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MARKER DATABASE
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6 entries match your criteria.  

 
 

Historical Markers in Harmon County

 
Clickable Map of Harmon County, Oklahoma 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 Harmon County, OK (6) Beckham County, OK (22) Greer County, OK (28) Jackson County, OK (4) Childress County, TX (10) Collingsworth County, TX (15) Hardeman County, TX (17)  HarmonCounty(6) Harmon County (6)  BeckhamCounty(22) Beckham County (22)  GreerCounty(28) Greer County (28)  JacksonCounty(4) Jackson County (4)  ChildressCountyTexas(10) Childress County (10)  CollingsworthCounty(15) Collingsworth County (15)  HardemanCounty(17) Hardeman County (17)
Hollis is the county seat for Harmon County
Adjacent to Harmon County, Oklahoma
Beckham County (22)  ►
Greer County (28)  ►
Jackson County (4)  ►
Childress County, Texas (10)  ►
Collingsworth County, Texas (15)  ►
Hardeman County, Texas (17)  ►
 
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1 ► Oklahoma, Harmon County, Gould — Former Area Schools —
2 ► Oklahoma, Harmon County, Hollis — 100th Meridian Oklahoma/Texas State Line —
3 ► Oklahoma, Harmon County, Hollis — 242 — La Casa School —
4 ► Oklahoma, Harmon County, Hollis — Old Greer County —
5 ► Oklahoma, Harmon County, Hollis — 235 — Ron School — The Ron School Cubs —
6 ► Oklahoma, Harmon County, Vinson — Vinson —
 
 
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Oct. 17, 2026