Source: ucpage / iStock via Getty Images
15. United States
> Avg number of people per household: 2.5
> Households without children: 66.6%
> Population: 331,501,080
Source: pixdeluxe / E+ via Getty Images
14. Australia
> Avg number of people per household: 2.6
> Households without children: 37.8%
> Population: 25,693,267
Source: nazar_ab / E+ via Getty Images
13. New Zealand
> Avg number of people per household: 2.7 (tie)
> Households without children: 67.0%
> Population: 5,090,200
Source: stock_colors / E+ via Getty Images
12. Romania
> Avg number of people per household: 2.7 (tie)
> Households without children: 65.1%
> Population: 19,257,520
Source: Nadezhda1906 / iStock via Getty Images
11. Malta
> Avg number of people per household: 2.7 (tie)
> Households without children: 63.1%
> Population: 515,332
