?Ewa Beach is a census-designated place (CDP) located in ?Ewa District and the City & County of Honolulu along the leeward coast of O?ahu in Hawai?i. As of the 2010 Census, the CDP had a total population of 14,955.The word ?ewa means "crooked" or "ill-fitting" in Hawaiian. The name comes from the myth that the gods K?neand Kanaloa threw a stone to determine the boundaries, but it was lost and later found at Pili o Kahe.Along much of the South Shore of O?ahu, ?Ewa is a reference to the direction of ?Ewa Beach, roughly westwards along the shore. Related terms are mauka (towards the mountains, roughly northwards), makai (towards the ocean, roughly South), and Diamond Head or Koko Head, roughly eastwards along the shore.According to the United States Census Bureau, the CDP has a total area of 1.9 square miles (4.9 km2), of which 1.4 square miles (3.6 km2) is land and 0.4 square miles (1.0 km2) is water. The total area is 24.06% water, consisting entirely of the Pacific Ocean off the island shore.