Dairy Flat
Dairy Flat is a rural district 8 km south of Orewa and 28 km north of central Auckland in the North Island of New Zealand. Until the early 1990s most of the district was in dairy farms of 40 to 60 hectares. With the growth of Auckland and the extension of the State [Highway 1 (New Zealand)|Northern Motorway] into the area, these are being gradually subdivided into lifestyle blocks of around 2 to 5 hectares, many of which are grazing sheep, horses, beef cattle or deer. Although it still retains a rural character, it is counted as part of the Auckland urban area in official statistics.
Geography
Dairy Flat has a small village shopping centre and the Dairy Flat Primary School. A major facility is the North Shore Aerodrome owned and operated by the North Shore Aero Club. In addition to aero club and private aircraft, the field is used by Barrier Air to run a scheduled air service in passenger aircraft to Great Barrier Island, some 40 nautical miles offshore of the coast. The major road is the Northern Motorway, and secondarily Urban Route 31, which was formerly State Highway 17 and, before the extension of the motorway, State Highway 1.History
In the 1850s, Maurice and Mary Kelly established a dairy farm in the area, likely at the location of the North Shore Aerodrome. They named the adjacent stream Dairy Stream, and Dairy Flat was in turn named after the stream. The first known references to the name Dairy Flat come from 1865. The area was a plentiful source of kauri gum, which was sold at the local kauri gum camps: Bull Town on Poyntons Farm, Tiger Camp, and Horse Shoe Bush/Nanahu. Maurice Kelly took over the family timber felling business in the 1860s and 1870s. In 1878, Dairy Flat School was established.Lime quarrying began in the early 1920s. Local residents lobbied for the area's name to be changed from Dairy Flat to Pine Valley in 1931, but were unsuccessful. The area started to be used for flights in the early 1960s, and in 1963 the North Shore Aero Club was established, operating from North Shore Aerodrome.
The Redvale lime quarry started operating in the 1960s. Waste Management Incorporated bought the quarry site in 1988 and began operating it as Redvale Landfill in 1993. As of 2025 it was taking more than half of Auckland's rubbish. Methane created by the decomposing waste at the landfill is used to generate electricity. Redvale Landfill and Energy, managed by Waste Management NZ, is consented until 2028.
The area was administered by Rodney County Council until 1989, then by Rodney District Council from 1989 to 2010. It has been administered by Auckland Council since 2010 and is in its Rodney ward.
The Auckland Surf Park is a heated artificial surfing lagoon being built in Dairy Flat and expected to open in 2027.
Demographics
Dairy Flat covers and had an estimated population of as of with a population density of people per km2.Dairy Flat had a population of 4,977 in the 2023 New Zealand census, an increase of 363 people since the 2018 census, and an increase of 774 people since the 2013 census. There were 2,553 males, 2,409 females and 18 people of other genders in 1,542 dwellings. 2.7% of people identified as LGBTIQ+. The median age was 40.5 years. There were 840 people aged under 15 years, 1,020 aged 15 to 29, 2,403 aged 30 to 64, and 714 aged 65 or older.
People could identify as more than one ethnicity. The results were 76.9% European ; 8.9% Māori; 2.3% Pasifika; 19.0% Asian; 1.2% Middle Eastern, Latin American and African New Zealanders ; and 2.5% other, which includes people giving their ethnicity as "New Zealander". English was spoken by 94.1%, Māori language by 1.9%, Samoan by 0.2%, and other languages by 22.3%. No language could be spoken by 1.4%. New Zealand Sign Language was known by 0.3%. The percentage of people born overseas was 35.0, compared with 28.8% nationally.
Religious affiliations were 28.0% Christian, 0.5% Hindu, 0.8% Islam, 0.2% Māori religious beliefs, 0.7% Buddhist, 0.5% New Age, 0.2% Jewish, and 1.3% other religions. People who answered that they had no religion were 61.6%, and 6.4% of people did not answer the census question.
Of those at least 15 years old, 897 people had a bachelor's or higher degree, 2,085 had a post-high school certificate or diploma, and 909 people exclusively held high school qualifications. The median income was $47,300, compared with $41,500 nationally. 753 people earned over $100,000 compared to 12.1% nationally. The employment status of those at least 15 was that 2,220 people were employed full-time, 627 were part-time, and 111 were unemployed.
| Name | Area | Population | Density | Dwellings | Median age | Median income |
| Dairy Flat North | 18.76 | 1,797 | 96 | 519 | 38.5 years | $42,500 |
| Dairy Flat West | 30.98 | 1,524 | 49 | 507 | 40.9 years | $51,500 |
| Dairy Flat South | 14.40 | 1,659 | 115 | 519 | 42.2 years | $49,300 |
| New Zealand | 38.1 years | $41,500 |