Derived from http://www.stats.govt.nz/Census/2013-census/data-tables/meshblock-dataset.aspx

res_pop - 2013 census usually resident population auckland_r - distance in metres from this meshblock to the nearest Auckland railway station wellington - distance in metres from this meshblock to the nearest Wellington railway station (these were calculated for http://transportblog.co.nz/2014/11/02/auckland-and-wellington-per-capita-train-use/) pop_densit - population density in residents per square kilometre

Statistical Area 2 2023 update

SA2 2023 is the first major update of the geography since it was first created in 2018. The update is to ensure SA2s are relevant and meet criteria before each five-yearly population and dwelling census. SA2 2023 contains 135 new SA2s. Updates were made to reflect real world change of population and dwelling growth mainly in urban areas, and to make some improvements to their delineation of communities of interest.

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Description

This dataset is the definitive version of the annually released statistical area 2 (SA2) boundaries as at 1 January 2023 as defined by Stats NZ. This version contains 2,395 SA2s (2,379 digitised and 16 with empty or null geometries (non-digitised)).

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SA2 is an output geography that provides higher aggregations of population data than can be provided at the statistical area 1 (SA1) level. The SA2 geography aims to reflect communities that interact together socially and economically. In populated areas, SA2s generally contain similar sized populations.

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The SA2 should:

form a contiguous cluster of one or more SA1s,

excluding exceptions below, allow the release of multivariate statistics with minimal data suppression,

capture a similar type of area, such as a high-density urban area, farmland, wilderness area, and water area,

be socially homogeneous and capture a community of interest. It may have, for example:

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• a shared road network,
• shared community facilities,
• shared historical or social links, or
• socio-economic similarity,

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form a nested hierarchy with statistical output geographies and administrative boundaries. It must:

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• be built from SA1s,
• either define or aggregate to define SA3s, urban areas, territorial authorities, and regional councils.

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SA2s in city council areas generally have a population of 2,000–4,000 residents while SA2s in district council areas generally have a population of 1,000–3,000 residents.

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In major urban areas, an SA2 or a group of SA2s often approximates a single suburb. In rural areas, rural settlements are included in their respective SA2 with the surrounding rural area.

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SA2s in urban areas where there is significant business and industrial activity, for example ports, airports, industrial, commercial, and retail areas, often have fewer than 1,000 residents. These SA2s are useful for analysing business demographics, labour markets, and commuting patterns.

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In rural areas, some SA2s have fewer than 1,000 residents because they are in conservation areas or contain sparse populations that cover a large area.

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To minimise suppression of population data, small islands with zero or low populations close to the mainland, and marinas are generally included in their adjacent land-based SA2.

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Zero or nominal population SA2s

To ensure that the SA2 geography covers all of New Zealand and aligns with New Zealand’s topography and local government boundaries, some SA2s have zero or nominal populations. These include:

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• SA2s where territorial authority boundaries straddle regional council boundaries. These SA2s each have fewer than 200 residents and are: Arahiwi, Tiroa, Rangataiki, Kaimanawa, Taharua, Te More, Ngamatea, Whangamomona, and Mara.
• SA2s created for single islands or groups of islands that are some distance from the mainland or to separate large unpopulated islands from urban areas
• SA2s that represent inland water, inlets or oceanic areas including: inland lakes larger than 50 square kilometres, harbours larger than 40 square kilometres, major ports, other non-contiguous inlets and harbours defined by territorial authority, and contiguous oceanic areas defined by regional council.
• SA2s for non-digitised oceanic areas, offshore oil rigs, islands, and the Ross Dependency. Each SA2 is represented by a single meshblock. The following 16 SA2s are held in non-digitised form (SA2 code; SA2 name):

400001; New Zealand Economic Zone, 400002; Oceanic Kermadec Islands, 400003; Kermadec Islands, 400004; Oceanic Oil Rig Taranaki, 400005; Oceanic Campbell Island, 400006; Campbell Island, 400007; Oceanic Oil Rig Southland, 400008; Oceanic Auckland Islands, 400009; Auckland Islands, 400010 ; Oceanic Bounty Islands, 400011; Bounty Islands, 400012; Oceanic Snares Islands, 400013; Snares Islands, 400014; Oceanic Antipodes Islands, 400015; Antipodes Islands, 400016; Ross Dependency.

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SA2 numbering and naming

Each SA2 is a single geographic entity with a name and a numeric code. The name refers to a geographic feature or a recognised place name or suburb. In some instances where place names are the same or very similar, the SA2s are differentiated by their territorial authority name, for example, Gladstone (Carterton District) and Gladstone (Invercargill City).

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SA2 codes have six digits. North Island SA2 codes start with a 1 or 2, South Island SA2 codes start with a 3 and non-digitised SA2 codes start with a 4. They are numbered approximately north to south within their respective territorial authorities. To ensure the north–south code pattern is maintained, the SA2 codes were given 00 for the last two digits when the geography was created in 2018. When SA2 names or boundaries change only the last two digits of the code will change.

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For more information please refer to the Statistical standard for geographic areas 2023.

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Generalised version

This generalised version has been simplified for rapid drawing and is designed for thematic or web mapping purposes.

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Macrons

Names are provided with and without tohutō/macrons. The column name for those without macrons is suffixed ‘ascii’.

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Digital data

Digital boundary data became freely available on 1 July 2007.

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To download geographic classifications in table formats such as CSV please use Ariā

The New Zealand infrastructure industry presents a robust growth trajectory, exhibiting a Compound Annual Growth Rate (CAGR) exceeding 3.00% from 2019 to 2033. Driven by government initiatives focusing on upgrading aging infrastructure, increasing urbanization, and a commitment to sustainable development, the market is experiencing significant expansion. Key segments like transportation infrastructure (railways, roads, airports, and waterways) and social infrastructure (schools, hospitals, and defense projects) are witnessing substantial investments. The burgeoning tourism sector further fuels demand for improved transport links and upgraded facilities. While specific market size figures for 2019-2024 are not provided, considering a projected CAGR above 3% and a 2025 market size (let's assume a value of $5 billion for illustrative purposes, acknowledging this is an estimation based on industry knowledge and commonly observed market size in comparable economies), we can project considerable future growth. Significant opportunities exist for both domestic and international companies involved in construction, engineering, and related services. However, the industry faces certain challenges. These include potential labor shortages, supply chain disruptions, and the increasing costs of raw materials. Effective project management, sustainable procurement practices, and skilled workforce development will be critical for sustained growth. The regional distribution is concentrated in major cities such as Wellington, Auckland, and Hamilton, reflecting their higher population density and economic activity. Nevertheless, there is potential for expansion into other regions as government infrastructure projects are implemented nationwide. The diverse range of infrastructure projects, coupled with ongoing government investment, positions the New Zealand infrastructure market for continued, albeit nuanced, expansion. The presence of both international players like Obayashi Corporation and local firms such as Fulton Hogan, demonstrates a dynamic and competitive landscape. Recent developments include: November 2022: Hawkins, a construction company, was awarded a contract to build the Court Theatre's new central city home by Christchurch City Council. The Council funded more than USD 46 million toward the development of the Performing Arts Precinct, which includes the construction of The Court Theatre, the public realm, and landscaping., November 2022: Fulton Hogan, a construction company, completed the first of four-floor slab pours for the new Redoubt Reservoir project. The construction work in the reservoir includes 650 ton of steel reinforcing, and the project is expected to be completed in March 2024.. Notable trends are: Increasing Demand for Transport Infrastructure Driving the Market.