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. It also should be looked at as a pyramid, as the shape 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. For 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.