The Delaware Valley Regional Planning Commission (DVRPC) is an interstate, intercounty and intercity agency that provides comprehensive and coordinated planning for the orderly growth of the Delaware Valley region. As the region's metropolitan planning organization (MPO), the Commission provides technical assistance and services to its member state and local governments, the private sector and the public. Delaware Valley Data is our periodic series of free data bulletins and complementary analytical reports and reference guides. This data bulletin contains information from Census 2000 Profiles of General Demographic Characteristics, issued by the United States Census Bureau in May 2001. All information in this bulletin is derived from the 100-percent data compiled from the "short form" questionnaire filled out by all respondents to the 2000 Census.

This bulletin includes municipal-level data on relationships and household types for DVRPC's extended 28-county data service area. The Commission's extended service area includes the nine DVRPC member counties as well as 19 surrounding counties in Delaware, New Jersey, Maryland and Pennsylvania (see map on page 6). Additional demographic characteristics on age and sex; race and Hispanic origin; and housing tenure and occupancy can be found in Regional Data Bulletins 68, 69 and 71, respectively.

Table 1 summarizes the data included in this bulletin for the nine-county DVRPC region, while Table 2 provides regional and sub-regional totals. Table 3 provides data on relationships as of April 1, 2000, for each minor civil division in the 28-county extended data service area, and Table 4 includes information on household types.

The following variables were selected for this summary:

The Census Bureau defines the above population variables as follows:

Average family size: A measure obtained by dividing the number of people in families by the total number of families (or family householders).

Average household size: A measure obtained by dividing the number of people in households by the total number of households (or householders).

Child: A child includes a son or daughter by birth, a stepchild or an adopted child of the householder, regardless of the child's age or marital status.

Family: A family consists of a householder and one or more persons living in the same household who are related to the householder by birth, marriage or adoption. All persons in a household who are related to the householder are regarded as members of his or her family.

Family household: A family household is defined as a "household including a family". A family household may also include non-relatives living with a family.

Female householder, no husband present: A female maintaining a household with no husband present.

Group quarters: All persons not living in households are classified by the Census Bureau as living in group quarters. Two general categories of persons in group quarters are recognized: (1) institutionalized persons and (2) other persons in group quarters (also referred to as non-institutionalized group quarters).

Household: A household includes all the person who occupy a housing unit. A housing unit is a house, an apartment, a mobile home, a group of rooms or a single room that is occupied (or if vacant, is intended for occupancy) as separate living quarters. Separate living quarters are those in which the occupants live and eat separately from any other persons in the building and which have direct access from the outside of the building or through a common hall. The occupants may be a single family, one person living alone, two or more families living together or any group of related or unrelated persons who share living arrangements. In 100-percent tabulations, the count of households or householders always equals the count of occupied housing units.

Institutionalized and non-institutionalized population: Institutionalized persons include those persons in correctional institutions, nursing homes, psychiatric hospitals, military hospitals, juvenile institutions and schools and/or hospitals for the chronically ill, mentally retarded, physically handicapped and drug and/or alcohol dependent. Non-institutionalized persons include those persons in rooming houses, group homes, religious group quarters, college dormitories, military quarters, agriculture worker dormitories, emergency shelters and other non-household living quarters.

Non-family household: A non-family household is defined as "a household consisting of a person living alone or of a householder living with other unrelated individuals".

Non-relative: Any household member not related to the householder by birth, marriage or adoption.

Other relative: Any household member related to the householder by birth, marriage or adoption but not included specifically in another relationship category.

Own child: A child under 18 years old who is a son or daughter by birth, marriage (a stepchild) or adoption. For 100-percent tabulations, own children consist of all sons/daughters of householders who are under 18 years. For sample data, own children consist of sons/daughters of householders who are under 18 years of age and who have never been married, therefore, numbers of own children of householders may be different in these two tabulations.

Spouse: A person who is married to and living with the householder. This category includes people in formal marriages, as well as people in common-law marriages.

• New Morgan Borough was formed from portions of Robeson and Caernavon townships in Berks County, Pennsylvania.
• Birmingham Township, Delaware County, officially changed its name to Chadds Ford Township in January 1997.
• A dashed line () indicates that the information is not available.
• This data bulletin was created from the latest electronic files available from the Census Bureau and may include data which has been updated from previously published data bulletins.

• "9-county DVRPC region" consists of Bucks, Chester, Delaware, Montgomery and Philadelphia counties in Pennsylvania and Burlington, Camden, Gloucester and Mercer counties in New Jersey.
• "28-county extended data service region" consists of the 9-county DVRPC region and the surrounding 19 counties, which includes portions of Delaware and Maryland.
• "Philadelphia-Wilmington-Atlantic City CMSA" consists of the Philadelphia PMSA region, the Atlantic City -Cape May PMSA, the Vineland-Millville-Bridgeton PMSA, and the Wilmington- Newark PMSA.
• "Philadelphia PMSA" consists of Bucks, Chester, Delaware, Montgomery and Philadelphia counties (PA) and Burlington, Camden, Gloucester and Salem counties (New Jersey). "Atlantic City-Cape May PMSA" consists of Atlantic and Cape May counties (New Jersey). "Trenton PMSA" consists of Mercer County (New Jersey). "Vineland-Millville-Bridgeton PMSA" consists of Cumberland County (New Jersey). "Wilmington-Newark PMSA" consists of New Castle County (Delaware) and Cecil County (Maryland).
• The Office of Management and Budget (OMB) changed their definition of CMSA and PMSA in 1992. Any historical comparison of this data with earlier data should be done with caution.

The remainder of this data bulletin will be available shortly.

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Data bulletin #70 is one of a series of bulletins designed to disseminate information to member state, county and local governments and other interested parties. For more information on Data Bulletins and Analytical Data Reports, please visit the Delaware Valley Regional Planning Commission's website (www.dvrpc.org) or contact DVRPC at the telephone number below.

The Delaware Valley Regional Planning Commission was established in 1965 by interstate compact between Pennsylvania and New Jersey to plan for the orderly growth and development of the region, and to provide a variety of planning and technical assistance services responding to regional issues. DVRPC maintains a significant database for twenty-eight counties encompassing New Jersey, Delaware, Pennsylvania and Maryland. Included in the database are data profiles at the regional, county and municipal level and for other census geography as requested. DVRPC produces a diverse range of services, including demographic and economic data and projections; mapping and aerial photography; computer assisted mapping; geographic information systems; impact studies; and policy and program development.

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