There were 4,512 live births in Iceland in 2020. The number of boys was 2,385 and the number of girls 2,127, i.e. 1,121 boys for every 1,000 girls. This is an increase in the number of births from the previous year when 4,452 children were born. The total fertility rate was 1.72, compared with 1.75 in 2019. The total fertility rate peaked during the late 1950s and early 1960s when the total fertility rate for the years 1960 and 1959 was 4.27 and 4.24, respectively.

Age-specific fertility rate highest among women aged 30 to 34
The age of mothers at the birth of a child has increased on average in recent decades. The mean age of primiparas in 2020 was 28.6 years, compared with less than 22 years in the 1970s. For the second time since 1932, age-specific fertility rate is highest among women aged 30 to 34. Women in that age group had 113.1 children per 1,000 women in 2020.