Outdoor Advertising Billboards for Rent in Sarpy County, Nebraska

Sarpy County is a county located in the U.S. state of Nebraska. As of 2000, the population was 122,595, making it the third most populous county in Nebraska. It is also one of the state's fastest-growing counties, with the 2007 census estimate placing its population at 146,756. Its county seat is Papillion. It is one of five Nebraska counties in the eight-county Omaha-Council Bluffs Metropolitan Statistical Area.

In the Nebraska license plate system, Sarpy County was represented by the prefix 59 (it had the fifty-ninth-largest number of vehicles registered in the county when the license plate system was established in 1922). In 2002, the state discontinued the 1922 system in Sarpy, Douglas and Lancaster counties. This is likely due to their population size since Douglas and Sarpy county border each other and Lincoln is located in Lancaster County.

Demographics

Historical populations
Census	Pop.		%±
1860	1,201		—
1870	2,913		142.5%
1880	4,481		53.8%
1890	6,875		53.4%
1900	9,080		32.1%
1910	9,274		2.1%
1920	9,370		1.0%
1930	10,402		11.0%
1940	10,835		4.2%
1950	15,693		44.8%
1960	31,281		99.3%
1970	63,696		103.6%
1980	86,015		35.0%
1990	102,583		19.3%
2000	122,595		19.5%
Est. 2007	146,756		19.7%
sources:

As of the census of 2000, there were 122,595 people, 43,426 households, and 33,220 families residing in the county. The population density was 510 people per square mile (197/km²). There were 44,981 housing units at an average density of 187 per square mile (72/km²). The racial makeup of the county was 89.18% White, 4.36% Black or African American, 0.42% Native American, 1.90% Asian, 0.09% Pacific Islander, 1.86% from other races, and 2.20% from two or more races. 4.37% of the population were Hispanic or Latino of any race.

There were 43,426 households out of which 43.00% had children under the age of 18 living with them, 63.80% were married couples living together, 9.60% had a female householder with no husband present, and 23.50% were non-families. 18.40% of all households were made up of individuals and 4.70% had someone living alone who was 65 years of age or older. The average household size was 2.79 and the average family size was 3.21.

In the county the population was spread out with 30.50% under the age of 18, 9.40% from 18 to 24, 33.80% from 25 to 44, 19.70% from 45 to 64, and 6.60% who were 65 years of age or older. The median age was 32 years. For every 100 females there were 98.80 males. For every 100 females age 18 and over, there were 96.20 males.

The median income for a household in the county was $53,804, and the median income for a family was $59,723. Males had a median income of $37,230 versus $26,816 for females. The per capita income for the county was $21,985. About 3.10% of families and 4.20% of the population were below the poverty line, including 5.30% of those under age 18 and 3.30% of those age 65 or over.