Harmon County occupies the far southwestern corner of Oklahoma, where the Texas line, the Red River system, and a sparse network of small communities define the map. Hollis is the most useful starting point: U.S. 62 crosses State Highway 30 there, Gould lies to the east, and the county stretches a long way north toward State Highway 9 and Carl. The maps on this page can be viewed online, while the original high-resolution JPG versions are available together in a ZIP download for printing or close inspection.
The county is not a uniform plain. High, deeply cut uplands occupy much of the northwest, while lower country becomes more extensive toward the south and east. The Salt Fork of the Red River cuts across the north-central portion, and the Prairie Dog Town Fork of the Red River follows the far southern side near the Texas boundary. Cave Creek, Turkey Creek, Sandy Creek, and numerous smaller tributaries fill the broad area between them, giving the terrain a strongly dissected appearance.
Table of Contents
Use Hollis to orient the road map and county outline
Hollis is the clearest anchor on the general map. The Oklahoma Historical Society identifies it as the Harmon County seat and places it at the junction of U.S. Highway 62 and State Highway 30. That same intersection stands out on the map, making it easy to establish north, south, east, and west before looking for smaller features. Following U.S. 62 east leads toward Gould, while State Highway 30 continues north through the long western section of the county.
The county’s shape changes noticeably as it extends north. Its upper portion is narrow and projects westward, while the broader southern half contains a denser grid of local roads around Hollis and Gould. State Highway 9 crosses the northern section, and Carl is labeled near a cluster of roads in the northwest. The road pattern becomes much more open away from the southern communities, which makes the difference between the settled south and the sparsely populated uplands easy to see without relying on population statistics.
The western edge also has unusual historical importance. The Oklahoma Historical Society’s marker program places the 100th Meridian Oklahoma/Texas State Line marker on U.S. 62 about four miles west of Hollis. The 100th meridian became the confirmed state boundary after a long history of disputes over the exact line. On today’s map, that western border contrasts with the curved river boundary to the south, giving Harmon County a shape that is easier to remember once those two features are connected.
Hollis and Gould concentrate the county’s mapped communities
The city map removes most minor road detail and emphasizes Hollis and Gould. Hollis sits in the southwestern part of the county, and Gould is farther east along the same general east-west corridor. The city index ranks the two places, but the displayed numbers are best treated as map reference values rather than current population figures. Readers who need a current population count should check the latest Census Bureau dataset instead of assuming the map labels represent the newest estimate.
This simplified view is especially useful for understanding where settlement is concentrated. The northern half of Harmon County has few prominent town labels, while the south contains the two communities that dominate the map. Once Hollis and Gould are fixed in mind, the surrounding counties become easier to place as well: Greer County is to the northeast, Jackson County to the east and southeast, Beckham County to the north, and Texas lies beyond the western and southern edges.
Hollis is important for more than its size on the map. The Oklahoma Historical Society notes that it has long served as the county’s administrative center and that its location at U.S. 62 and State Highway 30 gives it a practical transportation role. Using Hollis as the recurring reference point helps connect the city map with Lake Hall to the north, the Salt Fork farther north, and the Red River system along the southern margin.
The Salt Fork and southern Red River system shape the drainage
The strongest line on the water map is the Salt Fork of the Red River. It enters from the west and bends across the north-central county before leaving toward the east. A web of shorter tributaries descends from higher ground on both sides. Farther south, the Prairie Dog Town Fork of the Red River appears near the county’s lower boundary, forming part of the larger Red River system that separates Oklahoma from Texas in this corner of the state.
Several named creeks make the map easier to divide into smaller areas. Grape Creek and Bear Creek appear in the north, Cave Creek runs across the central-eastern area, and Turkey Creek becomes prominent in the southeast. Sandy Creek is easy to spot near the southern river corridor. Lake Hall lies west of center just south of the Salt Fork, while Club Lake is labeled farther east. Finding the two major river corridors first makes these smaller streams and lakes much easier to place.
The Oklahoma Historical Society describes Harmon County as part of the Gypsum Hills and notes drainage by the Red River and several tributaries, including the Salt and Elm forks and Turkey Creek. The supplied map strongly emphasizes the Salt Fork, Turkey Creek, and southern Red River branches. It is a geographic reference map rather than a flood or boating guide; it does not show flood probability, water depth, discharge, water quality, access rights, or current safety conditions. Those questions require current USGS or government hazard information.
Elevation from about 436 to 628 meters separates uplands from river country
The elevation map labels an actual range of about 436 to 628 meters, with a mean near 514 meters. Dark brown and tan mark the higher ground within the county, while green marks lower land. The broadest high area occupies the northwest, where the surface is broken by closely spaced ridges and valleys. This is the most rugged-looking part of the map and stands in clear contrast to the lower southern half.
The Salt Fork creates a lower band through the north-central county. South of that valley, elevations generally fall, and green becomes dominant across much of the southeast and along the Red River system. The transition is not perfectly smooth: smaller ridges remain within the lower country, and stream valleys cut into the uplands. Even so, the county-wide change from high northwest to lower south and east is one of the clearest patterns in the map set.
