Sidney Flag

Sidney

County:
Richland County
County Seat:
Yes
Area (mi²):
3.287
State:
Montana

Sidney is a city located in Richland County, Montana. Sidney has a 2025 population of 5,945. It is also the county seat of Richland County. Sidney is currently declining at a rate of -1.38% annually and its population has decreased by -6.55% since the most recent census, which recorded a population of 6,362 in 2020.

The average household income in Sidney is $97,588 with a poverty rate of 8.63%.The median age in Sidney is 38.9 years: 39.2 years for males, and 38.6 years for females.

5.9K
Total Population
1,808
Density (mi²)
-83 -1.38%
Growth

Sidney Population

Sidney Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Sidney includes 86.13% White, 3.9% other race, and smaller percentages for Native Hawaiian or Pacific Islander, Native American, Asian and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White5,37086.13%
Two or more races4947.92%
Other race2433.9%
Native Hawaiian or Pacific Islander981.57%
Native American190.3%
Asian110.18%

Sidney Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Sidney's average per capita income is $47,681. Household income levels show a median of $62,992. The poverty rate stands at 8.63%.

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$108,470-
Families$86,544$120,511
Households$62,992$97,588
Non Families$36,682$62,669

$47,681

Average Income

$62,992

Median Household Income

8.63%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)