Per the American Community Survey's 2013-2017 estimates, Houston's age distribution was 569,656 under 18; 1,697,680 aged 18 to 20; 1,611,185 aged 21 to 61; 288,654 aged 62 to 64; and 228,460 aged 65 and older. The median age was 32.9, down from 33.5 in 2014; the city's youthfulness has been attributed to an influx of an African American New Great Migration, Hispanic or Latin American, and Asian immigrants into Texas.[115][116][117] For every 100 females, there were 100.3 males.[118]
The Allen brothers—Augustus Chapman and John Kirby—explored town sites on Buffalo Bayou and Galveston Bay. According to historian David McComb, "[T]he brothers, on August 26, 1836, bought from Elizabeth E. Parrott, wife of T.F.L. Parrott and widow of John Austin, the south half of the lower league [2,214-acre (896 ha) tract] granted to her by her late husband. They paid $5,000 total, but only $1,000 of this in cash; notes made up the remainder."[18] Saturday worship service
