Medium urban area
Kaiapoi
The 41st largest urban area or settlement in New Zealand, with an estimated 13,700 residents at 30 June 2025.
Population 2025
13,700
Estimated residents
Change on 2024
+1.1%
13,550 a year earlier
Since 2018
+12.3%
12,200 in 2018
Median age
43.4
Years, 2025
Population, 1996 to 2025
1996 · 8,530+60.6% over 29 years2025 · 13,700
Who lives here
- 0–14 years2,20016.1%
- 15–39 years4,15030.3%
- 40–64 years4,15030.3%
- 65 and over3,20023.4%