Lincoln County occupies Montana’s far northwestern corner, where Libby, Troy, and Eureka sit in separate mountain valleys connected by a sparse road network and major river corridors. Libby is the main southern hub, Eureka anchors the northeastern valley along U.S. 93, and Troy lies west along the Kootenai River side. Between them, Lake Koocanusa forms a long central water corridor, while Yaak River, Tobacco River, and the Fisher River system divide other mountain basins. High-resolution JPG versions of the maps are available together in the download ZIP below.
Lincoln County’s official website highlights Libby, Troy, and Eureka, and the Sheriff’s Office describes Libby as the county seat. The general map reflects that pattern clearly: Libby is the strongest central reference in the southern half, Eureka is separated by the long northern valley system, and Troy occupies the western Kootenai corridor. Understanding those three places first makes the rest of the county much easier to organize.
Table of Contents
Libby anchors the southern road network
On the general county map, Libby sits in the south-central-west part of the county. U.S. 2 passes through the broader Libby area and continues southeast toward Happys Inn, while Route 37 provides another strong local reference east of town. Routes 567, 228, and 48 extend into the mountain interior and toward the southern end of the Lake Koocanusa corridor.
Troy lies west of Libby, with Route 56 providing a north-south reference nearby. Farther northwest, Sylvanite and Yaak sit among a more complicated set of mountain roads, including routes 68, 92, 902, 472, and 338. This is a part of the county where road lines alone can be difficult to follow, so the Yaak River system is especially useful as a second reference.
Pioneer Junction appears south of Libby, while Bull Lake lies farther southwest. Happys Inn is labeled near the southeastern boundary on the U.S. 2 side. The map is useful for regional orientation, but current winter restrictions, mountain-road construction, and unpaved-road conditions should be checked separately.
Eureka and Fortine organize the northeastern valley
Eureka is the clearest settlement reference in the northeastern part of Lincoln County. U.S. 93 runs south through Fortine and toward Trego, while Route 470 reaches northwest from the Eureka side toward the West Kootenai area. Indian Springs and Stryker provide additional labels within the same broad northern valley system.
Trego lies farther south and west of the main U.S. 93 line, with Route 494 nearby. Reaching Libby from the Eureka area is not a simple straight descent because mountain ridges and Lake Koocanusa divide the county into separate corridors. The road and water maps together make that geography much easier to understand.
West Kootenai appears on the western side of the northern Lake Koocanusa region close to the long international border. Small road labels are especially useful here, so the high-resolution download files are helpful when the screen preview becomes crowded.
The city map connects Libby with Eureka and Troy by straight-line distance
The city-connections map uses Libby as the hub. Its printed index lists Libby at 3,042, Eureka at 1,840, and Troy at 871. These are values embedded in the supplied map and should not be treated as guaranteed current population estimates. Current demographic totals should be checked through recent U.S. Census Bureau data.
Eureka is labeled 41 miles from Libby, and Troy is labeled 16 miles away. Both measurements are straight-line distances rather than driving mileage. Actual road trips are longer because the highway network must follow mountain valleys and avoid terrain that the direct connector lines cross.
Troy sits west of Libby along the Kootenai River corridor and is the closer of the two connected cities. Eureka lies much farther north in a separate valley. The city map therefore makes the county’s long north-south shape and divided valley structure especially clear.
Kootenai River and Lake Koocanusa form the county’s largest water corridor
The terrain-and-water map gives Kootenai River the strongest role across the western and southern county. The river follows the Libby-Troy side, while Lake Koocanusa stretches north-south through the central-northern interior. Its long narrow shape follows a deep valley between surrounding mountains.
Tobacco River enters the northeastern side of the Lake Koocanusa area, and Glen Lake appears nearby. Dickey Lake lies farther southeast within another mountain basin. These named water features are useful because they divide a very large landscape with relatively few towns.
