Optimist International

Optimist International is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Community Service Organizations
• Associations, Clubs, & Organizations

North American Industry Classification System (NAICS) Categories:

• Environment, Conservation And Wildlife Organizations > Community Services
• Civic And Social Organizations

Standard Industry Classification (SIC) Categories:

• Social Services, Nec > Community Services
• Membership Organizations, Nec