Polk Times

Polk County residents have a median age of 40-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 Polk 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	37	41
Asian	42	46
Black or African American	31	35
Hispanic or Latino	30	31
White	46	47
Native Hawaiian and Other Pacific Islander	20	35
Some other race	31	31
Multiracial	28	29