Editing Slope County, North Dakota (section)

==Demographics==
{{US Census population
|1920= 4940
|1930= 4150
|1940= 2932
|1950= 2315
|1960= 1893
|1970= 1484
|1980= 1157
|1990= 907
|2000= 767
|2010= 727
|2020= 706
|estyear=2022
|estimate=672
|estref=<ref name="USCensusEst2022">{{cite web|url=https://www.census.gov/data/tables/time-series/demo/popest/2020s-counties-total.html|title=Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2022|access-date=April 4, 2023}}</ref>
|align-fn=center
|footnote=U.S. Decennial Census<ref>{{cite web|url=https://www.census.gov/programs-surveys/decennial-census.html|title=United States Decennial Census|publisher=United States Census Bureau|access-date=February 1, 2015}}</ref><br/>1790-1960<ref>{{cite web|url=http://mapserver.lib.virginia.edu|title=Historical Census Browser|publisher=University of Virginia Library|access-date=February 1, 2015}}</ref> 1900-1990<ref>{{cite web|url=https://www.census.gov/population/cencounts/nd190090.txt|title=Population of Counties by Decennial Census: 1900 to 1990|publisher=United States Census Bureau|editor-last=Forstall|editor-first=Richard L.|date=April 20, 1995|access-date=February 1, 2015}}</ref><br/>1990-2000<ref>{{cite web|url=https://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-url=https://web.archive.org/web/20100327165705/http://www.census.gov/population/www/cen2000/briefs/phc-t4/tables/tab02.pdf |archive-date=March 27, 2010 |url-status=live|title=Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000|publisher=United States Census Bureau|date=April 2, 2001|access-date=February 1, 2015}}</ref> 2010-2020<ref name="QF"/>
}}

===2020 census===
As of the [[census]] of 2020, there were 706 people.

===2010 census===
As of the [[census]] of 2010, there were 727 people, 326 households, and 224 families in the county. The population density was {{convert|0.60|/mi2|/km2|disp=preunit|people&nbsp;|people|}}. There were 436 housing units at an average density of {{convert|0.36|/mi2|/km2|adj=pre|units&nbsp;}}. The racial makeup of the county was 97.5% white, 2.2% American Indian, 0.0% from other races, and 0.3% from two or more races. Those of Hispanic or Latino origin made up 1.7% of the population. In terms of ancestry, 53.9% were of German, 30.7% Norwegian, 9.9% English, 7.4% Swedish, 5.5% [[Polish Americans|Polish]] and 2.8% American ancestry.

Of the 326 households, 22.4% had children under the age of 18 living with them, 60.7% were married couples living together, 4.9% had a female householder with no husband present, 31.3% were non-families, and 29.4% of all households were made up of individuals. The average household size was 2.23 and the average family size was 2.74. The median age was 49.2 years.

The median income for a household in the county was $43,625 and the median income for a family was $55,833. Males had a median income of $36,458 versus $31,172 for females. The per capita income for the county was $24,824. About 6.8% of families and 10.5% of the population were below the [[poverty line]], including 9.3% of those under age 18 and 11.7% of those age 65 or over.

Slope County has the highest decline from its peak population of all US counties.

===Population by decade===
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  bar:1960 from: 0 till:1893
  bar:1970 from: 0 till:1484
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