In Connecticut there is no county-level executive or legislative government; the counties determine probate, civil and criminal court boundaries, but little else. Each city or town is responsible for local services such as schools, snow removal, sewers, fire department and police departments. In Connecticut, cities and towns may agree to jointly provide services or even establish a regional school system.
As of the census of 2000, there were 857,183 people, 335,098 households, and 222,505 families residing in the county. The population density was 1,166 people per square mile (450/km²). There were 353,022 housing units at an average density of 480 per square mile (185/km²). The racial makeup of the county was 76.90% White, 11.66% Black or African American, 0.23% Native American, 2.42% Asian, 0.04% Pacific Islander, 6.43% from other races, and 2.31% from two or more races. 11.55% of the population were Hispanic or Latino of any race. 15.2% were of Italian, 11.2% Irish, 9.1% Polish, 6.5% English, 5.7% French and 5.3% German ancestry according to Census 2000. 78.4% spoke English, 10.3% Spanish, 2.6% Polish, 1.9% French and 1.6% Italian as their first language.
There were 335,098 households out of which 31.30% had children under the age of 18 living with them, 49.20% were married couples living together, 13.50% had a female householder with no husband present, and 33.60% were non-families. 27.90% of all households were made up of individuals and 10.70% had someone living alone who was 65 years of age or older. The average household size was 2.48 and the average family size was 3.05.
In the county the population was spread out with 24.60% under the age of 18, 7.80% from 18 to 24, 29.80% from 25 to 44, 23.20% from 45 to 64, and 14.70% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 92.70 males. For every 100 females age 18 and over, there were 89.00 males.
The median income for a household in the county was $50,756, and the median income for a family was $62,144. Males had a median income of $43,985 versus $33,042 for females. The per capita income for the county was $26,047. About 7.10% of families and 9.30% of the population were below the poverty line, including 12.90% of those under age 18 and 7.60% of those age 65 or over.