The average household size was 2.43 and the average family size was 3.01. In the city, the population was spread out with 26.0% under the age of 18, 7.5% from 18 to 24, 28.3% from 25 to 44, 23.9% from 45 to 64, and 14.2% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 89.9 males. For every 100 females age 18 and over, there were 84.3 males. The median income for a household in the city was $33,304, and the median income for a family was $38,438. Males had a median income of $29,762 versus $21,694 for females. The per capita income for the city was $16,413. 13.7% of the population and 11.6% of families were below the poverty line. Out of the total population, 15.6% of those under the age of 18 and 11.7% of those 65 and older were living below the poverty line. Waveland is served by the Bay St. Louis-Waveland School District.