As of the census of 2000, there are 157 people, 66 households, and 44 families residing in the city. The population density is 356.6/km² (937.8/mi²). There are 76 housing units at an average density of 172.6/km² (454.0/mi²). The racial makeup of the city is 97.45% White, 0.00% African American, 2.55% Native American, 0.00% Asian, 0.00% Pacific Islander, 0.00% from other races, and 0.00% from two or more races. 0.00% of the population are Hispanic or Latino of any race.
There are 66 households out of which 31.8% have children under the age of 18 living with them, 56.1% are married couples living together, 6.1% have a female householder with no husband present, and 33.3% are non-families. 33.3% of all households are made up of individuals and 16.7% have someone living alone who is 65 years of age or older. The average household size is 2.38 and the average family size is 3.02.
In the city the population is spread out with 26.1% under the age of 18, 4.5% from 18 to 24, 33.8% from 25 to 44, 14.6% from 45 to 64, and 21.0% who are 65 years of age or older. The median age is 37 years. For every 100 females there are 137.9 males. For every 100 females age 18 and over, there are 127.5 males.
The median income for a household in the city is $35,000, and the median income for a family is $43,750. Males have a median income of $27,679 versus $20,500 for females. The per capita income for the city is $15,507. 18.5% of the population and 14.6% of families are below the poverty line. Out of the total people living in poverty, 32.1% are under the age of 18 and 8.1% are 65 or older.
Galesburg is the home to the world's second tallest currently standing structure, the KXJB-TV mast at 627 meters. The worlds tallest standing structure is 628 meters in Blanchard, North Dakota, the KVLY-TV mast.