Banner County, Nebraska

Banner County is a county in the western part of the U.S. state of Nebraska in the Great Plains region of the United States. As of the 2020 census, its population was 674, and was estimated to be 665 in 2024. The county seat and the largest community is the unincorporated community of Harrisburg; there are no incorporated municipalities within the county. Banner County is part of the Scottsbluff, NE micropolitan area.

In the Nebraska license plate system, Banner County was represented by the prefix "85" (as it had the 85th-largest number of vehicles registered in the state when the license plate system was established in 1922).

Banner County was created on November 6, 1888.

When Nebraska became a state in 1867, a single county encompassed the entire Panhandle. In 1870, the Panhandle's southern half was organized as Cheyenne County. The arrival of increasing numbers of settlers led to the partitioning of the county in 1888: the eastern third became Deuel County; the middle third became present-day Cheyenne County; and the western third became Kimball, Scotts Bluff, and Banner Counties. The last of these was named by citizens who declared it would become the state's "banner county", and "the brightest star in the constellation of Nebraska counties".

Upon the county's organization, the settlement of Ashford was chosen as the temporary county seat. Four communities aspired to be chosen as the permanent county seat: Ashford, Harrisburg, Freeport, and Banner. Two special elections proved necessary before Harrisburg was chosen.

The initial settlement of the area was by cattle ranchers, drawn by good pastures in the Pumpkin Creek valley. In the late 1880s, these open-range ranchers were displaced by an influx of settlers; by 1890, almost every quarter-section (160 acres, or 65 ha) was claimed by homesteaders. However, the good moisture years that had attracted these settlers were followed by a severe drought in 1893 and 1894, which drove many of the new settlers away; the number of farms in the county declined by more than half, from 565 in 1890 to 226 in 1900. The land thus vacated was again used by ranchers, who raised both crops and cattle. The 1904 passage of the Kinkaid Act, which allowed homesteaders to claim 640 acres (260 ha) brought a new wave of settlers; however, even these larger tracts were often insufficient to support a family, and many of the Kinkaid claims were eventually sold to established cattle ranchers.

The county's growth was hindered by the absence of railroads: the nearest lines ran through Kimball, 11 miles (18 km) to the south, and Gering, 8 miles (13 km) to the north. Roads were also slow to develop in the county: in 1921, only dirt roads existed. The difficulty of reaching markets tended to discourage commercial crop farming in the county.

Rainfall in Banner County is light and variable; the average yearly precipitation at the Harrisburg weather station is 14.3 inches (360 mm). Farmers responded by resorting to irrigation. The first irrigation well was drilled by the late 1920s, and others quickly followed. By the late 20th century, center-pivot irrigation systems were in use through much of the county. By 2000, the Pumpkin Creek basin had approximately 500 registered irrigation wells. Groundwater pumping combined with drought conditions ended surface flow in Pumpkin Creek by 1993, and significantly reduced the valley's groundwater levels. In 2001, the North Platte Natural Resources District, which regulates water use in the watershed, declared a moratorium on the drilling of new wells, and limited existing operations to 14 inches (360 mm) of irrigation water per year. Complicating matters, lawsuits were filed contending water use in the Pumpkin Creek valley depleted flows into Lake McConaughy and interfered with the prior water rights of downstream irrigators.