Mosby, Missouri
city in Clay County, Missouri, United States
Mosby is a city in Clay County, Missouri, United States, along the Fishing River. The population was 101 at the 2020 census. It is part of the Kansas City metropolitan area.
History
A post office called Mosby was established in 1887, and remained in operation until 1999. The city was named after A. G. Mosby, the original owner of the site.
Geography
According to the United States Census Bureau, the city has a total area of 2.09 square miles (5.41 km2), of which 2.08 square miles (5.39 km2) is land and 0.01 square miles (0.03 km2) is water.
Demographics
Racial and ethnic composition
2010 census
At the 2010 census there were 190 people, 72 households, and 47 families living in the city. The population density was 91.3 inhabitants per square mile (35.3/km2). There were 87 housing units at an average density of 41.8 per square mile (16.1/km2). The racial makup of the city was 97.4% White, 1.1% African American, 0.5% Asian, 0.5% from other races, and 0.5% from two or more races.
The public source identifies “Mosby, Missouri” as city in Clay County, Missouri, United States. This brief keeps that definition visible, then builds a research path around Mosby, Missouri and city.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Mosby, Missouri”, the useful work is to connect “city in Clay County, Missouri, United States” to the records capable of establishing context and consequence.
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 13, 2026. The linked authority identifier is Q550338. Authority coordinates are 39.314, -94.303. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1887, 1999 and 2010.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. 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 “Mosby, Missouri”, its source revision and the description used here.
- Expand the search: follow Mosby, Missouri primary sources, Mosby, Missouri archive and Mosby 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 “Mosby, Missouri”?
- Which authority defined the place, boundary or structure at the relevant date?
- Which earlier names or jurisdictions may reveal additional records?
Search terms from this dossier
This entry incorporates text from “Mosby, Missouri” 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.