There were 343 households out of which 22.2% had children under the age of 18 living with them, 53.9% were married couples living together, 6.7% had a female householder with no husband present, and 37.3% were non-families. 34.4% of all households were made up of individuals and 17.8% had someone living alone who was 65 years of age or older. The average household size was 2.14 and the average family size was 2.72.
In the city the population was spread out with 19.6% under the age of 18, 4.0% from 18 to 24, 21.9% from 25 to 44, 26.6% from 45 to 64, and 27.9% who were 65 years of age or older. The median age was 48 years. For every 100 females there were 95.1 males. For every 100 females age 18 and over, there were 88.3 males.
The median income for a household in the city was $32,667, and the median income for a family was $40,000. Males had a median income of $30,500 versus $21,042 for females. The per capita income for the city was $18,481. About 3.6% of families and 5.4% of the population were below the poverty line, including 5.1% of those under age 18 and 5.1% of those age 65 or over.
Famous former residents include two Nobel Prize winners. During their youth, two-time Nobel-winner Dr. Linus Pauling (1954 Chemistry and 1962 Peace) and Dr. William Parry Murphy (1934 Medicine) lived in Condon. The state airport in Condon is named Pauling Field.