| Waianiwa | |
| Coordinates: | -46.295°N 168.251°W |
| Subdivision Type: | Country |
| Subdivision Name: | New Zealand |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southland region |
| Subdivision Type2: | Territorial authorities of New Zealand |
| Subdivision Name2: | Southland District |
| Subdivision Type3: | Ward |
| Subdivision Name3: | Oreti Ward |
| Subdivision Type5: | Community |
| Subdivision Name5: | Oreti Community |
| Seat Type: | Electorates |
| Leader Name: | Southland District Council |
| Leader Title1: | Regional council |
| Leader Name1: | Southland Regional Council |
| Leader Title2: | Mayor of Southland |
| Leader Title3: | Invercargill MP |
| Leader Title4: | Te Tai Tonga MP |
| Timezone: | NZST |
| Utc Offset: | +12 |
| Timezone Dst: | NZDT |
| Utc Offset Dst: | +13 |
| Postal Code Type: | Postcode(s) |
| Blank Name: | Local iwi |
Waianiwa is a town and statistical area in the Southland region of the South Island of New Zealand.
Waianiwa statistical area covers 228.65km2[1] and had an estimated population of as of with a population density of people per km2.
The statistical area had a population of 1,170 at the 2018 New Zealand census, an increase of 15 people (1.3%) since the 2013 census, and an increase of 132 people (12.7%) since the 2006 census. There were 417 households, comprising 600 males and 570 females, giving a sex ratio of 1.05 males per female. The median age was 36.3 years (compared with 37.4 years nationally), with 276 people (23.6%) aged under 15 years, 210 (17.9%) aged 15 to 29, 588 (50.3%) aged 30 to 64, and 96 (8.2%) aged 65 or older.
Ethnicities were 84.6% European/Pākehā, 8.5% Māori, 0.5% Pasifika, 11.5% Asian, and 2.1% other ethnicities. People may identify with more than one ethnicity.
The percentage of people born overseas was 17.7, compared with 27.1% nationally.
Although some people chose not to answer the census's question about religious affiliation, 47.7% had no religion, 42.6% were Christian, 0.3% had Māori religious beliefs, 1.0% were Hindu, 0.5% were Buddhist and 1.3% had other religions.
Of those at least 15 years old, 147 (16.4%) people had a bachelor's or higher degree, and 162 (18.1%) people had no formal qualifications. The median income was $42,000, compared with $31,800 nationally. 171 people (19.1%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 564 (63.1%) people were employed full-time, 165 (18.5%) were part-time, and 15 (1.7%) were unemployed.
Waianiwa School is a state full primary school for years 1 to 8 with a roll of as of The school first opened in 1863.[2]