Custer County, Idaho Land For Sale (6 results)
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AcreValue offers multiple types of land for sale in Custer County, so if you’re looking for a new ranch, farm, recreational property, hunting ground, developmental property, or land investment you’ve come to the right place. Regardless of what your needs or objectives are for your land, we have a large inventory of available parcels that are updated regularly. Therefore, it’s very likely that we have the perfect parcel that meets all the search criteria & specifications that you’ve been searching for. Additionally, because our land for sale listings are always being updated due to the frequency of land being sold or new land listings being put on the market, make sure that you are checking back with AcreValue regularly for updates. When you find the perfect land parcel and you are ready to take the next steps you can easily connect directly with the listing agent to help you facilitate your land purchase. Browse AcreValue's Idaho land for sale page to find more potential opportunities in Idaho that fit your needs. We wish you the best of luck in finding your next ranch, farm, recreational property, hunting ground, developmental property, or land investment.
08/25/2026
$7,400,000
589 ac.
ACTIVE
Custer County - Big Lost River Ranch, Mackay, ID
The 589+/- acre Big Lost River Ranch is one of central Idaho's premier lifestyle, recreational, and ranching properties. Located in the upper Lost River Valley, 35+/- miles northeast of Ketchum/Sun Valley and 20+/- miles northwest of Mackay, the ranch is nearly surrounded by federal lands managed by the Bureau of Land Management (BLM) and encompasses over a mile of frontage on both banks of the Big Lost River, offering outstanding trout fishing.
Set up for year-round living, the ranch features a beautifully crafted and appointed owner's residence with two bedrooms and two and a half bathrooms. Designed with entertaining in mind, the owner's cabin is warm and inviting and highlighted by floor-to-ceiling windows that frame extraordinary views of Idaho's highest peaks. Additional building improvements include a wonderfully restored log guest cabin with a sleeping loft, a greenhouse adjacent to the owner's residence, a restored log tack shed, a horse barn, a calving shed, a shop building with adjoining equipment storage, and a set of working corrals with a scale house and cattle scale.
Originally run by the owners themselves as a year-round cow-calf operation producing high-quality branded beef, the ranch is currently leased for seasonal grazing to a local cattle rancher who emphasizes regenerative management practices. The property holds multiple irrigation rights covering up to 345 acres. The ranch's lush bottomland meadows are flood irrigated through a series of ditches, while approximately 130 acres are irrigated by a center pivot.
The ranch is a sanctuary for elk, moose, mule deer, whitetail deer, and other wildlife that utilize the Big Lost River corridor. With high-quality public lands in every direction, the ranch is an excellent base from which to explore the area's remarkable high country, with hiking, horseback riding, and ATV touring available right from the gate. In addition, the Sawtooth National Recreation Area, the Salmon River, and multiple federal wilderness areas are all within easy reach.
The Facts:
~ Premier lifestyle, sporting, and ranching property with 589+/- acres bordering federal land on multiple sides
~ Approximately 35 miles from the resort amenities of Ketchum/Sun Valley and just over 20 miles to the commercial services in Mackay
~ Beautifully crafted and appointed 2,452+/- owner's residence with two bedrooms and two and a half bathrooms
~ Additional structures include a restored 2,268+/- log guest cabin, greenhouse, restored log tack shed, horse barn, shop building with adjoining equipment storage, a calving shed, and a set of working corrals
~ Extremely private setting with jaw-dropping views of the nearby Lost River and White Knob ranges
~ Over one mile of both banks of the Big Lost River with excellent trout fishing, plus abundant fishing opportunities nearby
~ Currently operated as a seasonal pasture ranch utilizing decreed irrigation rights covering up to 345 acres
~ Proximity to miles of hiking, horseback riding, and ATV touring in some of Idaho's most scenic high country
~ Sanctuary for elk, moose, mule deer, whitetail deer, and other wildlife
~ Furnishings included
~ No conservation easement
~ Annual real estate taxes are approximately $2,240
08/20/2026
$249,900
17.8 ac.
ACTIVE
Custer County - 3795 W 4050 N, Moore, ID
Located just outside Mackay, this large, partially treed building lot has plenty of room for a home, outbuildings, or even a combination of residential and business use. The property is zoned Transitional Agriculture and has 3-phase power installed near both the northwest and southwest corners. With access from both the county road and Highway 93, the property lies out well. The lot offers great views of the surrounding mountain ranges from just about anywhere on the property. There is plenty of space to spread out and make the property work for whatever you have in mind. Mackay is just a short drive away and offers the basics for a comfortable small-town lifestyle. The Big Lost River and Mackay Reservoir are both nearby and offer good trout fishing. The surrounding public lands provide plenty of opportunities for hunting deer, elk, chukar, Hungarian partridge and other game. The area also has an established network of ATV/UTV trails, making it easy to get out and explore. A good-sized lot with power, multiple access points, mountain views, and plenty of options just outside of Mackay.
01/28/2026
$499,000
8.6 ac.
ACTIVE
Custer County - TBD Big Lost River, Lot#WP001, Mackay, ID
This rare 8.6-acre property offers an exceptional opportunity along the banks of the Big Lost River near Mackay. With approximately 1,000 feet of river frontage, the setting is scenic and full of potential. The land is fully fenced, with a power pole conveniently located at the edge of the property, making future development more accessible.Surrounded by working ranches, farms, and small homesteads, the area offers a quiet rural setting while remaining within easy reach of town amenities. Whether youre looking for a recreational retreat where you can fish, camp, and unwind, or a scenic homesite for a custom build with direct views of the Big Lost River, this property offers a rare combination of privacy, usability, and natural beauty.Access is provided via a shared driveway, and the expansive acreage allows flexibility for a variety of uses. Riverfront properties of this size and quality in the Mackay area are increasingly hard to find.Located just outside Mackay, the property sits at the gateway to the Lost River Range, known for its dramatic peaks, outdoor recreation, and wide-open landscapes. The area offers year-round activities, including fishing, hiking, hunting, ATV riding, and access to nearby public lands. Mackay Reservoir is only a short drive away, providing additional opportunities for boating and water recreation.
