York County

2020 census

As of the 2020 census, the county had a population of 456,438. The median age was 41.4 years. 21.9% of residents were under the age of 18 and 18.4% of residents were 65 years of age or older. For every 100 females there were 97.4 males, and for every 100 females age 18 and over there were 95.0 males age 18 and over.

The racial makeup of the county was 81.8% White, 6.1% Black or African American, 0.2% American Indian and Alaska Native, 1.5% Asian, <0.1% Native Hawaiian and Pacific Islander, 4.1% from some other race, and 6.3% from two or more races. Hispanic or Latino residents of any race comprised 8.6% of the population.

71.5% of residents lived in urban areas, while 28.5% lived in rural areas.

There were 177,553 households in the county, of which 30.0% had children under the age of 18 living in them. Of all households, 51.9% were married-couple households, 16.5% were households with a male householder and no spouse or partner present, and 23.6% were households with a female householder and no spouse or partner present. About 24.9% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older.

There were 187,187 housing units, of which 5.1% were vacant. Among occupied housing units, 73.6% were owner-occupied and 26.4% were renter-occupied. The homeowner vacancy rate was 1.2% and the rental vacancy rate was 6.5%.

2000 census

As of the 2000 census, there were 381,751 people, 148,219 households, and 105,531 families residing in the county. The population density was 422 people per square mile (163 people/km2). There were 156,720 housing units at an average density of 173 units per square mile (67/km2). The racial makeup of the county was 92.76% White, 3.69% African American, 0.18% Native American, 0.86% Asian, 0.03% Pacific Islander, 1.39% from other races, and 1.10% from two or more races. Hispanic or Latino people of any race were 2.96% of the population. 42.0% were of German, 12.6% American, 7.7% Irish, 6.4% English and 5.1% Italian ancestry. 94.8% spoke English and 2.9% Spanish as their first language.

There were 148,219 households, out of which 32.50% had children under the age of 18 living with them, 58.30% were married couples living together, 9.00% had a female householder with no husband present, and 28.80% were non-families. 23.30% of all households were made up of individuals, and 9.20% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 2.98.

In the county, the population was spread out, with 24.60% under the age of 18, 7.50% from 18 to 24, 30.30% from 25 to 44, 24.00% from 45 to 64, and 13.50% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 96.70 males. For every 100 females age 18 and over, there were 93.80 males.