The Saint Louis Zoo Foundation: $63.3M Revenue, $14.1M Expenses

The Saint Louis Zoo Foundation earns a C on the efficiency rubric — the median bucket on the NonprofitTruth scale, indicating performance close to the national midpoint across financial reserves, officer compensation, and revenue consistency. Composite score: 54/100.

The Saint Louis Zoo Foundation reported $63.3M in 2023 revenue — a mid-sized nonprofit by U.S. standards. Organizations in this bracket typically operate with a small permanent staff, project-based program structures, and modest reserves. Reserves are the limiting factor: The Saint Louis Zoo Foundation carries relatively few months of operating expenses on its balance sheet, which can leave an organization exposed if a major funding source pauses.

Revenue has grown meaningfully across the five-year filing history — a sign of expanding donor base, new grants, or scaling programs. The Saint Louis Zoo Foundation reported $63.3M in 2023, up notably from the start of the window. Current-officer compensation is not separately reported in the filing — typical for nonprofits where leadership is paid through a related entity (parent system, university, or foundation) rather than the filing organization itself, or for small organizations whose chief is a volunteer or board member. The Saint Louis Zoo Foundation works in Environment & Animals — environmental, conservation, animal-welfare, and natural-resources programs. The sector spans large international conservation groups and small local land trusts; the financial profile varies accordingly.