Definition of johnstown:
(n) :
A number of places in the United States:
(n) :
A home rule municipality in Larimer County and Weld County, Colorado.
(n) :
An unincorporated community in Cumberland County, Illinois.
(n) :
An unincorporated community in Greene County, Indiana.
(n) :
An unincorporated community in McPherson County, Kansas.
(n) :
An unincorporated community in Calvert County, Maryland.