Richland County Flag

Richland County

State:
Montana
County Seat:
Sidney

Richland County's estimated 2025 population is 11,059 with a growth rate of -0.51% in the past year according to the most recent United States census data. Richland County is the 20th largest county in Montana. The 2010 population was 9,760 and has seen a growth of 13.31% since that time.

11,059
Total Population
5
Population Density (mi²)
20
Population Rank (State)
-57 -0.51%
Annual Population Growth

Richland County Population

Richland County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Richland County includes 90.6% White, and smaller percentages for other race, Native Hawaiian or Pacific Islander, Asian, Black or African American, Native American and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White10,26490.6%
Two or more races6095.38%
Other race2712.39%
Native Hawaiian or Pacific Islander980.87%
Asian310.27%
Black or African American280.25%
Native American280.25%

Richland County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Richland County's average per capita income is $46,544. Household income levels show a median of $69,578. The poverty rate stands at 7.15%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$100,875-
Families$87,353$109,458
Households$69,578$93,356
Non Families$36,750$61,061

$46,544

Average Income

$69,578

Median Household Income

7.15%

Poverty Rate