2020 census As of the
2020 census, Merriam had a population of 11,098, with 5,070 households and 2,762 families. The median age was 38.2 years. 19.1% of residents were under the age of 18, and 17.6% were 65 years of age or older. For every 100 females, there were 93.4 males, and for every 100 females age 18 and over, there were 91.4 males age 18 and over. 100.0% of residents lived in urban areas, while 0.0% lived in rural areas. The population density was 2,570.8 inhabitants per square mile (992.6/km). There were 5,297 housing units at an average density of 1,227.0 per square mile (473.7/km), of which 4.3% were vacant. The homeowner vacancy rate was 1.0% and the rental vacancy rate was 5.7%. Males had a median income of $45,116 (+/- $5,606) versus $34,464 (+/- $4,520) for females. The median income for those above 16 years old was $39,790 (+/- $3,007). Approximately, 5.3% of families and 9.0% of the population were below the
poverty line, including 5.2% of those under the age of 18 and 8.1% of those ages 65 or over. The percent of those with a bachelor's degree or higher was estimated to be 29.8% of the population.
2010 census As of the
2010 census, there were 11,003 people, 4,900 households, and 2,788 families living in the city. The
population density was . There were 5,224 housing units at an average density of . The racial makeup of the city was 83.4%
White, 6.1%
African American, 0.5%
Native American, 2.6%
Asian, 0.1%
Pacific Islander, 3.9% from
other races, and 3.6% from
two or more races.
Hispanic or
Latino of any race were 10.7% of the population. There were 4,900 households, of which 25.3% had children under the age of 18 living with them, 41.6% were
married couples living together, 11.3% had a female householder with no husband present, 4.0% had a male householder with no wife present, and 43.1% were non-families. 34.9% of all households were made up of individuals, and 9.4% had someone living alone who was 65 years of age or older. The average household size was 2.21 and the average family size was 2.88. The median age in the city was 37.4 years. 20.1% of residents were under the age of 18; 8.4% were between the ages of 18 and 24; 30.9% were from 25 to 44; 26.6% were from 45 to 64; and 13.9% were 65 years of age or older. The gender makeup of the city was 47.8% male and 52.2% female. ==Economy==