Population Pyramids

Demographers use population pyramids to study population composition or structure.

AP Human Geography - Damon - 2016

Pyramids Illustrate Age & Gender Composition / Structure

Not Only Do The Overall Populations Of These 3 Countries

Differ …

Their compositions / structures differ too

Age-gender groups

are called cohorts.

Your cohort

Baby Boom 1946-1964

Baby Boomlet 1982-1995

http://www.washingtontimes.com/news/2014/may/28/us-birthrate-plummets-to-record-low/?page=all

Racial and Ethnic Trends?

Your Population Pyramids

Youth Bulge and Aging Populations: Both Present Challenges

http://www.foreignpolicy.com/articles/2011/01/27/the_arab_world_s_youth_army

Animated Population Pyramid 1950 to 2050 - China

When Did the One-Child Policy Go Into Effect?

Population Pyramids Reflecting 4 Stages of Demographic Transition

Thailand’s Demographic Transition

AIDS Impacted Populations

Mystery Pyramids!

United Arab Emirates