Adelphi, Maryland facts for kids
The Adelphi Mill in July 2007
Location of Adelphi, Maryland
|Country||United States of America|
|• Total||2.7 sq mi (7.1 km2)|
|• Land||2.7 sq mi (7.1 km2)|
|• Water||0 sq mi (0.0 km2)|
|Elevation||171 ft (52 m)|
|• Density||5,500/sq mi (2,125/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|ZIP codes||20783, 20787|
|GNIS feature ID||0596997|
Adelphi is an unincorporated area and census-designated place in Prince George's County, Maryland. The population was 15,086 at the 2010 United States Census. It includes the communities of Adelphi Hills, Buck Lodge, Chatham, Cool Spring Terrace, and White Oak Manor.
The unincorporated Adelphi community takes its name from the historic Adelphi Mill, established in 1796 along the Northwest Branch of the Anacostia River. The Adelphi Mill is administered by the Maryland-National Capital Park and Planning Commission and continues to attract visitors and can be rented for special functions. During the 19th century, George Washington Riggs acquired much of the area northeast of Washington, D.C., as his Green Hill estate in the Chillum Manor district. That estate included present-day Adelphi. In the early 1920s, part of the area was acquired by Leander McCormick-Goodhart as part of his Langley Park estate. Labor organizer Mary Harris "Mother" Jones died in 1930, at the farm of Walter and Lillie May Burgess near Powder Mill and Riggs Roads in present-day Adelphi. A marker was erected by the Maryland State Highway Administration commemorating Mother Jones at her death site.
Unlike its nearby neighbors Hyattsville and College Park, the area remained relatively undeveloped until immediately following World War II. At that time, subdivisions quickly developed. To distinguish it from the other neighboring unincorporated West Hyattsville communities of Lewisdale and Langley Park, the growing subdivisions banded together in the mid-1950s and adopted the name "Adelphi" to reflect their commitment to the preservation of the historic mill of the same name. These subdivisions now include Adelphi Hills, Adelphi Knolls, Buck Lodge, Chatham, Cool Spring Terrace, Heitmuller Estates, Hillandale Forest, Knollwood, Riggs Hill Manor, and White Oak Manor. A community focal point originally developed in the late 1950s is the Adelphi Pool.
In 1971, the Harry Diamond Laboratories was established on 137 acres (0.55 km2) in the northern part of Adelphi. That facility continues as the Adelphi Laboratory Center, Army Research Laboratory (ARL), the U.S. Army's corporate research laboratory. Other adjacent federal facilities include the National Archives at College Park and headquarters of the Food and Drug Administration.
The following is a list of historic sites in Adelphi identified by the Maryland-National Capital Park and Planning Commission:
|Site name||Image||Location||M-NCPPC Inventory Number||Comment|
|1||Adelphi Mill and Storehouse||
||8401 and 8402 Riggs Road||65-006|
|2||Cool Spring Farm (Miller’s House)||2201 Cool Spring Road||65-005|
|3||Gallant House||3124 Powder Mill Road||61-013|
Adelphi is located at(38.996860, -76.966755).
According to the United States Census Bureau, the CDP has a total area of 2.7 square miles (7.1 km2), all of it land.
- Hillandale (north)
- College Park (east)
- University Park (southeast)
- Hyattsville (southeast)
- Chillum (south)
- Langley Park (southwest)
- Silver Spring (west; in Montgomery County)
As of the census of 2000, there were 14,998 people, 5,332 households, and 3,321 families residing in the CDP. The population density was 5,067.9 people per square mile (1,956.3/km²). There were 5,627 housing units at an average density of 1,901.4/sq mi (734.0/km²). The racial makeup of the CDP was 29.48% White, 39.83% African American, 0.28% Native American, 9.95% Asian, 0.06% Pacific Islander, 15.04% from other races, and 5.36% from two or more races. Hispanic or Latino of any race were 25.74% of the population.
There were 5,332 households out of which 30.6% had children under the age of 18 living with them, 42.5% were married couples living together, 13.5% had a female householder with no husband present, and 37.7% were non-families. 27.5% of all households were made up of individuals and 6.1% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.35.
In the CDP, the population was spread out with 22.7% under the age of 18, 13.0% from 18 to 24, 35.7% from 25 to 44, 19.1% from 45 to 64, and 9.5% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 98.1 males. For every 100 females age 18 and over, there were 96.6 males.
The median income for a household in the CDP was $45,827, and the median income for a family was $53,839. Males had a median income of $32,495 versus $31,932 for females. The per capita income for the CDP was $20,952. About 6.6% of families and 9.0% of the population were below the poverty line, including 6.2% of those under age 18 and 7.4% of those age 65 or over.
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