The Dunphy Family:

Phil - Cancer

Claire - Gemini

Haley - Virgo

Alex - Capricorn

Luke - Aquarius

Dylan - Sagittarius

The Prichett/Delgado Family: 

Jay: Aries

Gloria: Leo

Manny - Taurus

The Tucker/Prichett Family:

Michell - Libra

Cameron - Pisces

Lily - Scorpio