Numbers 1:30
"Of the children of Zebulun, by their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;"
Cross References (ranked by relevance)
Genesis 46:14
And the sons of Zebulun; Sered, and Elon, and Jahleel.
Genesis 49:13
Zebulun shall dwell at the haven of the sea; and he shall be for an haven of ships; and his border shall be unto Zidon.
Genesis 30:20
And Leah said, God hath endued me with a good dowry; now will my husband dwell with me, because I have born him six sons: and she called his name Zebulun.