Marion County, Oregon

administration
Marion County Courthouse in Salem
US state :	Oregon
Administrative headquarters :	Salem
Foundation :	1843
Demographics
Residents :	315,335 (2010)
Population density :	102.8 inhabitants / km ²
geography
Total area :	3093 km²
Water surface :	26 km²
map

Website : www.co.marion.or.us

Marion County is a county in the state of Oregon in the United States with 315,335 residents. The county seat is Salem , which is also the capital of Oregon. The county is named after the Revolutionary War general Francis Marion .

geography

The county has an area of 3,093 km²; of which 26 square kilometers (0.85 percent) are water.

history

The county was founded on July 5, 1843 and was originally called Champoeg . On September 3, 1849, the name was changed to its current name, which goes back to the officer of the Continental Army, Francis Marion .

114 buildings and sites in the county are listed on the National Register of Historic Places (NRHP) (as of July 18, 2018).

Demographic data

Population development
Census	Residents	± in%
1850	2749	-
1860	7088	157.8%
1870	9965	40.6%
1880	14,576	46.3%
1890	22,934	57.3%
1900	27,713	20.8%
1910	39,780	43.5%
1920	47,187	18.6%
1930	60,541	28.3%
1940	75,246	24.3%
1950	101,401	34.8%
1960	120,888	19.2%
1970	151,309	25.2%
1980	204,692	35.3%
1990	228.483	11.6%
2000	284,834	24.7%
2010	315,335	10.7%
Before 1900 1900–1990 2000 2010 Marion County's age pyramid (as of 2000)

The Detroit Lake , in the background of Mount Jefferson

The Detroit Dam on Detroit Lake

As of the 2000 census , the county had 284,834 people. There were 101,641 households and 70,437 families. The population density was 93 people per square kilometer. The racial the population was composed of 81.62% white, 0.89% African American, 1.44% Native American, 1.75% Asian, 0.36% residents from the Pacific island area and 10.58% from others ethnic groups; 3.35% were from two or more races. Hispanic or Latino of any race was 17.10% of the population.

Of the 101,641 households, 34.50% had children and adolescents under the age of 18 living with them. 53.70% were married couples living together, 11.00% were single mothers. 30.70% were not families. 24.00% were single households and 9.50% had someone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.19.

For the entire county, the population was composed of 27.40% of residents under 18 years of age, 10.30% between 18 and 24 years of age, 28.70% between 25 and 44 years of age, 21.20% between 45 and 64 years of age 12.40% were 65 years of age or over. The median age was 34 years. For every 100 females there were 101.10 males, for every 100 females aged 18 and over there were 99.50 males.

The median income for a household in the 40,314 USD , and the median income for a family was 46,202 USD. Males had a median income of $ 33,841 versus $ 26,283 for females. The per capita income was $ 18,408. 13.50% of the population and 9.60% of families are below the poverty line. 18.10% of these were under 18 years of age and 7.40% were 65 years of age or older.