Montclair, Virginia
census designated place in Prince William County, Virginia, United States
Montclair is a census-designated place (CDP) in Prince William County, Virginia, United States. The population was 22,279 in the 2020 census. An affluent residential community surrounding a man-made lake and golf course, development began in the late 1960s and new home construction ended during the 1990s.
Geography
According to the United States Census Bureau, the CDP has a total area of 6.2 square miles (16.0 km2), of which 6.0 square miles (15.6 km2) is land and 0.1 square mile (0.3 km2) (2.11%) is water.
Demographics
2020 census
As of the 2020 census, Montclair had a population of 22,279. The median age was 39.1 years. 25.6% of residents were under the age of 18 and 15.2% of residents were 65 years of age or older. For every 100 females there were 92.0 males, and for every 100 females age 18 and over there were 87.8 males age 18 and over.
100.0% of residents lived in urban areas, while 0.0% lived in rural areas.
There were 7,430 households in Montclair, of which 39.1% had children under the age of 18 living in them.
This brief starts where responsible research should: with the source description of “Montclair, Virginia” as census designated place in Prince William County, Virginia, United States. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as census designated place in Prince William County, Virginia, United States. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 7, 2026. The linked authority identifier is Q1374832. Authority coordinates are 38.616, -77.343. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020.
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 “Montclair, Virginia”, its source revision and the description used here.
- Expand the search: follow Montclair, Virginia primary sources, Montclair, Virginia archive and Montclair 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 “Montclair, Virginia”?
- Which earlier names or jurisdictions may reveal additional records?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Montclair, Virginia” 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.