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Henderson, Illinois
Location of Henderson in Knox County, Illinois
Location of Henderson in Knox County, Illinois
Location of Illinois in the United States
Location of Illinois in the United States
Country United States
State Illinois
County Knox
Township Henderson
Area
 • Total 0.27 sq mi (0.69 km2)
 • Land 0.27 sq mi (0.69 km2)
 • Water 0.00 sq mi (0.00 km2)
Population
 (2020)
 • Total 266
 • Density 1,003.77/sq mi (387.19/km2)
Time zone UTC-6 (CST)
 • Summer (DST) UTC-5 (CDT)
ZIP code
61439
Area code(s) 309
FIPS code 17-34007
Wikimedia Commons Henderson, Illinois

Henderson is a village in Knox County, Illinois, United States. The population was 255 at the 2010 census, down from 319 at the 2000 census. It is part of the Galesburg Micropolitan Statistical Area.

Geography

Post office in henderson,IL
Post office in Henderson, IL circa 2011

Henderson is located at 41°1′26″N 90°21′20″W / 41.02389°N 90.35556°W / 41.02389; -90.35556 (41.023857, -90.355684).

According to the 2010 census, Henderson has a total area of 0.28 square miles (0.73 km2), all land.

Demographics

Historical population
Census Pop.
1880 198
1890 163 −17.7%
1900 170 4.3%
1910 171 0.6%
1920 156 −8.8%
1930 162 3.8%
1940 152 −6.2%
1950 166 9.2%
1960 212 27.7%
1970 210 −0.9%
1980 369 75.7%
1990 290 −21.4%
2000 319 10.0%
2010 255 −20.1%
2020 266 4.3%
U.S. Decennial Census

As of the census of 2000, there were 319 people, 137 households, and 102 families residing in the village. The population density was 1,172.3 people per square mile (456.2/km2). There were 145 housing units at an average density of 532.9 per square mile (207.4/km2). The racial makeup of the village was 97.18% White, 0.94% African American, 0.31% Native American, and 1.57% from two or more races. Hispanic or Latino of any race were 1.88% of the population.

There were 137 households, out of which 20.4% had children under the age of 18 living with them, 62.8% were married couples living together, 8.0% had a female householder with no husband present, and 25.5% were non-families. 21.2% of all households were made up of individuals, and 4.4% 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 2.60.

In the village, the population was spread out, with 15.7% under the age of 18, 7.2% from 18 to 24, 24.1% from 25 to 44, 36.4% from 45 to 64, and 16.6% who were 65 years of age or older. The median age was 47 years. For every 100 females, there were 101.9 males. For every 100 females age 18 and over, there were 102.3 males.

The median income for a household in the village was $33,636, and the median income for a family was $39,583. Males had a median income of $35,313 versus $24,000 for females. The per capita income for the village was $17,114. About 6.3% of families and 7.9% of the population were below the poverty line, including 3.9% of those under age 18 and 13.3% of those age 65 or over.

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