The Millspace is the product of a collaboration between the following organizations and individuals:
- Newmarket Community Development Corporation
- Lamprey Arts & Culture Alliance
- Newmarket Main Street Corporation
- Newmarket Recreation Department
- Newmarket Heritage Advisory Committee
- Newmarket Historical Society
- Newmarket Business Association
- Newmarket Veterans Memorial Trust
- Newmarket Town Council
- Newmarket Downtown TIF Advisory Committee
- Town residents
- Local artists and musicians