The terrain-and-water map is intended for geographic reference. It does not establish flood zones, water depth, parcel boundaries, water rights, navigation conditions, or safe stream crossings. Current boating, access, and water-condition information should be checked through the appropriate agencies.
Yaak River and Fisher River define separate mountain basins
The northwestern mountains are organized around Yaak River. West Fork Yaak River and East Fork Yaak River occupy separate high valleys before joining the larger Yaak system. These waterways provide some of the best geographic references for the remote road network around Yaak and Sylvanite.
In the south, Fisher River runs through a broad lower corridor, while Pleasant Valley Fisher River follows a separate valley farther east. Wolf Creek provides another labeled drainage toward the southeastern mountain side. Together they show that the southern county is divided into several parallel valleys rather than one continuous lowland.
Spar Lake and Bull Lake sit close to the southwestern boundary. Both are useful landmarks in a mountain area with few large settlements, and their surrounding terrain becomes easier to understand when compared with the elevation map.
Elevation ranges from about 550 to 2,581 meters
The elevation map reports an actual Lincoln County range of about 550 to 2,581 meters, with a mean elevation near 1,291 meters. The Kootenai River corridor, Lake Koocanusa, Yaak River, and Fisher River system appear in green as lower valleys, while surrounding ridges rise through yellow and brown.
High terrain is widespread across the west and northwest, where the Yaak River forks cut narrow green corridors between tightly packed ridges. The northeastern edge also contains high mountain terrain, although Lake Koocanusa and Tobacco River remain much lower.
In the south, Fisher River and Pleasant Valley Fisher River occupy broad lower routes surrounded by ridges that rise well above 2,000 meters. The elevation map is intended for county-wide comparison only and should not be used as survey-grade or engineering-grade data for a specific property.
Libby, Eureka, Troy, and the major rivers create a simple map framework
A practical way to read Lincoln County is to begin with Libby in the south, Eureka in the northeast, and Troy in the west. U.S. 2 and Route 37 organize the Libby side, U.S. 93 organizes the Eureka-Fortine corridor, and routes 68 and 92 help with the remote Yaak side.
Water features provide the next layer. Kootenai River and Lake Koocanusa form the largest corridor, Yaak River organizes the northwest, Tobacco River helps with the northeast, and the Fisher River system explains much of the south. Spar, Bull, Glen, and Dickey lakes provide additional local landmarks.
The WebP images embedded in the article are convenient for quick browsing. The high-resolution JPG files in the ZIP are better for printing or enlarging small road, river, and lake labels. Because these are static reference maps, current road access, water levels, and seasonal restrictions should be checked through current official information.
Frequently Asked Questions
Are the Libby-to-Eureka and Troy distances driving distances?
No. The city map shows Eureka at 41 miles and Troy at 16 miles from Libby as straight-line distances. Actual driving distances are longer because the roads follow mountain valleys rather than the direct connector lines.
Where is the highest terrain in Lincoln County?
High terrain is widespread across the western and northwestern mountain areas, with additional high ridges along other county edges. The Kootenai River, Lake Koocanusa, Yaak River, and Fisher River valleys are much lower.
Can the 550–2,581 meter elevation range be used for a property or engineering project?
No. The range is a county-wide reference for comparing low river valleys with high mountain terrain. Precise site elevations should come from an authoritative source such as the USGS 3D Elevation Program and, when necessary, a professional survey.
Map File Information
Download the Lincoln County county, city, terrain-and-water, and elevation maps as high-resolution A3 JPG files.
- Included Files: county map, city map, terrain and water map, elevation map
- File Type: ZIP containing 4 JPG files
Related Maps
Sources and References
County government and local background are available from the official Lincoln County website. The Lincoln County Sheriff’s Office About Us page describes Lincoln County as Montana’s northwesternmost county and identifies Libby as the county seat.
Boundary and road-reference data can be checked through U.S. Census Bureau TIGER/Line Shapefiles. Hydrographic data are available from USGS National Hydrography, and elevation data through the 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.
