Coopersburg was settled in about the 1730 and was called Freyburg, named after Joseph Frey a local tavern owner and judge, in its early years. By the time the town was incorporated, it had been renamed Coopersburg, after Judge Peter Cooper. The town was once the site of famous cattle sales at the estate of Tilghman S. Cooper.
As of the censusGR2 of 2000, there were 2,582 people, 983 households, and 671 families residing in the borough. The population density was 1,072.0/km² (2,780.7/mi²). There were 1,050 housing units at an average density of 435.9/km² (1,130.8/mi²). The racial makeup of the borough was 96.01% White, 0.70% African American, 0.08% Native American, 1.70% Asian, 0.04% Pacific Islander, 0.46% from other races, and 1.01% from two or more races. Hispanic or Latino of any race were 1.78% of the population.
There were 983 households out of which 29.3% had children under the age of 18 living with them, 54.5% were married couples living together, 9.4% had a female householder with no husband present, and 31.7% were non-families. 26.7% of all households were made up of individuals and 11.1% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 2.99.
In the borough the population was spread out with 21.6% under the age of 18, 7.6% from 18 to 24, 26.4% from 25 to 44, 23.7% from 45 to 64, and 20.7% who were 65 years of age or older. The median age was 41 years. For every 100 females there were 94.4 males. For every 100 females age 18 and over, there were 88.0 males.
The median income for a household in the borough was $43,603, and the median income for a family was $51,935. Males had a median income of $36,938 versus $29,545 for females. The per capita income for the borough was $21,689. About 2.8% of families and 2.9% of the population were below the poverty line, including 1.1% of those under age 18 and 4.5% of those age 65 or over.
The Borough is served by the Southern Lehigh School District.