Glassmanor, Maryland
unincorporated community and census-designated place in Prince George's County, Maryland, United States
Glassmanor is an unincorporated community and census-designated place in Prince George's County, Maryland, United States. As of the 2020 census, it had a population of 18,430. In the 1990 and 2000 censuses, the United States Census Bureau had placed Glassmanor and the adjacent community of Oxon Hill in the "Oxon Hill-Glassmanor" census-designated place for statistical purposes. Glassmanor was last delineated separately in 1980, when the CDP recorded a population of 7,751.
The original Glassmanor apartments were built circa 1950 by the Glassman company, just outside the border of southeast Washington. In the mid-1950s, the Eastover shopping center was built across the highway, followed by other adjoining apartment projects in the 1960s. U.S. Senator George McGovern, who was the Democratic Party's presidential candidate in 1972, lived briefly in Glassmanor while a freshman congressman. The area has undergone tremendous demographic and social changes since that time.
Geography
According to the U.S. Census Bureau, Glassmanor has a total area of 2.4 square miles (6.1 km2), all land. The CDP is bordered by Washington, D.C. to the northwest, the town of Forest Heights to the west, Oxon Hill to the south, Temple Hills to the southeast, Marlow Heights to the east, and Hillcrest Heights to the northeast.
Begin with the source’s own compact description: “Glassmanor, Maryland” is unincorporated community and census-designated place in Prince George's County, Maryland, United States. The dossier treats that line as a proposition to test through Glassmanor, Maryland and unincorporated, not as a finished interpretation.
Why this record matters
The phrase “unincorporated community and census-designated place in Prince George's County, Maryland, United States” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Sep 6, 2026. The linked authority identifier is Q3885829. Authority coordinates are 38.819, -76.999. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1990, 2000 and 1980.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Glassmanor, Maryland”, its source revision and the description used here.
- Expand the search: follow Glassmanor, Maryland primary sources, Glassmanor, Maryland archive and Glassmanor research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Glassmanor, Maryland”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Glassmanor, Maryland” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.