The board's administrative area includes the suburbs of Glendene, Henderson, Massey, Rānui, Sunnyvale, Te Atatū Peninsula, Te Atatū South, Westgate and West Harbour,[3] and covers from the foothills of the Waitākere Ranges in the west and the Waitematā Harbour in the east.

[6] Ethnicities were 43.6% European/Pākehā, 18.1% Māori, 22.2% Pasifika, 31.7% Asian, 2.9% Middle Eastern, Latin American and African New Zealanders, and 1.0% other.

[6] Henderson-Massey Local Board Area had a population of 118,422 at the 2018 New Zealand census.

The percentage of people born overseas was 37.5, compared with 27.1% nationally.

Although some people chose not to answer the census's question about religious affiliation, 40.9% had no religion, 40.5% were Christian, 1.2% had Māori religious beliefs, 4.9% were Hindu, 2.8% were Muslim, 1.7% were Buddhist and 2.0% had other religions.