1 Battalion: Unit strength on 11 July 1921 was 281 all ranks, and the strength on 1 July 1922 was 362 all ranks. The companies of the 1 Battalion were located as follows: New Ross, Rathgarugue, Cushinstown, Adamstown, Templeudigan and Ballywilliam.
2 Battalion: Unit strength on 11 July 1921 was 189 all ranks, and the strength on 1 July 1922 was 349 all ranks. The companies of the 2 Battalion were located as follows: Gusseranne, Campile, Ramsgrange, Fethard-on-Sea, Newbawn, Clongeen and St. Leonards.
3 Battalion: Unit strength on 11 July 1921 was 159 all ranks, and the strength on 1 July 1922 was 318 all ranks. The companies of the 3 Battalion were located as follows: Murrinstown, Bridgtown, Broadway, Ballymitty and Tagoat.
4 Battalion: Unit strength on 11 July 1921 was 322 all ranks, and the strength on 1 July 1922 was 329 all ranks. The companies of the 4 Battalion were located as follows: Wexford Town, Crossabeg, Ballymurrin, Castlebridge, Taghmon and Glynn.

An Active Service Unit was effective with the South Wexford Brigade on 11 July 1921 with a total overall strength of 30 all ranks. Personnel were attached to the A.S.U from the battalions of the brigade