There is an extensive historiographical debate about the status and make up of the migrants to the New World. New England was actually one of the areas that received the least number of settlers over the course of the colonial period. Even during the "Great Migration" of the 1620s and 1630s, more people emigrated to the Chesapeake and Caribbean colonies. Here is a breakdown of the emigration to New England during the great migration (for those we know the ages of):

Age	Number of Emigrants	% of total
0-10	98	23.7
11-20	102	24.7
21-30	102	24.7
31-40	71	17.2
41-50	29	7.0
51-60	10	2.5
61-70	1	0.2

So the average age was about 25. The sex balance is 56.8% male, 43.2% female. This was far more balanced than anywhere else in the colonies, where the overall emigration ratio was closer to 4 males to every female.

For the family make up, almost 90% of those travelling to New England traveled with other members of their family. Most of the emigrants went as complete families, meaning both parents with children. They tended to come over without terms of indenture, meaning they paid or had their passage paid for and did not owe a term of labor upon arriving in the New World.

Sources: Virginia Anderson, New England's Generation; The Great Migration and the Formation of Society and Culture in the Seventeenth Century Appendix; Galenson, Traders, Planters and Slaves; Gemery, "Emigration from the British Isles to the New World, 1630-1700; Inferences from Colonial Populations" Research in Economic History, (1980) pp. 179-231.