Demographic D.13 Proportion of families with children under 18 years old
| Families in San Francisco | N | % |
|---|---|---|
| 160,443 | 100.0% | |
| With children | 64,469 | 40.2% |
| Without children | 95,974 | 59.8% |
| Families with children in San Francisco | N | % |
|---|---|---|
| 64,469 | 100.0% | |
| Female-headed with own children | 10,820 | 16.8% |
| Male-headed with own children | 3,026 | 4.7% |
Data Source
U.S. Census 2000, Geolytics software. Census variables used: ‘Total families and subfamilies with own children' (FFH0D), ‘Male-headed families with own children under 18 years old' (MHWKID0), ‘Female-headed families with own children under 18 years old' (FHWKID0). Summary File 3, Table P12.Map and table created by San Francisco Department of Public Health, Environmental Health Section using ArcGIS software.
Map data is presented at the level of the census tract. The map also includes planning neighborhood names, in the vicinity of their corresponding census tracts.
Table data is presented by planning neighborhood. Planning neighborhoods are larger geographic areas then census tracts. SF DPH used ArcGIS software and a 'centroids within' methodology to convert census tracts to geographic mean center points. We then assigned census tracts to planning neighborhoods based on the spatial location of those geographic mean center points and calculated the planning neighborhood totals for the table.
Detailed information regarding census data, geographic units of analysis, their definitions, and their boundaries can be found in the HDMT at the following links:
http://www.thehdmt.org/etc/Geographic_Units_of_Analysis.September_2009.pdf
http://www.thehdmt.org/data_map_methods.php
Explanation and Limitations
"Families" as reported in the above tables and maps combines the concepts of "families" and "subfamilies" as recorded by the U.S. Census. The U.S. Census distinguishes between families and subfamilies based on who owns, rents or maintains the household.
A family is a group of two people or more related by birth, marriage, or adoption and residing together (one of whom is the householder - the adult who owns, rents or otherwise maintains the home).
A subfamily is a married couple with or without children, or a single parent with one or more own never-married children under 18 years old. A subfamily does not maintain their own household, but lives in the home of someone else.
Male-headed or female-headed means no spouse is present in the household. Percent of families with a single parent in each neighborhood could therefore be calculated by summing % Male-headed families and % Female-headed families from the above tables.
These data should be interpreted cautiously. Given the inability of same-sex couples to marry and the definition of "family", it is not clear to what extent these data reflect cohabitating two-parent same sex families with children. Same-sex cohabitating couples are not coded as "spouse" in the U.S. Census, but rather as "unmarried partners." In San Francisco, there is a high percentage of two-parent same sex families that for legal reasons may not be acknowledged by the U.S. Census as a "family" or "subfamily." For more information, see Technical Note on Same-Sex Unmarried Partner Data From the 1990 and 2000 Censuses at http://www.census.gov/sdc/www/datanote1pums.txt