As of the census of 2006, there were 53,100 people residing in the county. The population density was 51/mi.
The racial makeup of the county was 88.46% White, 1.19% Black or African American, 3.72% Native American, 1.05% Asian, 0.45% Pacific Islander, 2.10% from other races, and 3.03% from two or more races.
4.78% of the population were Hispanic or Latino of any race. 16.7% were of German, 9.9% Irish, 9.8% English, 8.6% United States or American and 6.8% Norwegian ancestry .
The median income for a household in the county was $39,586, and the median income for a family was $44,246. Males had a median income of $37,007 versus $25,817 for females. The per capita income for the county was $18,056. About 12.20% of the population were below the poverty line.
Learn more about Mason County, the cities and towns.