Gladstone is a city in Delta County in the U.S. state of Michigan. First settled in 1877, Gladstone’s original name was Minnewasca. The population was 4,973 at the 2010 census.
The city is on a small projection into the Little Bay de Noc, which opens onto Green Bay on Lake Michigan.
According to the United States Census Bureau, the city has a total area of 7.92 square miles (20.51 km), of which 5.00 square miles (12.95 km) is land and 2.92 square miles (7.56 km) is water.
As of the census of 2010, there were 4,973 people, 2,182 households, and 1,374 families residing in the city. The population density was 994.6 inhabitants per square mile (384.0/km). There were 2,431 housing units at an average density of 486.2 per square mile (187.7/km). The racial makeup of the city was 95.4% White, 0.2% African American, 1.9% Native American, 0.3% Asian, 0.3% from other races, and 1.8% from two or more races. Hispanic or Latino of any race were 1.0% of the population.
There were 2,182 households of which 27.9% had children under the age of 18 living with them, 49.5% were married couples living together, 9.3% had a female householder with no husband present, 4.1% had a male householder with no wife present, and 37.0% were non-families. 32.4% of all households were made up of individuals and 17.4% had someone living alone who was 65 years of age or older. The average household size was 2.27 and the average family size was 2.84.
The median age in the city was 43.6 years. 22.7% of residents were under the age of 18; 6.5% were between the ages of 18 and 24; 22.3% were from 25 to 44; 27.5% were from 45 to 64; and 21.1% were 65 years of age or older. The gender makeup of the city was 47.7% male and 52.3% female.
As of the census of 2000, there were 5,032 people, 2,126 households, and 1,392 families residing in the city. The population density was 1,015.2 per square mile (391.7/km²). There were 2,289 housing units at an average density of 461.8 per square mile (178.2/km²). The racial makeup of the city was 96.76% White, 0.14% African American, 1.47% Native American, 0.22% Asian, 0.08% Pacific Islander, 0.04% from other races, and 1.29% from two or more races. Hispanic or Latino of any race were 0.42% of the population. 14.3% were of French, 14.0% German, 12.2% Swedish, 10.3% French Canadian, 6.1% English, 5.2% Irish and 5.0% Belgian ancestry according to Census 2000. 99.5% spoke English as their first language.
There were 2,126 households out of which 29.7% had children under the age of 18 living with them, 52.6% were married couples living together, 9.9% had a female householder with no husband present, and 34.5% were non-families. 30.8% of all households were made up of individuals and 16.1% had someone living alone who was 65 years of age or older. The average household size was 2.36 and the average family size was 2.94.
In the city, the population was spread out with 24.9% under the age of 18, 7.3% from 18 to 24, 25.7% from 25 to 44, 23.1% from 45 to 64, and 19.0% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 90.6 males. For every 100 females age 18 and over, there were 87.6 males.
The median income for a household in the city was $34,328, and the median income for a family was $47,899. Males had a median income of $43,400 versus $25,662 for females. The per capita income for the city was $17,973. About 7.8% of families and 10.2% of the population were below the poverty line, including 13.9% of those under age 18 and 9.5% of those age 65 or over.