Platte County, Nebraska
Platte County is a county located in the U.S. state of Nebraska. As of the 2020 census, the population was 34,296, and was estimated to be 35,649 in 2025, making it the eighth-most populous county in Nebraska. The county seat and the largest city is Columbus.
Platte County comprises the Columbus, NE Micropolitan area.
In the Nebraska license plate system, Platte County was represented by the prefix "10" (as it had the 10th-largest number of vehicles registered in the state when the license plate system was established in 1922).