[3] As part of the Auckland railway electrification project, the $100 million EMU maintenance and stabling depot was built on 4.4 hectares of the old Winstone Quarry in Wiri, located next to the South-Western Motorway and bordered by Roscommon and Wiri Station Roads.

[4] The Wiri railway station was opened from 1913 and closed in 2005 due to low patronage, the EMU maintenance facility was built on the former site.

Auckland Region Women's Corrections Facility (ARWCF) is located in Wiri.

[5] The adjacent Auckland South Corrections Facility is a high security men's prison which opened in 2015.

[6] It is operated by Serco New Zealand under a Public Private Partnership with the Department of Corrections.

Much of the land within the suburb of Wiri was formed through lava flows originating from these mountains.

The results were 21.3% European (Pākehā); 31.1% Māori; 43.8% Pasifika; 22.4% Asian; 1.6% Middle Eastern, Latin American and African New Zealanders (MELAA); and 0.6% other, which includes people giving their ethnicity as "New Zealander".

[13] Of those at least 15 years old, 702 (13.9%) people had a bachelor's or higher degree, 2,478 (49.0%) had a post-high school certificate or diploma, and 1,875 (37.1%) people exclusively held high school qualifications.