And as for the villages, with their fields, some of the people of Judah lived in Kiriath-arba and its villages, and in Dibon and its villages, and in Jekabzeel and its villages,
Having given an account of the principal persons that dwelt in Jerusalem (a larger account of whom he had before, Ch1 9:2, etc.), Nehemiah, in these verses, gives us some account of the other cities, in which dwelt the residue of Israel, Neh 11:20. It was requisite that Jerusalem should be replenished, yet not so as to drain the country.
Commenting on Nehemiah 11:20-36
THEIR NAMES. (Neh. 11:3-36) the chief of the province--that is, Judea. Nehemiah speaks of it, as it then was, a small appendix of the Persian empire. in the cities of Judah dwelt every one in his possession in their cities--The returned exiles, who had come from Babylon, repaired generally, and by a natural impulse, to the lands and cities throughout the country which had been anciently assigned them.
Commenting on Nehemiah 11:3-36
some of the children of Judah dwelt at Kirjath-arba--The whole region in which the villages here mentioned were situated had been completely devastated by the Chaldean invasion; and, therefore, it must be assumed, that these villages had been rebuilt before "the children dwelt in them."