Castor Bay South

NZDep 2
Pop 2,094Median age 41Auckland

Castor Bay South is a small suburb in Auckland with a population of 2,094 and a median age of 41. Median personal income is $56K per year. The main ethnic groups are European, Asian, Māori.

Livability indicators for Castor Bay South: NZDep decile 2 (low deprivation (affluent)).

In 2026, Castor Bay South recorded 3 building approvals (3 houses, 0 units), down 62.5% year-on-year.

INVESTMENT SIGNALS
DeprivationDecile 2 Low
Development-62% Slowing
DEMOGRAPHICS
Population2,094
Median Age41
Household Size
Personal Income$56K/yr
Household Income
ETHNICITY
European66.5%
Asian23.8%
Māori5.5%
MELAA2.7%
Pacific Peoples1.5%
TOP INDUSTRIES
Professional, Scientific and Technical204
Financial and Insurance102
Health Care and Social Assistance96
LIVABILITY (NZDep 2023)
Deprivation Decile2/10
NZDep Score922
Low deprivation — among the least deprived areas in NZ.
DEVELOPMENT
Approvals (2026)3
  Houses3
YoY Change-62.5%
Data: Stats NZ Census 2023 · MBIE · MoE · NZDep2023