07/19/2024
$525,000
2.19 ac.
ACTIVE
Custer County - 4237 Summit Dr, Mackay, ID
Amazing chance to own a lot on the Big Lost River. Detailed plans have already been designed or design your own mountain retreat and enjoy the sound of the river with incredible views of the Lost River Mountains all around.
Land
This property spans over 2 acres and boasts more than 250 feet of river frontage. It offers breathtaking views of the surrounding mountains in every direction. Detailed plans have already been designed for a stunning main home, a guest house, and a spacious shop.
The main home is an impressive 3,581 square feet, featuring 3 bedrooms and 3 bathrooms. Its porch is designed to provide spectacular views of both the river and the mountains. The guest home, covering 704 square feet, includes 2 bedrooms, 1 bathroom, and a fully equipped kitchen. The shop, spanning 1,989 square feet, is designed with concrete flooring and includes both a 14-foot and a 10-foot bay door, making it perfect for various uses. This property combines natural beauty with thoughtful design, offering a unique opportunity to create a dream mountain retreat.
Recreation
The nearby Salmon-Challis National Forest offers opportunities for hunting, camping, hiking, mountain biking, and off-roading. The Big Lost River flows along the edge of the property.It is known for world class trout fishing. This river is home to species such as rainbow, brook, cutthroat, and bull trout. There are numerous river access spots as well up and down the valley.There is also a reservoir for more fishing and boating.
The surrounding national forest is teeming with diverse big game and upland birds. The mountains host elk, mule deer, moose, and antelope, while game birds like grouse and chukar can be spotted in these hills.
The forest contains numerous archaeological sites, including Native American rock art and ancient settlements. Craters of the Moon National Monument and Preserve is a unique geological area featuring vast lava fields, cinder cones, and other volcanic formations.
Region & Climate
Custer County experiences a continental climate typical of much of the Intermountain West region of the United States with cold winters and hot summers, low precipitation, and a high number of sunny days. Annual snowfall can vary but tends to be moderate, especially in the higher elevations.
History
Eastern Idaho was settled primarily in the 1880's and 1890's mostly by Pioneers. The areas first settled were along the Bear River and Snake River and then up the tributaries. Irrigation was originally developed with river and creek water close to the sources. Reservoirs were built on the Snake River to provide storage water and large canal systems were developed. When wells became feasible, the irrigation development continued in the desert areas away from the river. Today, there are many commercial farm units with canal water or wells providing an inexpensive source of water.
Location
Mackay Idaho is known nation-wide as one of the top 10 places to visit you've never heard of. Custer county is predominantly rural however tourism, hunting and fishing result in a variety of restaurants and amenities. Situated in the eastern part of the state is surrounded by the beautiful landscape of the Big Lost River and Salmon River Valleys. Big Lost River Valley is surrounded by mountains, including the tallest mountain in Idaho, Mt. Borah at an altitude of over 12,000 feet. There is a trail to the summit.
Agriculture is a significant part of the local economy in Eastern Idaho. The fertile soil and favorable climate support various crops, including potatoes, wheat, barley, and hay. Livestock operations, particularly cattle and sheep ranching, are also common in the region.
There are several nearby cities and towns where residents can access a variety of urban amenities. Located approximately 70 miles southeast of Custer County, Idaho Falls is the largest city in eastern Idaho. It offers a wide range of urban amenities, including shopping centers, restaurants, entertainment venues, cultural attractions, and medical facilities. Idaho Falls is also home to the Idaho Falls Regional Airport, providing convenient air travel access.
Located 80 miles away is the Wood River Valley, home to Bellevue, Hailey, Ketchum, and Sun Valley.Sun Valley was the first ski resort in America and remains the premier one. Available are down-hill and nordic skiing (the latter on a golf course for summer use).Culture, entertainment, endless restaurants, shopping and amenities abound. Also, in the Wood River Valley is an airport serving most of the western US.
08/03/2026
$330,000
0.32 ac.
ACTIVE
Custer County - 212 Pine Street, Mackay, ID
CHARMING... This tastefully updated 3-bedroom, 1 and 1/2-bath home is in the heart of Mackay. It will stop your search! Located across the street from the city park, one block off Main Street, close to schools and the Marinac Public Access, and only 10 minutes away from the Mackay Reservoir!!! Bring your boat and all of your toys thanks to ample off-street parking from both the alley and Pine Street. Invite the whole family!! This desirable home boasts 2 bonus rooms, a separate detached living/office space, a barn social space with a hot tub, a large garage, an RV pad stubbed with water, a back deck with a view of the mountains, a mudroom, and built-in pantries that accentuate the farmhouse charm.
07/01/2026
$1,850,000
97.5 ac.
ACTIVE
Custer County - 504 Lanier Lane, Challis, ID
Large 97.5 acre parcel in Challis with Salmon River adjacency. Water Rights: 6 shares of Challis Irrigation Co. Inc (180 inches of water) Currently used as 38.5 acres of irrigated Ag and 30 acres of irrigated pasture. 24 acres dry grazing. Currently planted in alfalfa.
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