Melba, Idaho  Melba is a city in Canyon County, Idaho, United States. The population was 513 at the 2010 census, up from 439 in 2000. It is part of the Boise City–Nampa, Idaho Metropolitan Statistical Area. Melba was founded in 1912 by Clayton C. Todd, who named it after his daughter. Melba is located at (43.373487, -116.529194). at an elevation of above sea level. It is south of Nampa, and three miles (5 km) northeast of the Snake River. According to the United States Census Bureau, the city has a total area of , of which, is land and is water. At the 2010 census there were 513 people in 171 households, including 133 families, in the city. The population density was . There were 197 housing units at an average density of . The racial makeup of the city was 78.9% White, 0.2% African American, 0.2% Asian, 17.7% from other races, and 2.9% from two or more races. Hispanic or Latino of any race were 24.6%. Of the 171 households 45.0% had children under the age of 18 living with them, 57.9% were married couples living together, 15.2% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 22.2% were non-families. 21.1% of households were one person and 11.1% were one person aged 65 or older. The average household size was 3.00 and the average family size was 3.38. The median age was 32.8 years. 33.5% of residents were under the age of 18; 7.3% were between the ages of 18 and 24; 27.9% were from 25 to 44; 21.2% were from 45 to 64; and 10.3% were 65 or older. The gender makeup of the city was 53.2% male and 46.8% female. At the 2000 census there were 439 people in 156 households, including 105 families, in the city. The population density was 1,481.5 people per square mile (565.0/km²). There were 164 housing units at an average density of 553.4 per square mile (211.1/km²). The racial makeup of the city was 84.28% White, 0.46% Native American, 0.23% Asian, 13.67% from other races, and 1.37% from two or more races.