An Annual Membership Drive is conducted in order to expand interest in the Mill Cove project and provide ongoing operating funds for the Corporation. Memberships are encouraged and are renewed on an annual basis. Membership categories include:
| Landmark Partners | $1,000 to $5,000 |
| Benefactors | $500 to $999 |
| Conservators | $250 to $499 |
| Sustaining Members | $100 to $249 |
| Supporting Members | $51 to $99 |
| Family Members | $50 |
| Individual Members | $35 |
A major Capital Campaign is currently underway to assist with funding the final design and construction of the Mill Cove Environmental Education Center and related site improvements. Total costs are estimated at $3 million. A combination of state and/or federal grants along with private and partner contributions will fund the Center. The campaign is anticipated to be a four-year initiative. Gifts in a single installment or spread over the duration of the campaign are welcome, as are planned gifts that may be a part of an estate.
Mill Cove, Inc. is a 501 (c) 3 organization; contributions are tax deductible. Naming opportunities are available for significant contributions.
Major corporate sponsors and state and federal grants are additional potential sources of revenue currently being pursued. Membership fees, rental income, and service fees for use of the facilities would provide ongoing income to maintain the facility. In addition, the board of directors proposes to establish a living endowment fund to sustain the facility in future generations. It is also expected that maintenance agreements with Mansfield University and other project partners will help defray operational expenses.