Trentham, New Zealand

Trentham
Suburb
View looking northeast from Silverstream, with Trentham Racecourse in the centre and Trentham Army Camp at right
View looking northeast from Silverstream, with Trentham Racecourse in the centre and Trentham Army Camp at right
Interactive map of Trentham
Coordinates: 41°08′07″S 175°02′25″E / 41.13528°S 175.04028°E / -41.13528; 175.04028
CountryNew Zealand
RegionWellington Region
Territorial authorityUpper Hutt
Electorates
Government
 • Territorial AuthorityUpper Hutt City Council
 • Regional councilGreater Wellington Regional Council
 • Mayor of Upper HuttPeri Zee[1]
 • Remutaka MPChris Hipkins[2]
 • Ikaroa-Rāwhiti MPCushla Tangaere-Manuel[3]
Area
[4]
 • Total
11.37 km2 (4.39 sq mi)
Population
 (June 2025)[5]
 • Total
11,730
 • Density1,032/km2 (2,672/sq mi)

Trentham (/ˈtrɛnθəm/) is the most populous suburb of Upper Hutt, a city in the Wellington region of New Zealand. The suburb is located in a widening of the Hutt Valley, five kilometres to the southwest of the Upper Hutt city centre.

The suburb includes the Trentham Racecourse, the base of the Wellington Racing Club, the site of Hutt International Boys' School, and the Trentham Railway Station.[6]

The Trentham Military Camp was used extensively for training soldiers in preparation for World War I and World War II.[7][8] It is still a base for the New Zealand Defence Force.

A General Motors-Holden assembly plant operated in Trentham between 1967 and 1990.[9]

History

The area was settled in the 1840s.[6]

The name "Trentham" was initially given by Richard Barton, the first European Settler in the area, in honour of his former employer, the Duke of Sutherland. One of the Duke of Sutherland's subsidiary titles was Viscount Trentham, of Trentham in the County of Stafford.

The Barton family memory lives on in the area, with Barton Road, Barton Avenue and an area of native trees called Barton's Bush, which is within the reserve now known as Trentham Memorial Park. Richard Barton was interred in the grounds of St John's Church, and there are also memorials to him in the form of brass plaques within the Church building.[10]

Demographics

Trentham, comprising the statistical areas of Poets Block, Brentwood, Trentham North and Trentham South, covers 11.37 km2 (4.39 sq mi).[4] It had an estimated population of 11,730 as of June 2025, with a population density of 807 people per km2.

Historical population
YearPop.±% p.a.
20068,265—    
20138,529+0.45%
20189,603+2.40%
202310,956+2.67%
Source: [11][12]
St Johns Church

Trentham had a population of 10,956 in the 2023 New Zealand census, an increase of 1,353 people (14.1%) since the 2018 census, and an increase of 2,427 people (28.5%) since the 2013 census. There were 5,544 males, 5,355 females, and 54 people of other genders in 4,059 dwellings.[13] 3.5% of people identified as LGBTIQ+. The median age was 37.7 years (compared with 38.1 years nationally). There were 2,022 people (18.5%) aged under 15 years, 1,923 (17.6%) aged 15 to 29, 5,223 (47.7%) aged 30 to 64, and 1,788 (16.3%) aged 65 or older.[11]

People could identify as more than one ethnicity. The results were 69.5% European (Pākehā); 18.8% Māori; 7.7% Pasifika; 17.9% Asian; 1.7% Middle Eastern, Latin American and African New Zealanders (MELAA); and 2.8% other, which includes people giving their ethnicity as "New Zealander". English was spoken by 95.5%, Māori by 4.1%, Samoan by 2.2%, and other languages by 16.2%. No language could be spoken by 2.7% (e.g. too young to talk). New Zealand Sign Language was known by 0.7%. The percentage of people born overseas was 26.3, compared with 28.8% nationally.[11]

Religious affiliations were 34.5% Christian, 5.3% Hindu, 1.2% Islam, 1.2% Māori religious beliefs, 1.1% Buddhist, 0.6% New Age, 0.1% Jewish, and 3.2% other religions. People who answered that they had no religion were 46.9%, and 6.3% of people did not answer the census question.[11]

Of those at least 15 years old, 2,079 (23.3%) people had a bachelor's or higher degree, 4,614 (51.6%) had a post-high school certificate or diploma, and 2,235 (25.0%) people exclusively held high school qualifications. The median income was $43,600, compared with $41,500 nationally. 1,230 people (13.8%) earned over $100,000 compared to 12.1% nationally. The employment status of those at least 15 was 4,725 (52.9%) full-time, 894 (10.0%) part-time, and 240 (2.7%) unemployed.[11]

Individual statistical areas
Name Area
(km2)		 Population Density
(per km2)		 Dwellings Median age Median
income
Poets Block 1.24 2,427 1,957 903 36.6 years $46,000[14]
Brentwood 0.98 2,409 2,458 852 35.9 years $46,100[15]
Trentham North 1.02 2,988 2,929 1,290 41.6 years $38,500[16]
Trentham South 8.12 3,132 386 1,017 36.6 years $45,700[17]
New Zealand 38.1 years $41,500
Brentwood manor, formerly Tweed House

Education

Trentham School is a state primary school for Year 1 to 6 students,[18][19] with a roll of 373.[20] It opened in 1929.[21]

Brentwood School, a state primary school for year 1 to 6 students, opened in 1955 to deal with the overflow from Trentham School.[22] The school was closed in 2004 and merged with Trentham School.[23]

