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The total population of Gallatin County is estimated to be 119,685 with 62,534 males (52.25%) and 57,151 females (47.75%). There are 5,383 less females than males in Gallatin County.
The median household income in Gallatin County was $82,374 in 2021, which marked an an increase of 2,914(3.67%) from $79,460 in 2020. This income is 110.41% 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, Gallatin County sees its highest median household income among householders in the age group of 45 to 64 years old, at $98,191. Overall, the median household income for the county of Gallatin County stands at $83,064.
In Gallatin County, the median income for all workers aged 15 years and older, regardless of work hours, was $49,628 for males and $30,435 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $66,919 for males and $52,862 for females.
In Gallatin County, the demographic landscape is diverse, spanning 4 distinct racial categories among households. Among these, American Indian and Alaska Native households have the highest median household income at $86,389, while Some Other Race households represent the opposite end with the lowest median household income of $32,312.
In 2022, the population of Gallatin County was 124,857, a 1.47% increase year-by-year from 2021. Previously, in 2021, Gallatin County's population was 123,051, an increase of 2.90% compared to a population of 119,585 in 2020.
The median age in Gallatin County, MT is 33.7, as per 2021 ACS 5-Year Estimates. Of the total population, 16.64% were under the age of 15, 27.66% aged 15 to 29, 43.05% aged 30 to 64, 11.57% aged 65 to 84, and 1.08% were 85 years of age and older.
Racial distribution of Gallatin County population: 92.14% are White, 0.41% are Black or African American, 0.87% are American Indian and Alaska Native, 1.29% are Asian, 0% are Native Hawaiian and other Pacific Islander, 1.13% are some other race and 4.15% are multiracial.