A community band is a concert band or brass band ensemble, generally sponsored by the town or city in which it is located and consisting primarily of amateur performers. Bowen defines a community band as "a community-based ensemble of wind and percussion players, composed primarily of adults who do not receive the majority of their livelihood from participation in the ensemble, which regularly holds rehearsals and performs at least one time per year". Some bands are also marching bands, participating in parades or other outdoor events. Community bands are also referred to as 'town', 'citizen' or 'civic' bands. Other names include 'wind orchestra', 'wind symphony' and 'wind ensemble'. The name is usually preceded by the name of the community or organization that sponsors the band, the town or county where they are based, or preceded by the name of a local geographical landmark or regional term. Sometimes the name just contains a place name followed by the word 'band'.
In the United States, community band concerts are most frequently given during holidays and patriotic events, such as the Fourth of July, Memorial Day, Father's Day, and the lighting of community Christmas trees. During the summer, most community concerts are given outdoors. The size of a community band varies from tens of musicians to over one hundred. During the United States Bicentennial, having a community band was one of the criteria for being designated a "Bicentennial City". There are about 2,500 community bands across the United States.
The modern American community band is rooted in European tradition. Immigrants, like the German Moravians who settled in Pennsylvania and North Carolina, brought the band tradition with them to the United States. The Moravians organized bands in towns where they settled, and they offered both secular and religious music selections. The Moravian bands are still playing in Moravian communities, such as in Winston-Salem, North Carolina.
Community bands in the United States often emerged from militia or military bands. The earliest amateur bands in the United States did occasionally include woodwind instruments but band and band music emphasized primarily the brass instruments. The popularity of early community bands can be attributed to the participation of thousands of ordinary citizens in these ensembles and the patriotic appeal of the music and performance.