Fergusson Intermediate is a state intermediate school for Year 7 to 8 students,[24][25] with a roll of 331.[26] It opened in 1966.[27]

Upper Hutt College is a state secondary school for Year 9 to 15 students,[28] with a roll of 1,102.[29] It was founded in 1962.[30]

Hutt International Boys' School is a state-integrated Christian secondary school for Year 7 to 13 students,[31] with a roll of 655.[32] It was founded in 1991.[33]

All of these schools except Hutt International Boys' are co-educational. Rolls are as of October 2025,[34]

References

  1. ^ "2025 Triennial Elections Declaration of Result" (PDF). Electionz. Retrieved 21 October 2025.
  2. ^ "Remutaka - Official Result". electionresults. Electoral Commission. Retrieved 27 January 2026.
  3. ^ "Ikaroa-Rāwhiti – Official Result". New Zealand Electoral Commission. Retrieved 28 July 2025.
  4. ^ a b "Stats NZ Geographic Data Service". Statistical Area 3 2023 (generalised). Retrieved 29 January 2026.
  5. ^ "Subnational population estimates - Aotearoa Data Explorer". Statistics New Zealand. Retrieved 29 October 2025.
  6. ^ a b Pinehaven Progressive Association – History
  7. ^ Photo of Trentham Camp 1914–1918
  8. ^ Photo of Trentham Camp 1939
  9. ^ Colin Williams (18 November 2015). "Upper Hutt's former car assembly plant sold to Weta film group". Upper Hutt Leader/Stuff.co.nz.
  10. ^ "Our First Hundred Years... – A History of St John's Anglican Church, published in 1961 on behalf of the Parish of Trentham". St John's Anglican Church History. Archived from the original on 22 January 2016. Retrieved 4 March 2016.
  11. ^ a b c d e "Totals by topic for individuals, (RC, TALB, UR, SA3, SA2, Ward, Health), 2013, 2018, and 2023 Censuses". Stats NZ – Tatauranga Aotearoa – Aotearoa Data Explorer. Trentham (55380). Retrieved 3 October 2024.
  12. ^ "Statistical area 1 dataset for 2018 Census". Statistics New Zealand. March 2020. Poets Block (241600), Brentwood (Upper Hutt City) (241700), Trentham North (242000) and Trentham South (242200).
  13. ^ "Totals by topic for dwellings, (RC, TALB, UR, SA3, SA2, Ward, Health), 2013, 2018, and 2023 Censuses". Stats NZ – Tatauranga Aotearoa – Aotearoa Data Explorer. Retrieved 3 October 2024.
  14. ^ "Totals by topic for individuals, (RC, TALB, UR, SA3, SA2, Ward, Health), 2013, 2018, and 2023 Censuses". Stats NZ - Tatauranga Aotearoa - Aotearoa Data Explorer. Poets Block. Retrieved 3 October 2024.
  15. ^ "Totals by topic for individuals, (RC, TALB, UR, SA3, SA2, Ward, Health), 2013, 2018, and 2023 Censuses". Stats NZ - Tatauranga Aotearoa - Aotearoa Data Explorer. Brentwood (Upper Hutt City). Retrieved 3 October 2024.
  16. ^ "Totals by topic for individuals, (RC, TALB, UR, SA3, SA2, Ward, Health), 2013, 2018, and 2023 Censuses". Stats NZ - Tatauranga Aotearoa - Aotearoa Data Explorer. Trentham North. Retrieved 3 October 2024.
  17. ^ "Totals by topic for individuals, (RC, TALB, UR, SA3, SA2, Ward, Health), 2013, 2018, and 2023 Censuses". Stats NZ - Tatauranga Aotearoa - Aotearoa Data Explorer. Trentham South. Retrieved 3 October 2024.
  18. ^ "Trentham School Official School Website". trentham.school.nz.
  19. ^ "Trentham School Ministry of Education School Profile". educationcounts.govt.nz. Ministry of Education.
  20. ^ "Trentham School Education Review Office Report". ero.govt.nz. Education Review Office.
  21. ^ "About Us". Trentham School. Retrieved 29 January 2026.
  22. ^ "Brentwood School 40th anniversary; Marilyn Scott, founding pupil, and Victoria Nisbett".
  23. ^ "Final decision for Upper Hutt review".
  24. ^ "Fergusson Intermediate Official School Website". fergusson.school.nz.
  25. ^ "Fergusson Intermediate Ministry of Education School Profile". educationcounts.govt.nz. Ministry of Education.
  26. ^ "Fergusson Intermediate Education Review Office Report". ero.govt.nz. Education Review Office.
  27. ^ "Our School". Fergusson Intermediate. Retrieved 29 January 2026.
  28. ^ "Upper Hutt College Education Review Office Report". ero.govt.nz. Education Review Office.
  29. ^ "Upper Hutt College Ministry of Education School Profile". educationcounts.govt.nz. Ministry of Education.
  30. ^ "Upper Hutt College Official School Website". upperhutt.school.nz.
  31. ^ "Hutt International Boys' School Education Review Office Report". ero.govt.nz. Education Review Office.
  32. ^ "Hutt International Boys' School Ministry of Education School Profile". educationcounts.govt.nz. Ministry of Education.
  33. ^ "Hutt International Boys' School Official School Website". hibs.school.nz.
  34. ^ "New Zealand Schools Directory". New Zealand Ministry of Education. Retrieved 1 October 2025.
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