Males had a median income of $105,327 versus $73,083 for females. The per capita income for the borough was $71,612. 5.8% of the population and 2.6% of families were below the poverty line. Out of the total population, 16.3% of those under the age of 18 and 0.0% of those 65 and older were living below the poverty line. Founded in 1902 by the Chartiers Land Company, Rosslyn Farms was developed by William Parrish. The borough derives its name from Roslin, Scotland.