Newfield is a suburb in the New Zealand city of Invercargill.

The sign at the Māori secondary school Te Wharekura O Arowhenua in Newfield was defaced with racist graffiti in December 2020. Police launched an investigation, and increased patrols in the Newfield area to reassure the community.

Newfield covers 1.43 km (0.55 sq mi) and had an estimated population of 2,140 as of June 2023, with a population density of 1,497 people per km.

Historical population

Year	Pop.	±% p.a.
2006	2,757	—
2013	2,754	−0.02%
2018	2,787	+0.24%
Source:

Before the 2023 census, Newfield had a larger boundary, covering 2.01 km (0.78 sq mi). Using that boundary, Newfield had a population of 2,787 at the 2018 New Zealand census, an increase of 33 people (1.2%) since the 2013 census, and an increase of 30 people (1.1%) since the 2006 census. There were 1,092 households, comprising 1,347 males and 1,440 females, giving a sex ratio of 0.94 males per female. The median age was 39.1 years (compared with 37.4 years nationally), with 561 people (20.1%) aged under 15 years, 513 (18.4%) aged 15 to 29, 1,170 (42.0%) aged 30 to 64, and 543 (19.5%) aged 65 or older.

Ethnicities were 87.6% European/Pākehā, 18.6% Māori, 4.6% Pasifika, 3.7% Asian, and 1.8% other ethnicities. People may identify with more than one ethnicity.

The percentage of people born overseas was 8.9, compared with 27.1% nationally.

Although some people chose not to answer the census's question about religious affiliation, 52.1% had no religion, 37.0% were Christian, 1.0% had Māori religious beliefs, 0.4% were Hindu, 0.8% were Muslim, 0.2% were Buddhist and 1.6% had other religions.

Of those at least 15 years old, 204 (9.2%) people had a bachelor's or higher degree, and 651 (29.2%) people had no formal qualifications. The median income was $28,100, compared with $31,800 nationally. 201 people (9.0%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 1,083 (48.7%) people were employed full-time, 300 (13.5%) were part-time, and 63 (2.8%) were unemployed.

Newfield Park School is a contributing primary school for years 1 to 6 with a roll of 241 students as of August 2024. It was formed in 2005 by the merger of Newfield School and Rockdale Park School.

Te Wharekura o Arowhenua is a composite school for years 1 to 13 with a roll of 202 students. It is a Kura Kaupapa Māori which teaches in the Māori language. The school opened in 1992 as Te Kura Kaupapa Māori o Arowhenua, a primary school. In 1999, it moved to its current site (formerly that of Cargill High School), changed its name, and expanded to include secondary students.