Numbers 1:45-47

International Standard Version

⁴⁵ Everyone was numbered from the descendants of Israel, from their ancestral houses, from all the men who were 20 years and above and who could serve in the army. ⁴⁶ The total of all those who were numbered was 603,550.

Exemption of the Tribe of Levi from the Census

⁴⁷ The descendants of Levi were not counted according to their ancestral houses