Population by Age
Age is based upon date of birth information as of the most recent decennial census. Updates and projections to age are generated by cohort aging methods.
These data are reported in multiple ways, including:
Detailed age groupings
Phase of Life
School Aged Population
Outreach Opportunities (Children, Preschool, Youth and Young Adult)
Population by Average Age
Population by Phase of Life
Phase of Life re-categorizes the age detail data into seven life stage characteristics. These phase categories attempt to relate age periods to life experiences common to the age ranges.
Categories reported:
Before Formal Schooling: Ages 0 to 4
Required Formal Schooling: Ages 5 to 17
College/Career Starts: Ages 18 to 24
Singles and Young Families: Ages 25 to 34
Families and Empty Nesters: Ages 35 to 54
Enrichment Years Singles/Couples: Ages 55 to 64
Retirement Opportunities: Age 65 and over