How to make a Population Pyramid

Population Pyramid Construction

Understanding the Population Pyramid

• A population pyramid, also known as an age-sex pyramid, visually represents the distribution of various age groups and genders within a specific population.

• The example used is based on census data from the United States in 2010, illustrating how populations can be represented using either raw numbers or percentages.

Drawing the Population Pyramid

• The vertical y-axis will be drawn in the center of the page, with older age categories at the top and younger ones at the bottom, typically organized in five-year intervals.

• The horizontal x-axis is divided into two sections: one for males (left side) and one for females (right side), both labeled with percentage figures starting from zero where axes intersect.

Scaling and Coloring

• A scale of one centimeter equals one percent is established; this is based on the largest percentage group (3.7% for females aged 45 to 49).