Platte County, Nebraska

Platte County, Nebraska
The Platte County Courthouse in Columbus
Location within the U.S. state of Nebraska
Coordinates: 41°34′37″N 97°30′48″W / 41.576866°N 97.513467°W / 41.576866; -97.513467
Country United States
State Nebraska
FoundedJanuary 26, 1856
Named afterPlatte River
SeatColumbus
Largest cityColumbus
Area
 • Total
684.590 sq mi (1,773.08 km2)
 • Land675.118 sq mi (1,748.55 km2)
 • Water9.472 sq mi (24.53 km2)  1.38%
Population
 (2020)
 • Total
34,296
 • Estimate 
(2024)
35,499
 • Density50.800/sq mi (19.614/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Area code402 and 531
Congressional district1st
Websiteplattecounty.ne.gov
• Nebraska county number 71
• Nebraska license plate prefix 10

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 35,499 in 2024, making it the nineth-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).