Explore Harmon County, Oklahoma with this interactive street and satellite map. Browse all 2 cities and towns in Harmon County below.
| County | Harmon |
| State | Oklahoma (OK) |
| County Seat | Hollis |
| Country | United States of America |
| Latitude | 34.679647 |
| Longitude | -99.841627 |
| Cities & Towns | 2 |
| Area Codes | 405 |
Harmon County occupies the southwestern-most corner of Oklahoma, a landscape defined by the relentless reach of the Red River and the stark, gypsum-rich earth that defines the boundary between the plains and the high desert transition. The terrain here is marked by broad, flat expanses that hold the heat of the afternoon long after the sun has dipped below the horizon, creating a shimmering quality in the air that distorts the distant fence lines. To the north and east, the land rises into subtle breaks and ridges, where the soil shifts from a deep, iron-heavy red to a pale, chalky gray. The climate is a rigorous one, defined by the dry, restless winds that scour the wheat fields and carry the scent of parched earth and distant thunderstorms, shaping a geography that feels both immense and deeply exposed.
Harmon County emerged from the dissolution of the Greer County region, a territory once contested between Texas and the federal government before the Supreme Court settled the matter in favor of the Oklahoma Territory. The formation of the county in the early twentieth century followed a period of intense migration, as homesteaders arrived to claim land that had previously been part of the vast ranges used by nomadic tribes and cattle drovers. The county seat was established to serve as the administrative anchor for a population that arrived by wagon and train, eager to turn the stubborn, sun-baked dirt into productive farmland. The architecture of the civic center reflects this era of sudden, determined growth, featuring brick facades that remain cool to the touch even in the height of summer, standing as quiet witnesses to the transition from open range to organized plots of land.
Agriculture remains the primary pulse of life here, with vast fields of cotton and winter wheat stretching toward the sky, governed by the ancient, unforgiving cycle of rain and drought. Residents navigate their days with a pragmatic focus on the harvest, their routines dictated by the seasons and the heavy, metallic smell of rain that occasionally sweeps across the county from the Texas panhandle. The character of the place is defined by a sense of endurance, a quiet stubbornness that persists in the face of the shifting economic tides and the thinning of the rural population. At dusk, the light casts long, violet shadows across the stubble of the fields, and the silence that descends upon the plains carries a weight that feels as old as the earth itself, grounding the people who choose to remain in this vast, open expanse.
This page provides an interactive map of Harmon County, Oklahoma alongside links to detailed street maps for 2 cities and towns. The county seat is Hollis. Each city and town map page includes live weather, local news and precise GPS coordinates.
The Search Maps button below the county map opens USGS topographic maps and aerial imagery as base layers, with a labelled U.S. National Grid (USNG) overlay, a distance and bearing tool, and a single-fix GPS readout giving your USNG grid reference and latitude and longitude.
Location data is sourced from the USGS GNIS database and verified by coordinates, not name matching alone.
| Page generated | September 2026 |
| Location data | USGS GNIS database; coordinates matched to 2020 US Census records |