An imaging device includes a lens barrel for supporting, while enclosing, one or more lenses; an imaging element for detecting light that passes through the lens; a lens holder for supporting the lens barrel; an elastic body that is disposed so as to bias the lens barrel relative to the lens holder; and an upper case that is formed so as to enable connection with an external member. The lens holder and the upper case are formed integrally. In such an imaging device, the lens holder and the upper case are formed integrally, and thus when compared to a configuration wherein the lens holder and the upper case are structured separately, the number of components can be reduced, thereby enabling a reduction in costs.