Comparing the elevation and water maps shows why many green corridors follow the same routes as named streams. Water collects in the lower valleys, while the higher ridges between them form drainage divides. This elevation surface is appropriate for broad county comparison, not survey-grade work. Exact parcel elevations, building design, drainage calculations, road grades, and legal surveys require more precise source data and professional measurements where applicable.
The 100th meridian and Old Greer County explain today’s borders
Harmon County’s present outline makes more sense when its history is considered. According to the Oklahoma Historical Society, the area was once part of the much larger Greer County claimed by Texas. A U.S. Supreme Court decision in 1896 placed the disputed territory in Oklahoma Territory. In 1909, local voters approved the creation of Harmon County from part of Greer County, and Hollis became the county seat.
The 100th meridian on the west is another part of that border story. The Oklahoma Historical Society’s historical marker program explains that the exact meridian had remained disputed for years and was confirmed as the Oklahoma-Texas line in the early twentieth century. A marker stands along U.S. 62 west of Hollis. That history turns an otherwise simple straight line on the map into one of the county’s most distinctive geographic references.
Hollis predates the county itself. The Oklahoma Historical Society records that the town was platted in 1898, when the area was still associated with Old Greer County, and later became the center of the new county government. On the modern map, the meeting of U.S. 62 and State Highway 30 reinforces that central role. The county’s history and present road system therefore point to the same place even though the surrounding boundary story is much older and more complicated.
Compare roads, water, and relief at three useful reference areas
Hollis is the easiest place to compare all the map layers. On the road map it is the main highway junction. On the water map it lies south of the Salt Fork and north of the Red River system, while the elevation map places it between the high northwestern uplands and the lower southeastern terrain. Returning to the same location on each map shows how transportation, drainage, and elevation describe different parts of the same landscape.
Gould provides a second useful comparison. It is east of Hollis and closer to the network of small streams that leads toward Turkey Creek and the eastern side of the county. The elevation shading becomes greener in this direction, indicating generally lower terrain than the northwest. The city map makes Hollis and Gould look like a simple two-place pair, but the water and elevation maps reveal more variation in the country between and around them.
The northern section around Carl and State Highway 9 is quite different. Major town labels become scarce, local roads are more widely spaced, and the elevation map shows extensive tan and brown uplands. Grape Creek and Bear Creek cut through this higher ground before the drainage descends toward larger channels. Looking north from Hollis therefore changes both the human and physical map: settlements thin out while relief becomes more pronounced.
Which Harmon County map should you use?
Use the general county map when the question is about towns, highways, local roads, or the county outline. Hollis and the U.S. 62–State Highway 30 junction provide the quickest starting point, with Gould to the east and State Highway 9 across the north. The city map is better when only the relative placement of Hollis and Gould matters and the extra road detail would be distracting.
For physical geography, the water and elevation maps work best together. Find the Salt Fork and the southern Prairie Dog Town Fork Red River first, then compare those corridors with the green lowlands on the elevation map. The brown northwestern uplands stand out just as clearly. This side-by-side view is useful for classroom work, local-history explanations, and anyone trying to understand why streams and roads occupy different parts of the county.
The web previews are convenient for quick viewing, but the downloadable ZIP contains high-resolution JPG files for the county and road map, city map, terrain and water map, and elevation map. They are useful for printing, presentations, classroom material, and personal geographic reference. They should not replace legal boundary records, parcel surveys, current navigation, engineering data, or official flood-hazard products.
Frequently Asked Questions
What is the easiest reference point on a Harmon County map?
Start with Hollis at the junction of U.S. 62 and State Highway 30. From there, Gould is east along the southern part of the county, State Highway 30 leads north, and the Texas line lies to the west. Adding the Red River system along the south makes the county’s overall shape easy to remember.
How can I distinguish the Salt Fork from the southern Red River branches?
The Salt Fork of the Red River is the strong east-west channel in the north-central part of Harmon County. The Prairie Dog Town Fork Red River appears much farther south near the county boundary. Smaller waterways such as Cave Creek, Turkey Creek, and Sandy Creek occupy the broad area between those two larger river corridors.
Can the 436–628 meter elevation range be used for land surveying?
No. The range is useful for comparing higher uplands and lower river valleys at county scale. Exact parcel elevations, building design, drainage calculations, road grades, and legal surveys require more precise data and professional measurement when appropriate.
Map File Information
Download the Harmon County road, city, water, and elevation maps together as high-resolution JPG files.
- Included Files: Use only the versions confirmed in the article and supplied images
- File Type: Use the confirmed download contents
- Intended Use: Printing, education, presentations, and map-based projects
Related Maps
Sources and References
- Oklahoma Historical Society – Harmon County
- Oklahoma Historical Society – Hollis
- Oklahoma Historical Society – Harmon County Historical Markers
- U.S. Census Bureau – TIGER/Line Shapefiles
- USGS – National Hydrography
- USGS – 3D Elevation Program
Green Map creates custom-edited map images using open geographic data sources such as geoBoundaries, Natural Earth, OpenStreetMap, and government open data. These maps are edited visual materials, not raw data files, and are provided for education, documents, presentations, and graphic reference.
