Middle Arm is a locality in the Upper Lachlan Shire, in the Southern Tablelands region of New South Wales, Australia. At the , it had a population of 377.
Demographics As of the 2021 Australian census, 377 people resided in Middle Arm, up from 362 in the . The median age of persons in Middle Arm was 46 years. There were more males than females, with 53.5% of the population male and 46.5% female. The average household size was 2.7 people per household.
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