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Agate, Nebraska
Agate is a small unincorporated community in Sioux County, Nebraska, on Nebraska Highway 29 about 19 miles south-southeast of Harrison, the county seat. It takes its name from James H. Cook's Agate Springs Ranch, itself named for the agate deposits found in the surrounding hills.
Agate is best known today as the gateway to Agate Fossil Beds National Monument, a nationally significant paleontological site preserving Miocene-era fossil beds discovered on Cook's ranch. The community's own post office operated for nearly 70 years, from 1899 to 1968.
History
Agate grew up around James H. Cook's Agate Springs Ranch, taking its name from the agate deposits scattered through the nearby hills. A post office was established in 1899 and remained in continuous operation until 1968, nearly seven decades of service to this remote corner of the Nebraska Panhandle. Cook's ranch became internationally known after significant Miocene mammal fossils were discovered there, a legacy preserved today at Agate Fossil Beds National Monument.
Location & Access
County: Sioux County
Region: Nebraska Panhandle
Setting: Along Nebraska Highway 29
Coordinates: approximately 42.420° N, 103.794° W
Elevation: 4,439 feet
Designation: Unincorporated community
Adjacent Counties
Sioux County borders Fall River County, South Dakota (north), Dawes County (northeast), Box Butte County (southeast), Scotts Bluff County (south), Goshen County, Wyoming (southwest), and Niobrara County, Wyoming (northwest).
Nearby Towns
Harrison (Sioux County's seat, about 19 miles north-northwest) sits at 4,876 feet elevation, the highest of any town in Nebraska. Platted as Bowen in 1886 when the railroad arrived, it was renamed in 1887 for President Benjamin Harrison and incorporated in 1889; the 2020 population was 239. Nebraska Governor and U.S. Senator Dwight Griswold was born there. Andrews (about 15 miles north-northeast) is an unincorporated community whose post office operated from 1906 to 1951.
Points of Interest
- Agate Fossil Beds National Monument: A National Park Service site preserving Miocene-era mammal fossils discovered on the historic Agate Springs Ranch.
- Agate Springs Ranch: James H. Cook's ranch, the source of both the community's name and its paleontological fame.
Education & Health
Schools: Students in the Agate area attend school in Harrison.
Health: Nearest hospital and clinic services are in Harrison.