2020 census

The 2020 United States census counted 251 people, 93 households, and 71 families in Copeland.^[8][9] The population density was 1,077.3 per square mile (415.9/km²). There were 118 housing units at an average density of 506.4 per square mile (195.5/km²).^[9][10] The racial makeup was 93.63% (235) white or European American (85.66% non-Hispanic white), 0.0% (0) black or African-American, 0.0% (0) Native American or Alaska Native, 0.0% (0) Asian, 0.0% (0) Pacific Islander or Native Hawaiian, 2.79% (7) from other races, and 3.59% (9) from two or more races.^[11] Hispanic or Latino of any race was 11.55% (29) of the population.^[12]

Of the 93 households, 30.1% had children under the age of 18; 61.3% were married couples living together; 18.3% had a female householder with no spouse or partner present. 22.6% of households consisted of individuals and 15.1% had someone living alone who was 65 years of age or older.^[9] The average household size was 2.6 and the average family size was 3.4.^[13] The percent of those with a bachelor’s degree or higher was estimated to be 11.2% of the population.^[14]

30.7% of the population was under the age of 18, 5.2% from 18 to 24, 19.1% from 25 to 44, 25.5% from 45 to 64, and 19.5% who were 65 years of age or older. The median age was 41.5 years. For every 100 females, there were 102.4 males.^[9] For every 100 females ages 18 and older, there were 97.7 males.^[9]

The 2016-2020 5-year American Community Survey estimates show that the median household income was $52,188 (with a margin of error of +/- $22,342) and the median family income was $66,875 (+/- $14,576).^[15] Males had a median income of $35,288 (+/- $31,194) versus $12,917 (+/- $12,107) for females. Approximately, 3.6% of families and 3.0% of the population were below the poverty line, including 4.9% of those under the age of 18 and 3.7% of those ages 65 or over.^[16][17]

2010 census

As of the census^[18] of 2010, there were 310 people, 112 households, and 87 families residing in the city. The population density was 1,240.0 inhabitants per square mile (478.8/km²). There were 130 housing units at an average density of 520.0 per square mile (200.8/km²). The racial makeup of the city was 96.1% White, 1.6% African American, 0.3% Native American, and 1.9% from other races. Hispanic or Latino of any race were 5.2% of the population.

There were 112 households, of which 36.6% had children under the age of 18 living with them, 71.4% were married couples living together, 1.8% had a female householder with no husband present, 4.5% had a male householder with no wife present, and 22.3% were non-families. 20.5% of all households were made up of individuals, and 8.9% had someone living alone who was 65 years of age or older. The average household size was 2.77 and the average family size was 3.25.

The median age in the city was 37.3 years. 30.3% of residents were under the age of 18; 7.7% were between the ages of 18 and 24; 23.3% were from 25 to 44; 25.5% were from 45 to 64; and 13.2% were 65 years of age or older. The gender makeup of the city was 54.2% male and 45.8% female.

2000 census

As of the census^[19] of 2000, there were 339 people, 122 households, and 86 families residing in the city. The population density was 1,322.7 inhabitants per square mile (510.7/km²). There were 133 housing units at an average density of 518.9 per square mile (200.3/km²). The racial makeup of the city was 91.15% White, 2.06% Native American, 6.49% from other races, and 0.29% from two or more races. Hispanic or Latino of any race were 9.73% of the population.

There were 122 households, out of which 42.6% had children under the age of 18 living with them, 63.9% were married couples living together, 4.9% had a female householder with no husband present, and 28.7% were non-families. 26.2% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.78 and the average family size was 3.44.

In the city, the population was spread out, with 34.5% under the age of 18, 7.4% from 18 to 24, 29.8% from 25 to 44, 18.0% from 45 to 64, and 10.3% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 115.9 males. For every 100 females age 18 and over, there were 101.8 males.

The median income for a household in the city was $35,625, and the median income for a family was $38,594. Males had a median income of $31,458 versus $21,250 for females. The per capita income for the city was $15,615. About 11.3% of families and 14.8% of the population were below the poverty line, including 21.6% of those under age 18 and none of those age 65 or over.