Livingston County is a county in the U.S. state of Michigan. As of the 2010 census, the population was 180,967. It is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area.
According to the US Census Bureau, the county has an area of 585 square miles (1,520 km), of which 565 square miles (1,460 km) is land and 20 square miles (52 km) (3.4%) is water.
As of the 2000 United States Census, of 2010, the county had 180,967 people, 55,384 households, and 43,531 families. The population density was 320 people per square mile (107/km²). There were 58,919 housing units at an average density of 104 per square mile (40/km²). 96.7% of the population were White, 0.8% Asian, 0.4% Black or African American, 0.4% Native American, 0.4% of some other race and 1.3% of two or more races. 1.9% were Hispanic or Latino (of any race). 20.8% were of German, 11.2% Irish, 10.6% English, 10.6% Polish, 6.5% American, 5.2% Italian and 5.1% French, French Canadian or Cajun ancestry. 95.9% spoke English and 1.7% Spanish as their first language.
There were 55,384 households, of which 39.80% had children under the age of 18 living with them, 68.50% were married couples living together, 6.80% had a female householder with no husband present, and 21.40% were non-families. 17.10% of all households were made up of individuals and 5.40% had someone living alone who was 65 years of age or older. The average household size was 2.80 and the average family size was 3.18.
28.80% of the county’s population was under age 18, 6.60% was from age 18 to 24, 31.70% was from age 25 to 44, 24.60% was from age 45 to 64, and 8.30% was age 65 or older. The median age was 36 years. For every 100 females, there were 102.10 males. For every 100 females age 18 and over, there were 99.70 males.
With a median household income of $67,400 (2008 estimate – $72,700) and a median family income of $75,284, Livingston County is one of the highest-income counties in the United States and has the second-highest median income in Michigan (after Oakland). Males had a median income of $54,358 versus $32,073 for females. The county’s per capita income was $28,069. About 2.40% of families and 3.40% of the population were below the poverty line, including 3.60% of those under age 18 and 4.50% of those age 65 or over.
More than 50% of the county’s population resides in the southeastern communities of Brighton Township, Genoa Township, Hamburg Township, Green Oak Township, the Village of Pinckney, Putnam Township and the city of Brighton.
The US Census Bureau in 2000 identified Brighton, Howell and the nearby city of South Lyon to be a contiguously-urbanized area, one of the newest such areas in the United States.