Mason County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 28,705. The county seat is Ludington.
According to the US Census Bureau, the county has a total area of 1,242 square miles (3,220 km), of which 495 square miles (1,280 km) is land and 747 square miles (1,930 km) (60%) is water.
As of the 2000 United States Census, of 2000, there were 28,274 people, 11,406 households, and 7,881 families in the county. The population density was 57 people per square mile (22/km²). There were 16,063 housing units at an average density of 32 per square mile (13/km²). The racial makeup of the county was 95.84% White, 0.73% Black or African American, 0.78% Native American, 0.28% Asian, 0.02% Pacific Islander, 0.82% from other races, and 1.53% from two or more races. 3.01% of the population were Hispanic or Latino of any race. 24.5% were of German, 10.4% Polish, 8.8% English, 8.5% Irish, 7.7% American and 5.0% Swedish ancestry. 96.0% spoke English and 2.2% Spanish as their first language.
There were 11,406 households out of which 29.70% had children under the age of 18 living with them, 56.40% were married couples living together, 9.20% had a female householder with no husband present, and 30.90% were non-families. 26.50% of all households were made up of individuals and 11.70% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.92.
The county population contained 24.20% under the age of 18, 7.10% from 18 to 24, 26.20% from 25 to 44, 25.80% from 45 to 64, and 16.80% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 97.50 males. For every 100 females age 18 and over, there were 94.40 males.
The median income for a household in the county was $34,704, and the median income for a family was $41,654. Males had a median income of $33,873 versus $22,616 for females. The per capita income for the county was $17,713. About 8.20% of families and 11.00% of the population were below the poverty line, including 16.50% of those under age 18 and 7.00% of those age 65 or over.
Mason County Michigan neighborhoods include: Alaiedon Township, Angell’s Acres, Ash / Lansing, Aurelius Township, Beacon Lake, Beautiful, Columbia Lakes, Columbia St, Eldorado, M36/Sunshine Valley, Mason Manor, Rayner Ponds, Riverwalk, Skate Park, Southwest Mason, Sycamore Creek, The Gardens