Editing Sidney, Montana (section)

==Demographics==
{{US Census population
|1900= 75
|1910= 345
|1920= 1400
|1930= 2010
|1940= 2978
|1950= 3987
|1960= 4564
|1970= 4543
|1980= 5726
|1990= 5216
|2000= 4774
|2010= 5191
|2020= 6346
|estyear=2023
|estimate=6112
|estref=<ref name="USCensusEst2023">{{cite web|url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-total-cities-and-towns.html |date=September 14, 2024|title=City and Town Population Totals: 2020-2023|publisher=United States Census Bureau|accessdate=September 14, 2024}}</ref>
|align-fn=center
|footnote=source:<ref>Moffatt, Riley.  ''Population History of Western U.S. Cities & Towns, 1850-1990''.  [[Lanham, Maryland|Lanham]]: Scarecrow, 1996, 135.</ref><br>U.S. Decennial Census<ref>{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=Census of Population and Housing|publisher=United States Census Bureau|accessdate=June 4, 2015}}</ref><br>2020 Census<ref name="2020 Census (City)"/>
}}

===2020 census===
{| class="wikitable"
|+'''Sidney, Montana – Racial Composition'''<ref>{{Cite web|title=P2 HISPANIC OR LATINO, AND NOT HISPANIC OR LATINO BY RACE – 2020: DEC Redistricting Data (PL 94-171) – Sidney city, Montana|url=https://data.census.gov/cedsci/table?q=Sidney%20city,%20Montana&t=Race%20and%20Ethnicity&tid=DECENNIALPL2020.P2}}</ref><br>(NH = Non-Hispanic)<br><small>{{nobold|''Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.''}}</small>
!Race
!Number
!Percentage
|-
|[[Non-Hispanic or Latino whites|White]] (NH)
|5,256
|82.8%
|-
|[[Non-Hispanic or Latino African Americans|Black or African American]] (NH)
|43
|0.7%
|-
|[[Native Americans in the United States|Native American]] or [[Alaska Native]] (NH)
|116
|1.8%
|-
|[[Asian Americans|Asian]] (NH)
|96
|1.5%
|-
|[[Pacific Islander Americans|Pacific Islander]] (NH)
|4
|0.1%
|-
|[[Some Other Race]] (NH)
|23
|0.4%
|-
|[[Multiracial Americans|Mixed/Multi-Racial]] (NH)
|387
|6.1%
|-
|[[Hispanic and Latino Americans|Hispanic or Latino]]
|421
|6.6%
|-
|'''Total'''
|'''6,346'''
|'''100.0%'''
|}
As of the [[2020 United States census|2020 census]], there were 6,346 people, 2,720 households, and 1,596 families residing in the city.<ref>{{Cite web|title=US Census Bureau, Table P16: Household Type |url=https://data.census.gov/table?q=Sidney%20city,%20Montana%20p16&y=2020 |access-date=September 14, 2024 |publisher=United States Census Bureau}}</ref> The [[population density]] was {{convert|1931.8|PD/sqmi|PD/km2|1}}. There were 3,087 housing units. The racial makeup of the city was 85.6% [[White (U.S. Census)|White]], 0.7% [[African American (U.S. Census)|African American]], 2.0% [[Native American (U.S. Census)|Native American]], 1.5% [[Asian (U.S. Census)|Asian]], 0.1% [[Race (U.S. Census)|Pacific Islander]], 1.9% from [[Race and ethnicity in the United States census|some other races]] and 8.3% from [[Multiracial Americans|two or more races]]. [[Hispanic and Latino Americans|Hispanic or Latino]] of any race were 6.6% of the population.<ref>{{Cite web|title=How many people live in Sidney city, Montana |url=https://data.usatoday.com/census/total-population/total-population-change/sidney-city-montana/160-3067900/ |access-date=September 14, 2024 |publisher=USA Today}}</ref>

===2010 census===
As of the [[2010 United States census|2010 census]], there were 5,191 people, 2,304 households, and 1,378 families residing in the city. The population density was {{convert|1951.7|PD/sqmi|PD/km2|1}}. There were 2,467 housing units at an average density of {{convert|927.4|/sqmi|/km2|1}}. The racial makeup of the city was 94.9% [[White (U.S. Census)|White]], 0.1% [[African American (U.S. Census)|African American]], 1.8% [[Native American (U.S. Census)|Native American]], 0.4% [[Asian (U.S. Census)|Asian]], 0.7% from [[Race (U.S. Census)|other races]], and 2.2% from two or more races. [[Hispanic and Latino Americans|Hispanic or Latino]] of any race were 3.4% of the population.

There were 2,304 households, of which 28.5% had children under the age of 18 living with them, 46.0% were [[Marriage|married couples]] living together, 8.6% had a female householder with no husband present, 5.2% had a male householder with no wife present, and 40.2% were non-families. 33.7% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.85.

The median age in the city was 39.3 years. 23.3% of residents were under the age of 18; 8.2% were between the ages of 18 and 24; 24.7% were from 25 to 44; 29% were from 45 to 64; and 14.8% were 65 years of age or older. The gender makeup of the city was 50.6% male and 49.4% female.

===2000 census===
As of the [[2000 United States census|2000 census]], there were 4,774 people, 2,006 households, and 1,271 families residing in the city. The population density was {{convert|2125.3|PD/sqmi|PD/km2|sp=us|adj=off}}. There were 2,393 housing units at an average density of {{convert|1065.3|/sqmi|/km2|sp=us|adj=off}}. The racial makeup of the city was 95.81% [[White (U.S. Census)|White]], 0.10% [[African American (U.S. Census)|African American]], 1.89% [[Native American (U.S. Census)|Native American]], 0.31% [[Asian (U.S. Census)|Asian]], 1.01% from [[Race (United States Census)|other races]], and 0.88% from two or more races. [[Hispanic and Latino Americans|Hispanic or Latino]] of any race were 2.43% of the population.

There were 2,006 households, out of which 31.8% had children under the age of 18 living with them, 49.8% were [[Marriage|married couples]] living together, 9.9% had a female householder with no husband present, and 36.6% were non-families. 33.0% of all households were made up of individuals, and 15.3% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 2.98.

In the city, the population was spread out, with 26.7% under the age of 18, 7.1% from 18 to 24, 26.6% from 25 to 44, 21.8% from 45 to 64, and 18.0% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 92.3 males. For every 100 females age 18 and over, there were 85.8 males.

The median income for a household in the city was $32,109, and the median income for a family was $38,992. Males had a median income of $30,347 versus $18,517 for females. The [[per capita income]] for the city was $16,911. About 8.5% of families and 12.7% of the population were below the [[poverty line]], including 17.1% of those under age 18 and 8.7% of those age 65 or over.