Mississippi County, Arkansas
county in Arkansas, United States

Mississippi County is the easternmost county in the U.S. state of Arkansas. As of the 2020 census, the population was 40,685. There are two county seats, Blytheville and Osceola. The county is named for the Mississippi River which borders the county to the east. Mississippi County is part of the First Congressional District in Arkansas.
The Blytheville, AR Micropolitan Statistical Area includes all of Mississippi County.
History
Pre-European exploration
Extant early settlements include the Eaker Site and the Sherman Mound.
1812 New Madrid earthquake
Local oral tradition held that prior to the major earthquakes of 1812, the lands in Mississippi County were higher in elevation compared to now and were not prone to flooding. Though the earthquake was named for New Madrid, Missouri, as that was the only town in the area with any population, the actual epicenter of the quake was three miles below what is now Blytheville, Arkansas.
Antebellum period
American settlers were recorded in the area as early as 1828.
Begin with the source’s own compact description: “Mississippi County, Arkansas” is county in Arkansas, United States. The dossier treats that line as a proposition to test through Mississippi, County and Arkansas, not as a finished interpretation.
Why this record matters
The phrase “county in Arkansas, 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.
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 17, 2026. The linked authority identifier is Q61157. VIAF identifies the subject as 261675508. The Library of Congress control number is n80113016. Authority coordinates are 35.777, -90.054. 5 of 6 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 2020, 1812 and 1828.
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 “Mississippi County, Arkansas”, its source revision and the description used here.
- Expand the search: follow Mississippi County, Arkansas primary sources, Mississippi County, Arkansas archive and Mississippi 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 “Mississippi County, Arkansas”?
- 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 “Mississippi County, Arkansas” 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.