2020 census As of the
2020 census, there were 1,264,817 people and 555,988 households residing in the county, along with 309,691 families. The population density was . The median age was 40.5 years. 20.2% of residents were under the age of 18, 5.3% were under 5 years of age, and 18.9% of residents were 65 years of age or older. For every 100 females there were 91.6 males, and for every 100 females age 18 and over there were 88.7 males age 18 and over. 99.4% of residents lived in urban areas, while 0.6% lived in rural areas. Of those households, 24.6% had children under the age of 18 living in them. Of all households, 34.4% were married-couple households, 22.9% were households with a male householder and no spouse or partner present, and 35.8% were households with a female householder and no spouse or partner present. About 37.4% of all households were made up of individuals and 14.3% had someone living alone who was 65 years of age or older. There were 615,825 housing units, of which 9.7% were vacant. Among occupied housing units, 57.5% were owner-occupied and 42.5% were renter-occupied. The homeowner vacancy rate was 1.5% and the rental vacancy rate was 8.8%.
2010 census ) As of the
2010 census, there were 1,280,122 people, 571,457 households, and 319,996 families were residing in the county. The
population density was . The 621,763 housing units averaged . The
racial makeup of the county was 63.6% White, 29.7% African American, 0.2% Native American, 2.6% Asian (0.9% Indian, 0.7% Chinese, 0.3% Filipino, 0.2% Korean, 0.2% Vietnamese, 0.1% Japanese), 1.8% from other races, and 2.1% from two or more races. About 4.8% of the population were Hispanics or Latinos of any race (3.1% Puerto Rican, 0.7% Mexican, 0.1% Dominican, 0.1% Guatemalan). Further, 16.5% were of
German, 12.8%
Irish, 8.8%
Italian, 8.1%
Polish, 5.9%
English, 3.7%
Slovak, and 3.1%
Hungarian heritage. Sizable numbers of
Russians (1.7%),
French, (1.4%),
Arabs (1.4%),
Ukrainians (1.2%), and
Greeks (0.7%) were residing in the county; as their first language, 88.4% spoke
English, 3.7%
Spanish, and 4.9% some other Indo-European language. In addition, 7.3% of the population were foreign-born (of which 44.4% were born in Europe, 36.3% in Asia, and 12.1% in Latin America). Of the 571,457 households, 28.5% had children under 18 living with them, 42.4% were married couples living together, 15.7% had a female householder with no husband present, and 37.9% were not families. About 32.8% of all households consisted of single individuals, and 12.1% consisted of someone living alone who was 65 or older. The average household size was 2.39, and the average family size was 3.06. The age distribution in the county was as follows: 25.0% under 18, 8.0% between 18 and 24, 29.3% between 25 and 44, 22.2% between 45 and 64, and 15.6% who were 65 or older. The median age was 37 years old. For every 100 females, there were 89.5 males. For every 100 females age 18 and over, there were 85.2 males. The median income in the county was $43,603 for a household and $58,631 and for a family. The county's
per capita income was $26,263. About 10.3% of families, 19.4% of those under age 18, and 9.3% of those age 65 or over, and 13.1% of the population as a whole was living below the
poverty line. ==Government and politics==