Estimates of population characteristics such as the population distributions by age, sex, marital status, race, and Hispanic origin follow a similar top-down bottom-up process. At the block group unit of analysis, the latest and best information from the Census Bureau’s American Community Survey (ACS) – the largest household survey in the US – is integrated with Census 2010 data to produce timely, accurate small-area estimates. Population characteristics are estimated using demographic estimation and projection models to achieve a preliminary set of estimates which are then reconciled to top-down estimates using iterative proportion fitting.
Population data is provided into 3 bundles each for Census 2010 (2k), Five-year (5y) projections, Census 2010 dataset (by), and Current year (cy) estimates dataset, wherever applicable include different variables for different dataset bundle which are listed below:
Dataset #1
- Race
- Hispanic or Latino
- Hispanic or Latino Origin by Race
- Sex by Age
- Sex by Age for the Population Under 20 Years
- Households
- Population in Households
- Average Household Size
- Group Quarters Population by Group Quarters Type
- Household Size
- Language Spoken at Home
- Ancestry (Collapsed Table)
- Daytime Population
Dataset #2
- Total Population
- Ancestry (Detailed Table)
Dataset #3
- Types of Health Insurance Coverage by Age