As of the census of 2010, there were 14,200 people, 4,979 households, and 3,437 families residing in the county. The population density was 24.7 people per square mile. There were 5,810 housing units at an average density of 10 per square mile. The racial makeup of the county was 94.4% White, 1.3% Black or African American, 1.0% Native American, 1.6% Asian, 0.5% Pacific Islander, 3.40% from other races, and 1.2% from two or more races. 21.3% of the population is Hispanic or Latino of any race.

There were 5,188 households out of which 30.5% had children under the age of 18 living with them, 56.6% were married couples living together, 7.4% had a female householder with no husband present, and 31.0% were non-families. 25.8% of all households were made up of individuals and 13.5% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.24.

In the county the population was spread out with 7.2% under the age of 5, 24.5% under the age of 18, and 14.3% who were 65 years of age or older. The median age was 36 years. 49.6% of the county is female and 50.4% male.

The median income for a household in the county was $45,347, and the median income for a family was $54,101. Males had a median income of $36,390 versus $29,515 for females. The per capita income for the county was $20,700. About 9.50% of families and 15.0% of the population were below the poverty line, including 10.8% of those under age 18, and 10.9% age 65 or over.