1 Chronicles 4:27

And Shimei had sixteen sons and six daughters; but his brethren had not many children, neither did all their family multiply, like to the children of Judah.

Cross-reference

Numbers 26:14 gives the Simeonite census of 22,200 — confirming the small population mentioned here.

Numbers 26:22 gives Judah's later census of 76,500 — the large number that contrasts with Simeon's small clan.