Nason is a city in Jefferson County,

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. The population was 199 people as of the 2020 census, making it the least populous incorporated city in the state of Illinois. It is part of the

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Micropolitan Statistical Area.

Geography

Nason is located in southern Jefferson County south of

, the

county seat A county seat is an administrative center, seat of government, or capital city of a county or parish (administrative division), civil parish. The term is in use in five countries: Canada, China, Hungary, Romania, and the United States. An equiva ...

. It sits between the two northern arms of Rend Lake, a reservoir on the

Big Muddy River The Big Muddy River is a river in southern Illinois. It joins the Mississippi River just south of Grand Tower. The Big Muddy has been dammed near Benton, forming Rend Lake. The Big Muddy has a mud bottom for most of its length. Hydrography ...

. According to the 2021 census gazetteer files, Nason has a total area of , all land.

Demographics

As of the 2020 census there were 199 people, 104 households, and 66 families residing in the city. The population density was . There were 111 housing units at an average density of . The racial makeup of the city was 93.47%

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, 0.00%

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, 1.01% Native American, 0.00% Asian, 0.00%

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, 0.50% from other races, and 5.03% from two or more races.

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or Latino of any race were 1.01% of the population. There were 104 households, out of which 18.3% had children under the age of 18 living with them, 38.46% were married couples living together, 9.62% had a female householder with no husband present, and 36.54% were non-families. 32.69% of all households were made up of individuals, and 18.27% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 2.13. The city's age distribution consisted of 15.8% under the age of 18, 5.9% from 18 to 24, 20.8% from 25 to 44, 35.2% from 45 to 64, and 22.2% who were 65 years of age or older. The median age was 51.4 years. For every 100 females, there were 132.6 males. For every 100 females age 18 and over, there were 135.4 males. The median income for a household in the city was $45,833, and the median income for a family was $55,000. Males had a median income of $41,042 versus $30,208 for females. The

per capita income Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such ...

for the city was $23,776. About 10.6% of families and 15.4% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 20.0% of those under age 18 and 14.3% of those age 65 or over.

References

{{authority control Cities in Jefferson County, Illinois Populated places established in 1923 Cities in Illinois