N -81.2069°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 25873 |
| Area Code: | 304 |
| Blank Name: | FIPS code |
| Blank Info: | 54-49564[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2390105 |
MacArthur is a census-designated place (CDP) in Raleigh County, West Virginia, United States. Originally, it was named Hollywood and renamed MacArthur after General of the Army Douglas MacArthur in 1942. The population was 1,500 at the 2010 census.
According to the United States Census Bureau, the CDP has a total area of 3.0 square miles (7.7 km2), all land.
As of the census of 2000, there were 1,695 people, 714 households, and 496 families living in the CDP. The population density was 571.4 people per square mile (220.8/km2). There were 783 housing units at an average density of 264.3/sq mi (102.1/km2). The racial makeup of the CDP was 98.52% White, 0.41% African American, 0.35% Native American, 0.06% Asian, 0.12% Pacific Islander, 0.06% from other races, and 0.47% from two or more races. Hispanic or Latino of any race were 0.71% of the population.
There were 714 households, out of which 28.6% had children under the age of 18 living with them, 57.1% were married couples living together, 9.4% had a female householder with no husband present, and 30.4% were non-families. 26.8% of all households were made up of individuals, and 13.7% had someone living alone who was 65 years of age or older. The average household size was 2.37 and the average family size was 2.87.
In the CDP, the population was spread out, with 22.9% under the age of 18, 6.6% from 18 to 24, 27.5% from 25 to 44, 26.0% from 45 to 64, and 16.9% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 94.4 males. For every 100 females age 18 and over, there were 89.1 males.
The median income for a household in the CDP was $29,607, and the median income for a family was $34,167. Males had a median income of $31,208 versus $21,346 for females. The per capita income for the CDP was $17,150. About 10.6% of families and 12.3% of the population were below the poverty line, including 18.0% of those under age 18 and 3.1% of those age 65 or over.