ABOUT CELINA: We’re growing! Every year hundreds of families are discovering the wholesome, country lifestyle; the excellent school system, and the warm, friendly community of Celina, TX. Many retail and commercial businesses are considering Celina for their next location and development is moving fast. With a trade population of approximately 69,000 and an ideal location just north of Frisco, Texas. CELINA SCHOOLS: Celina schools have met standard ratings and may qualify for special honors called distinctions. CELINA TAX RATE: The city of Celina, TX tax rate 0.0249.