Mountain View, Contra Costa County, California
census-designated place in Contra Costa County, California, United States

Mountain View is a census designated place (CDP) in Contra Costa County, California, United States. The population was 2,622 at the 2020 census.
Geography
According to the United States Census Bureau, the CDP has a total area of 0.3 square miles (0.75 km2), all land.
Demographics
Mountain View first appeared as a census designated place in the 2000 U.S. census.
2020
As of the 2020 census, there were 2,622 people living in 864 households in Mountain View. The population density was 8,740 inhabitants per square mile (3,370/km2). The racial makeup of the CDP was 63.7% White, 2.7% African American, 1.4% Native American, 5.3% Asian, 0.3% Pacific Islander, 10.4% from other races, and 15.8% from two or more races. 25.5% of the population were Hispanic or Latino of any race.
In 2023, the US Census Bureau estimated that the median household income was $84,818, and the per capita income was $51,054. About 5.5% of families and 7.3% of the population were below the poverty line.
This brief starts where responsible research should: with the source description of “Mountain View, Contra Costa County, California” as census-designated place in Contra Costa County, California, 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 Contra Costa County, California, 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 Aug 14, 2026. The linked authority identifier is Q990179. Authority coordinates are 38.009, -122.118. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 2000 and 2023.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. 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 “Mountain View, Contra Costa County, California”, its source revision and the description used here.
- Expand the search: follow Mountain View, Contra Costa County, California primary sources, Mountain View, Contra Costa County, California archive and Mountain 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 “Mountain View, Contra Costa County, California”?
- 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 “Mountain View, Contra Costa County, California” 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.