St. Charles Times

St. Charles County residents have a median age of 39-years-old as of 2021, according to US Census Data.

Median ages divide a population into two equally sized groups, rather than the average which takes all the ages of St. Charles County residents and divides it by the number of residents.

OurWorldinData.org, an online project tracking global data and trends, says cities, states, countries and continents with higher median ages typically do better economically and residents earn higher wages than developing countries.

The median age of a United States resident has risen from 29.5-years-old in 1960 to 38.4-years-old in 2019. It has risen fairly consistently by two years every decade since the 1970's.

Ethnicity	Median Age - Male	Median Age - Female
American Indian and Alaska Native	53	33
Asian	36	36
Black or African American	35	39
Hispanic or Latino	27	28
White	39	42
Native Hawaiian and Other Pacific Islander	6	44
Some other race	32	22
Multiracial	21	22