San Mateo Sun

Of the 767,423 people living in San Mateo County in 2019, 50.6 percent (388,095) were women and 49.4 percent (379,328) were men, according to U.S. Census Bureau data obtained by the San Mateo Sun.

Males 18 and over outnumbered females in the same age group by a ratio of 244,787-to-242,255. In the 65 and over age range, there were 68,128 females and 52,749 males.

An agency of the U.S. Federal Statistical System, the Census Bureau is responsible for compiling statistical facts about the American people, places and economy. Data for this story was compiled from the bureau's American Community Survey. Information from the survey helps to determine how federal and state funds are distributed.

Sex and age range	Estimated number	Percent of total
Males 18 and over	244,787	31.9
Females 18 and over	242,255	31.6
Males 65 and over	52,749	6.9
Females 65 and over	68,128	8.9

Source: US Census Bureau