Cass County, Nebraska

Cass County, Nebraska
Cass County Courthouse in Plattsmouth
Location in the U.S. state of Nebraska
Nebraska's location in the U.S.
Founded	1855
Named for	Lewis Cass
Seat	Plattsmouth
Largest city	Plattsmouth
Area
• Total	566 sq mi (1,466 km2)
• Land	557 sq mi (1,443 km2)
• Water	8.4 sq mi (22 km2), 1.5%
Population
• (2010)	25,241
• Density	45/sq mi (17/km²)
Congressional district	1st
Time zone	Central: UTC-6/-5
Website	www.cassne.org

Cass County is a county in the U.S. state of Nebraska. As of the 2010 census, the population was 25,241. Its county seat is Plattsmouth. The county was formed in 1855 and named after General Lewis Cass.

Cass County is included in the Omaha-Council Bluffs, NE-IA Metropolitan Statistical Area.

In the Nebraska license plate system, Cass County is represented by the prefix 20 (it had the twentieth-largest number of vehicles registered in the county when the license plate system was established in 1922).

According to the U.S. Census Bureau, the county has an area of 566 square miles (1,470 km²), of which 557 square miles (1,440 km²) is land and 8.4 square miles (22 km²) (1.5%) is water.

Due to its proximity to Cass County, Iowa, and because both of those counties receive most of their broadcasts from Omaha, Nebraska, references to 'Cass County' must be frequently disambiguated, or result in confusion.

As of the census of 2000, there were 24,334 people, 9,161 households, and 6,806 families residing in the county. The population density was 44 people per square mile (17/km²). There were 10,179 housing units at an average density of 18 per square mile (7/km²). The racial makeup of the county was 97.89% White, 0.18% Black or African American, 0.30% Native American, 0.35% Asian, 0.02% Pacific Islander, 0.35% from other races, and 0.92% from two or more races. 1.46% of the population were Hispanic or Latino of any race. 39.4% were of German, 9.6% American, 8.8% Irish and 7.9% English ancestry according to Census 2000.