2020 census As of the
2020 census, Shenandoah had a population of 4,925, with 2,241 households and 1,236 families residing in the city. The
population density was 1,319.4 inhabitants per square mile (509.4/km2). There were 2,536 housing units at an average density of 679.4 per square mile (262.3/km2), of which 11.6% were vacant. The homeowner vacancy rate was 3.8% and the rental vacancy rate was 9.5%. The median age was 44.3 years. Of residents, 23.3% were under the age of 20 (including 21.4% under 18), 5.1% were between the ages of 20 and 24, 22.4% were from 25 to 44, 24.5% were from 45 to 64, and 24.8% were 65 years of age or older. The gender makeup of the city was 49.4% male and 50.6% female; for every 100 females, there were 97.7 males, and for every 100 females age 18 and over, there were 95.9 males age 18 and over.
2010 census At the
2010 census there were 5,150 people, 2,310 households, and 1,366 families living in the city. The population density was . There were 2,611 housing units at an average density of . The
racial makeup of the city was 96.4% White, 0.3% African American, 0.2% Native American, 0.5% Asian, 1.1% from other races, and 1.5% from two or more races. Hispanic or Latino of any race were 4.0%. Of the 2,310 households 26.1% had children under the age of 18 living with them, 44.3% were
married couples living together, 10.8% had a female householder with no husband present, 4.0% had a male householder with no wife present, and 40.9% were non-families. 37.0% of households were one person and 19% were one person aged 65 or older. The average household size was 2.18 and the average family size was 2.82. The median age was 44.4 years. 22.4% of residents were under the age of 18; 6.5% were between the ages of 18 and 24; 21.5% were from 25 to 44; 26.5% were from 45 to 64; and 23% were 65 or older. The gender makeup of the city was 46.6% male and 53.4% female.
2000 census At the
2000 census there were 5,546 people, 2,421 households, and 1,486 families living in the city. The population density was . There were 2,645 housing units at an average density of . The
racial makeup of the city was 97.91% White, 0.11% African American, 0.47% Native American, 0.22% Asian, 0.72% from other races, and 0.58% from two or more races. Hispanic or Latino of any race were 2.72%. Of the 2,421 households 25.9% had children under the age of 18 living with them, 48.6% were married couples living together, 9.7% had a female householder with no husband present, and 38.6% were non-families. 34.2% of households were one person and 17.8% were one person aged 65 or older. The average household size was 2.22 and the average family size was 2.84. Age spread: 22.4% under the age of 18, 8.2% from 18 to 24, 23.9% from 25 to 44, 22.4% from 45 to 64, and 23.1% 65 or older. The median age was 42 years. For every 100 females, there were 85.8 males. For every 100 females age 18 and over, there were 82.5 males. The median household income was $29,435 and the median family income was $39,110. Males had a median income of $31,657 versus $18,588 for females. The per capita income for the city was $16,301. About 11.0% of families and 15.4% of the population were below the
poverty line, including 26.9% of those under age 18 and 8.0% of those age 65 or over. ==Tarkio Sloths==