Heidelberg is a small suburb in Southland with a population of 2,205 and a median age of 36. Median personal income is $35K per year. The main ethnic groups are European, Māori, Asian.

Livability indicators for Heidelberg: NZDep decile 9 (high deprivation); 2 schools with avg EQI 506.

In 2026, Heidelberg recorded 9 building approvals (9 houses, 0 units), down 60.9% year-on-year.