2020 census As of the
2020 census, Columbia City had a population of 1,949. The median age was 51.7 years. 16.0% of residents were under the age of 18 and 28.5% of residents were 65 years of age or older. For every 100 females there were 92.0 males, and for every 100 females age 18 and over there were 92.3 males age 18 and over. There were 808 households in Columbia City, of which 23.8% had children under the age of 18 living in them. Of all households, 60.0% were married-couple households, 11.1% were households with a male householder and no spouse or partner present, and 19.9% were households with a female householder and no spouse or partner present. About 18.2% of all households were made up of individuals and 9.9% had someone living alone who was 65 years of age or older. There were 787 households, of which 26.4% had children under the age of 18 living with them, 64.2% were
married couples living together, 8.3% had a female householder with no husband present, 3.9% had a male householder with no wife present, and 23.6% were non-families. 18.4% of all households were made up of individuals, and 7.9% had someone living alone who was 65 years of age or older. The average household size was 2.47 and the average family size was 2.74. The median age in the city was 48.4 years. 18.6% of residents were under the age of 18; 6.7% were between the ages of 18 and 24; 20.4% were from 25 to 44; 36% were from 45 to 64; and 18.4% were 65 years of age or older. The gender makeup of the city was 48.8% male and 51.2% female.
2000 census As of the census of 2000, there were 1,571 people, 595 households, and 448 families residing in the city. The population density was . There were 640 housing units at an average density of . The racial makeup of the city was 95.61% White, 0.38% African American, 1.34% Native American, 0.70% Asian, 0.51% from other races, and 1.46% from two or more races. Hispanic or Latino of any race were 2.04% of the population. 19.9% were of
German, 11.9%
English, 11.0%
Irish, 7.9%
American, 6.5%
Norwegian and 5.3%
Scottish ancestry according to
Census 2000. There were 595 households, out of which 32.9% had children under the age of 18 living with them, 67.2% were married couples living together, 5.4% had a female householder with no husband present, and 24.7% were non-families. 19.0% of all households were made up of individuals, and 7.6% had someone living alone who was 65 years of age or older. The average household size was 2.63 and the average family size was 2.97. In the city, the population was spread out, with 25.8% under the age of 18, 6.0% from 18 to 24, 25.5% from 25 to 44, 30.6% from 45 to 64, and 12.2% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 105.4 males. For every 100 females age 18 and over, there were 99.0 males. The median income for a household in the city was $59,545, and the median income for a family was $62,596. Males had a median income of $46,964 versus $33,125 for females. The
per capita income for the city was $25,266. About 2.8% of families and 4.5% of the population were below the
poverty line, including 5.1% of those under age 18 and 3.7% of those age 65 or over. Image:Community Hall - Columbia City Oregon.jpg|Community Hall Image:City Hall - Columbia City, Oregon.jpg|City Hall Image:Caples House Museum - Columbia City Oregon.jpg|Caples House Museum ==Education==