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Data Dictionary: ACS 2015 (1-Year Estimates)
you are here: choose a survey survey data set table variable details
Data Source: Social Explorer; U.S. Census Bureau
Universe: Total Population
Variable Details
A01004. Median Age by Sex
Universe: Total Population
A01004_001Median Age:
Percent base:
None - percentages not computed
Aggregation method:
None -- No totals are displayed for this variable when multiple geographies are selected
Formula used to compute this variable:
Return_Value = ACS15:B01002001; if (ACS15:B01002001.IsNull) Return_Value.IsNull = true
Variables used in the formula:
ACS15:B01002001
Median Age -- Total
Relevant Documentation:
Excerpt from: Social Explorer; U.S. Census Bureau; 2015 ACS 1-year and 2011-2015 ACS 5-year Data Releases: Technical Documentation.
  2015 ACS 1-year and 2011-2015 ACS 5-year Data Releases: Technical Documentation -> Appendix A: Supplemental Documentation -> 2014 Subject Definitions -> Population Variables -> Age -> Median Age
Median Age
The median age is the age that divides the population into two equal-size groups. Half of the population is older than the median age and half is younger. Median age is based on a standard distribution of the population by single years of age and is shown to the nearest tenth of a year. (See the sections on "Standard Distributions" and "Medians" under "Derived Measures.")