'Polls' in the Bible

The Levites were numbered from thirty years old and upward: and their number by their polls, man by man, was thirty-eight thousand.

These were the sons of Levi after their fathers' houses, even the heads of the fathers' houses of those who were counted individually, in the number of names by their polls, who did the work for the service of the house of Yahweh, from twenty years old and upward.