Clone of Demographics Data Methods, Limitations, and References
This section contains information on methods, limitations, and references from Demographics in San Mateo County maps.
Age
Methods
- Data were obtained from U.S. Census Bureau’s 2010-2014 American Community Survey 5-year Estimates at American FactFinder.
- Data were mapped using ArcGIS for Desktop and ArcGIS Online.
Limitations
- Approximately 295,000 households are selected to participate in the annual American Community Survey, or less than 1 percent of all households in the U.S.
- Data were estimates based on survey responses, and not actual counts.
- Estimates have some chance of error.
References
Race/Ethnicity
Methods
- Data were obtained from U.S. Census Bureau’s 2010-2014 American Community Survey 5-year Estimates at American FactFinder.
- Data were mapped using ArcGIS for Desktop and ArcGIS Online.
Limitations
- Approximately 295,000 households are selected to participate in the annual American Community Survey, or less than 1 percent of all households in the U.S.
- Data were estimates based on survey responses, and not actual counts.
- Estimates have some chance of error.
References