Riversdale is described as a rural settlement by Statistics New Zealand. It covers , and had an estimated population of as of with a population density of people per km2. It is part of the much larger Riversdale-Piano Flat statistical area. Riversdale had a population of 408 at the
2018 New Zealand census, an increase of 9 people (2.3%) since the
2013 census, and unchanged since the
2006 census. There were 168 households, comprising 207 males and 201 females, giving a sex ratio of 1.03 males per female, with 78 people (19.1%) aged under 15 years, 63 (15.4%) aged 15 to 29, 174 (42.6%) aged 30 to 64, and 93 (22.8%) aged 65 or older. Ethnicities were 89.0% European/
Pākehā, 13.2%
Māori, 1.5%
Pasifika, 3.7%
Asian, and 1.5% other ethnicities. People may identify with more than one ethnicity. Although some people chose not to answer the census's question about religious affiliation, 47.1% had no religion, 47.1% were
Christian and 0.7% had other religions. Of those at least 15 years old, 30 (9.1%) people had a bachelor's or higher degree, and 93 (28.2%) people had no formal qualifications. 60 people (18.2%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 165 (50.0%) people were employed full-time, 51 (15.5%) were part-time, and 6 (1.8%) were unemployed.
Riversdale-Piano Flat Riversdale-Piano Flat statistical area covers == Railway ==