Demographic D.11 Proportion of married and unmarried
Data Source
U.S. Census 2000, Geolytics software. Census variables used: ‘Married females, spouse present 15+ years old‘ (FMARSPP0), ‘Married males, spouse present 15+ years old' (MMARSPP0), ‘Total persons 15+ years old' (PERS15P0). Summary File 3, Table P18.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
Percent of married persons was calculated by dividing the number of married females and males 15+ years old with spouse present by the total population of persons 15+ years old. Married males and females 15+ years old with spouse absent were not included in the numerator.
Percent of unmarried persons was calculated by dividing the number of males and females 15+ years old whom have never been married or whom are divorced by the total population of persons 15+ years old. Widowed males and females 15+ years old were not included in the numerator.