Read Numbers 26:62 Using Other Translations
And those that were numbered of them were twenty and three thousand, all males from a month old and upward: for they were not numbered among the children of Israel, because there was no inheritance given them among the children of Israel.
And those listed were 23,000, every male from a month old and upward. For they were not listed among the people of Israel, because there was no inheritance given to them among the people of Israel.
The men from the Levite clans who were one month old or older numbered 23,000. But the Levites were not included in the registration of the rest of the people of Israel because they were not given an allotment of land when it was divided among the Israelites.