Population Pyramids are used to show the distribution of males and females across age groups. To read a pyramid, first look at the legend to see what is being measured. Next, look at the x-axis to identify the units of measurement, and then up the pyramid and across to the y-axis to identify the age group. The shape of the pyramid indicates the type of population growth that is occurring. This can be indicative of future trends in different parts of the life course for a certain geography.
The purpose of an age pyramid is to show what age groups by sex account for what portion of a population. A trend seen in Florida is the proportion of males in each age group from <5 to 30-34 is higher than the proportion of females in these age groups. However, in the age groups 35-39 through 85+ the proportion of females is higher in each age group. The largest 5-year age cohort is 25-29 for males and 55-59 for females.