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Ottawa County is a county located in the U.S. State of Michigan. As of 2000, the population is 238,314. Its county seat is Grand Haven 6.
According to the U.S. Census Bureau, the county has a total area of 4,227 km˛ (1,632 mi˛). 1,465 km˛ (566 mi˛) of it is land and 2,762 km˛ (1,066 mi˛) of it is water. The total area is 65.34% water.
As of the census 2 of 2000, there are 238,314 people, 81,662 households, and 61,328 families residing in the county. The population density is 163/km˛ (421/mi˛). There are 86,856 housing units at an average density of 59/km˛ (154/mi˛). The racial makeup of the county is 91.52% White, 1.05% Black or African American, 0.36% Native American, 2.09% Asian, 0.02% Pacific Islander, 3.48% from other races, and 1.48% from two or more races. 7.00% of the population are Hispanic or Latino of any race.
There are 81,662 households out of which 39.30% have children under the age of 18 living with them, 64.60% are married couples living together, 7.50% have a female householder with no husband present, and 24.90% are non-families. 19.60% of all households are made up of individuals and 7.40% have someone living alone who is 65 years of age or older. The average household size is 2.81 and the average family size is 3.25.
In the county the population is spread out with 28.70% under the age of 18, 11.90% from 18 to 24, 29.30% from 25 to 44, 20.00% from 45 to 64, and 10.10% who are 65 years of age or older. The median age is 32 years. For every 100 females there are 97.00 males. For every 100 females age 18 and over, there are 94.20 males.
The median income for a household in the county is $52,347, and the median income for a family is $59,896. Males have a median income of $42,180 versus $27,706 for females. The per capita income for the county is $21,676. 5.50% of the population and 3.10% of families are below the poverty line. Out of the total population, 4.70% of those under the age of 18 and 4.90% of those 65 and older are living below the poverty line.