THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
 
 
 
 
 
 
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Historical Markers and War Memorials in O’Brien County

 
Clickable Map of O'Brien County, Iowa and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg O Brien County, IA (5) Buena Vista County, IA (4) Cherokee County, IA (2) Clay County, IA (2) Dickinson County, IA (21) Lyon County, IA (9) Osceola County, IA (7) Plymouth County, IA (6) Sioux County, IA (12)  O'BrienCounty(5) O'Brien County (5)  BuenaVistaCounty(4) Buena Vista County (4)  CherokeeCounty(2) Cherokee County (2)  ClayCounty(2) Clay County (2)  DickinsonCounty(21) Dickinson County (21)  LyonCounty(9) Lyon County (9)  OsceolaCounty(7) Osceola County (7)  PlymouthCounty(6) Plymouth County (6)  SiouxCounty(12) Sioux County (12)
Primghar is the county seat for O'Brien County
Adjacent to O'Brien County, Iowa
Buena Vista County (4)  ►
Cherokee County (2)  ►
Clay County (2)  ►
Dickinson County (21)  ►
Lyon County (9)  ►
Osceola County (7)  ►
Plymouth County (6)  ►
Sioux County (12)  ►
 
Touch name above to highlight map location.
Touch blue arrow, or on map, to go there.
1 ► Iowa, O'Brien County, Hartley — Hartley Iowa Veterans' Memorial —
2 ► Iowa, O'Brien County, Sanborn — Sanborn Freedom Rock Veterans Memorial — O'Brien County Freedom Rock — -- Ray "Bubba" Sorensen II -- —
3 ► Iowa, O'Brien County, Sanborn — Sanborn Veterans Memorial —
4 ► Iowa, O'Brien County, Sanborn — Sanborn, Iowa Civil War Memorial —
5 ► Iowa, O'Brien County, Sheldon — Historical Record —
 
 
 
 
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Nov. 9, 2026