Chelsea is a city in Washtenaw County in the U.S. state of Michigan. The population was 4,944 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 3.68 square miles (9.53 km), of which 3.63 square miles (9.40 km) is land and 0.05 square miles (0.13 km) is water.
As of the census of 2010, there were 4,944 people, 2,224 households, and 1,284 families residing in the city. The population density was 1,362.0 inhabitants per square mile (525.9/km). There were 2,436 housing units at an average density of 671.1 per square mile (259.1/km). The racial makeup of the city was 96.1% White, 0.4% African American, 0.3% Native American, 1.1% Asian, 0.6% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 2.5% of the population.
There were 2,224 households of which 28.1% had children under the age of 18 living with them, 46.2% were married couples living together, 8.8% had a female householder with no husband present, 2.8% had a male householder with no wife present, and 42.3% were non-families. 37.2% of all households were made up of individuals and 21.9% had someone living alone who was 65 years of age or older. The average household size was 2.18 and the average family size was 2.91.
The median age in the city was 43.5 years. 22.7% of residents were under the age of 18; 4.7% were between the ages of 18 and 24; 24% were from 25 to 44; 25.9% were from 45 to 64; and 22.7% were 65 years of age or older. The gender makeup of the city was 45.5% male and 54.5% female.
As of the census of 2000, there were 4,398 people, 1,840 households, and 1,133 families residing in the village. The population density was 1,315.3 per square mile (508.4/km²). There were 1,913 housing units at an average density of 572.1 per square mile (221.1/km²). The racial makeup of the village was 97.14% White, 0.70% African American, 0.27% Native American, 0.48% Asian, 0.07% Pacific Islander, 0.39% from other races, and 0.95% from two or more races. Hispanic or Latino of any race were 0.82% of the population.
There were 1,840 households out of which 29.7% had children under the age of 18 living with them, 48.3% were married couples living together, 10.9% had a female householder with no husband present, and 38.4% were non-families. 35.4% of all households were made up of individuals and 19.7% 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 2.95.
In the village the population was spread out with 23.6% under the age of 18, 5.2% from 18 to 24, 25.0% from 25 to 44, 22.2% from 45 to 64, and 24.0% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 82.9 males. For every 100 females age 18 and over, there were 75.0 males.
The median income for a household in the village was $51,132, and the median income for a family was $72,266. Males had a median income of $50,506 versus $35,579 for females. The per capita income for the village was $27,609. About 2.5% of families and 4.3% of the population were below the poverty line, including 2.9% of those under age 18 and 5.0% of those age 65 or over.