Sidney, Montana Demographics & Population 2026
During the 2020–2024 ACS period, Sidney, Montana had a total population of 6,171, the 19th largest city in Montana, with a median household income of $62,538, which is 14% lower than the state average. The poverty rate is 7.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Sidney Quick Facts
How Sidney Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 6,235 | 6,171 | -1.0% |
| Median household income | $62,992 | $62,538 | -0.7% |
| Median home value | $249,100 | $236,900 | -4.9% |
How Sidney Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 29 | National average: 61
Education
Educational Attainment (Adults 25+)
Sidney Rankings in Montana
Explore Montana Rankings
Other Cities in Richland County
Cities Similar to Sidney
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Orchard Homes | 5,588 | $64,904 | $553,700 | 44.4% | 8.7% |
| Lewistown | 6,087 | $48,750 | $198,400 | 17.7% | 20.9% |
| Columbia Falls | 5,615 | $75,766 | $384,400 | 32.1% | 15.2% |
| Laurel | 7,215 | $68,474 | $235,100 | 20.8% | 10.0% |
| Polson | 5,428 | $53,418 | $356,300 | 29.6% | 17.5% |
Population Overview
Sidney is a small city located in Montana, within Richland County. The total population is 6,171. It ranks as the 19th most populous out of 475 Census-designated places in Montana.
Age Demographics
The median age in Sidney is 37.3 years. This is 8% lower than the state median of 40.4 years.
Economy, Income & Housing
The median household income in Sidney is $62,538. This is 14% lower than the state median of $72,509. It is also 23% lower than the national median of $80,734. The poverty rate stands at 7.7%. This is 33% lower than the state poverty rate of 11.5%. The unemployment rate is 3.5%. This is 5% lower than the state rate of 3.6%. The median home value is $236,900. Housing costs are 37% lower than the state median of $375,800. The home-value-to-income ratio is 3.8x. 57.6% of occupied housing units are owner-occupied. This homeownership rate is 17% lower than the state average of 69.2%.
Race & Ethnicity
The largest racial or ethnic group in Sidney is White (non-Hispanic), making up 83.8% of the population. Hispanic or Latino residents account for 8.0%. The Hispanic or Latino population is significantly higher than the state average (8.0% vs 4.6%). The Asian population (0.2%) is well below the state average of 0.8%.
Education
22.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 37% lower than the state rate of 35.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.7%.
Data Sources & Methodology
All demographic data for Sidney, Montana is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Montana state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 475 Census-designated places in Montana. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Sidney, Montana?
Sidney, Montana has a population of 6,171 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sidney, MT?
The median household income in Sidney is $62,538, which is 23% lower than the national median of $80,734.
What is the poverty rate in Sidney, MT?
The poverty rate in Sidney is 7.7%. This means approximately 473 residents live below the federal poverty line.
What is the racial makeup of Sidney, Montana?
Sidney's population is 83.8% White, 0.0% Black, 8.0% Hispanic/Latino, and 0.2% Asian.
What is the median home value in Sidney, MT?
The median home value in Sidney is $236,900. The home-value-to-income ratio is 3.8x.
How educated is Sidney, Montana?
22.0% of adults (25+) in Sidney hold a bachelor's degree or higher, and 3.9% hold a graduate or professional degree.