The story
2020 census
As of the 2020 census, the county had a population of 856,553 and a median age of 41.4 years. 21.3% of residents were under the age of 18 and 18.7% of residents were 65 years of age or older. For every 100 females there were 94.4 males, and for every 100 females age 18 and over there were 91.7 males age 18 and over.
The racial makeup of the county was 73.3% White (72.2% White, non-Hispanic), 9.5% Black or African American, 0.2% American Indian and Alaska Native, 7.9% Asian, <0.1% Native Hawaiian and Pacific Islander, 2.9% from some other race, and 6.1% from two or more races. Hispanic or Latino residents of any race comprised 6.4% of the population.
96.7% of residents lived in urban areas, while 3.3% lived in rural areas.
There were 328,958 households in the county, of which 30.2% had children under the age of 18 living in them. Of all households, 53.0% were married-couple households, 15.6% were households with a male householder and no spouse or partner present, and 25.6% were households with a female householder and no spouse or partner present. About 26.6% of all households were made up of individuals and 12.2% had someone living alone who was 65 years of age or older.
There were 346,877 housing units, of which 5.2% were vacant. Among occupied housing units, 70.8% were owner-occupied and 29.2% were renter-occupied. The homeowner vacancy rate was 1.1% and the rental vacancy rate was 7.4%.
2010 census
The largest townships/boroughs in Montgomery County include:
From Wikipedia’s article on Montgomery County, Pennsylvania, shared under CC BY-SA 4.0.5