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The total population of Jefferson County is estimated to be 226,984 with 113,749 males (50.11%) and 113,235 females (49.89%). There are 514 less females than males in Jefferson County.
The median household income in Jefferson County was $77,053 in 2021, which marked an an increase of 446(0.58%) from $76,607 in 2020. This income is 103.28% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Jefferson County sees its highest median household income among householders in the age group of 25 to 44 years old, at $97,958. Overall, the median household income for the county of Jefferson County stands at $78,568.
In Jefferson County, the median income for all workers aged 15 years and older, regardless of work hours, was $48,991 for males and $29,213 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $65,999 for males and $47,163 for females.
In Jefferson County, the demographic landscape is diverse, spanning 5 distinct racial categories among households. Among these, American Indian and Alaska Native households have the highest median household income at $123,240, while Black or African American households represent the opposite end with the lowest median household income of $47,461.
In 2022, the population of Jefferson County was 229,336, a 0.62% increase year-by-year from 2021. Previously, in 2021, Jefferson County's population was 227,934, an increase of 0.44% compared to a population of 226,927 in 2020.
The median age in Jefferson County, MO is 39.9, as per 2021 ACS 5-Year Estimates. Of the total population, 19.08% were under the age of 15, 17.46% aged 15 to 29, 48.24% aged 30 to 64, 13.77% aged 65 to 84, and 1.45% were 85 years of age and older.
Racial distribution of Jefferson County population: 92.26% are White, 0.89% are Black or African American, 0.13% are American Indian and Alaska Native, 0.81% are Asian, 0.02% are Native Hawaiian and other Pacific Islander, 0.43% are some other race and 5.47% are multiracial.