Mount Holly is a small suburban city in northeastern Gaston County, North Carolina, United States.

Land grants were first issued in the Mount Holly area by King George II of Great Britain around 1750.

The mill's success and the prosperity of the area as a whole led local residents to petition the North Carolina General Assembly for incorporation of Mount Holly in 1879.

The first railroad in Gaston County, the Carolina Central Railway, began serving Mount Holly in 1860.

The line, which runs parallel with North Carolina State Highway 27, is still in service and operated by CSX.

The Mount Holly Branch of the Gaston County Public Library serves this community.

[12] Improvements in the regional transportation network and the economic growth of the Charlotte-Mecklenburg area, and Mount Holly's strategic location between Charlotte and Gastonia, have created conditions for an expanding population in recent years.

The city's largest textile firm is American & Efird, Inc. (A&E), the world's second-largest thread maker.

American Yarn had its start in 1891 when Charles Egbert Hutchison founded the Nims Manufacturing Company on Dutchman's Creek.

[13] With six plants and their corporate offices in Mount Holly, A&E employs more than 980 people and maintains a strong presence in the community.

[14] Mount Holly's historic downtown district includes several restaurants, several churches, a coffee shop, salons and retail offerings in addition to offices, banks and other businesses.