Holt County, Nebraska

Holt County is a county in the U.S. state of Nebraska. As of the 2020 census, the population was 10,127, and was estimated to be 10,067 in 2025. The county seat and the largest city is O'Neill.

In the Nebraska license plate system, Holt County was represented by the prefix "36" (as it had the 36th-largest number of vehicles registered in the state when the license plate system was established in 1922).