Elko was initially a railway village in 1858. New Market was named for the town near Cambridge, England though it was first named Jackson until its establishment about the same time.[6] Both Elko and New Market were common town names of the era according to the Minnesota Historical Society.
On March 21, 2006, both the cities of Elko and New Market passed a referendum to merge.[7] The new city was named Elko New Market with the merger taking effect on January 1, 2007.
As of the census of 2010, there were 4,110 people, 1,259 households, and 1,064 families residing in the city. The population density was 1,223.2 inhabitants per square mile (472.3/km2). There were 1,328 housing units at an average density of 395.2 per square mile (152.6/km2). The racial makeup of the city was 92.5% White, 1.6% African American, 0.3% Native American, 3.1% Asian, 0.2% from other races, and 2.2% from two or more races. Hispanic or Latino of any race were 2.3% of the population.
There were 1,259 households, of which 60.4% had children under the age of 18 living with them, 73.9% were married couples living together, 6.3% had a female householder with no husband present, 4.3% had a male householder with no wife present, and 15.5% were non-families. 9.5% of all households were made up of individuals, and 0.9% had someone living alone who was 65 years of age or older. The average household size was 3.26 and the average family size was 3.53.
The median age in the city was 30.4 years. 38% of residents were under the age of 18; 4.6% were between the ages of 18 and 24; 39.5% were from 25 to 44; 15.1% were from 45 to 64; and 2.7% were 65 years of age or older. The gender makeup of the city was 50.9% male and 49.1% female.