Mairtown covers 0.94 km2 (0.36 sq mi)[1] and had an estimated population of 2,440 as of June 2025,[2] with a population density of 2,596 people per km2.
Historical population| Year | | |
|---|
| 2006 | 2,205 | — |
|---|
| 2013 | 2,265 | +0.38% |
|---|
| 2018 | 2,475 | +1.79% |
|---|
| 2023 | 2,388 | −0.71% |
|---|
| Source: [8][9] |
Mairtown had a population of 2,388 in the 2023 New Zealand census, a decrease of 87 people (−3.5%) since the 2018 census, and an increase of 123 people (5.4%) since the 2013 census. There were 1,056 males, 1,329 females and 3 people of other genders in 1,059 dwellings.[10] 3.3% of people identified as LGBTIQ+. The median age was 46.9 years (compared with 38.1 years nationally). There were 375 people (15.7%) aged under 15 years, 384 (16.1%) aged 15 to 29, 960 (40.2%) aged 30 to 64, and 669 (28.0%) aged 65 or older.[9]
People could identify as more than one ethnicity. The results were 74.2% European (Pākehā); 31.2% Māori; 4.5% Pasifika; 8.2% Asian; 0.5% Middle Eastern, Latin American and African New Zealanders (MELAA); and 2.5% other, which includes people giving their ethnicity as "New Zealander". English was spoken by 97.2%, Māori language by 7.7%, Samoan by 0.8%, and other languages by 9.3%. No language could be spoken by 1.9% (e.g. too young to talk). New Zealand Sign Language was known by 0.8%. The percentage of people born overseas was 19.5, compared with 28.8% nationally.
Religious affiliations were 35.3% Christian, 1.9% Hindu, 0.3% Islam, 2.3% Māori religious beliefs, 0.6% Buddhist, 0.3% New Age, and 2.1% other religions. People who answered that they had no religion were 49.1%, and 8.2% of people did not answer the census question.
Of those at least 15 years old, 324 (16.1%) people had a bachelor's or higher degree, 1,086 (53.9%) had a post-high school certificate or diploma, and 525 (26.1%) people exclusively held high school qualifications. The median income was $33,500, compared with $41,500 nationally. 144 people (7.2%) earned over $100,000 compared to 12.1% nationally. The employment status of those at least 15 was that 879 (43.7%) people were employed full-time, 228 (11.3%) were part-time, and 48 (2.4%) were unemployed.[9]