In Census 2020, the population rose by about (1,147) thousand people compared to Census 2010, bringing the population in Census 2020 to almost (2,846) thousand people, which represents an increase of (67.5%) compared to Census 2010. The annual growth rate between Census 2010 and Census 2020 amounted to (5.3%), with a decrease in the annual growth rate compared to that between 2004 and 2010 censuses, when it was (14.8%). The increase in male population represented the largest percentage of population increase, as the male contribution to that increase was (65.4%), while the female population accounted for (34.6%) of the total increase.

As for the total number of the population by gender, the male population increased by (58.4%) to reach (2,035) thousand people, which represents (71.5%) of the total population in Census 2020. This percentage declined from Census 2010 as males were (75.6%) of the total population. On the other hand, the number of females almost doubled by (95.7%) to reach (812) thousand people, which represents (28.5%) of the total population in Census 2020, an increase from the percentage of females in Census 2010, which amounted to (24.4%).

In general, the population increased in all age groups in Census 2020 compared to Census 2010. Age group (30-34) topped the list of the highest increase in numbers, with an increase of approximately (219) thousand people.

As for the increase rate in each age group, the highest increase rate occurred in the (60+) age groups, as the numbers of elderly in each of these groups doubled at least once, and the age group (65-69) topped the list of the highest increase in the same category, with an increase of (180.5 %).

Population density increased in Census 2020 by (67.5%) compared to Census 2010, amounting to about (244.6) people per square kilometer, compared to (146) people per square kilometer in Census 2010. As usual, Doha Municipality topped the highest population density, reaching (5,344.1) people per square kilometer of the area of Doha Municipality, after it had recorded only (3,590.9) people in Census 2010. Despite this, its percentage of the total population decreased from (46.9%) in 2010 to (41.7%) in 2020. Um Salal Municipality maintained the second place in terms of population density, which reached (471) people, while Al-Rayyan Municipality occupied the third place, with a population density of (337.5) people. It should be noted that (41.7%) of the total population resides in Doha Municipality, while (29%) of the total population resides in Al Rayyan Municipality, which is the second highest percentage of the population in municipalities.

The percentage of Qataris who obtained a high school certificate or higher increased at the expense of the less educated groups, as the percentage of Qataris with a secondary certificate reached (29.2%) of the total Qataris (10 years or more) compared with (27.9%) in Census 2010. Also, the percentage of Qataris who obtained a University degree or higher amounted to (33.9%), compared to (20.3%) in Census 2010. This trend was also noticeable among the non-Qatari population as well.

The results of Census 2020 showed that 54.9% of Qataris (15 years and above) are married, and that 38.8% have never been married, which is very close to their percentages in 2010 Census. However, despite such close ratios, their numbers have increased in Census 2020 compared to Census 2010. As for the divorced, their percentage increased to reach (4.3%) in Census 2020, compared to (2.3%) in Census 2010 for total Qataris (15 years and above), while the percentage of widows decreased, reaching (2.0%) compared to (3.4%) in Census 2010.

In terms of distribution by gender, the results showed that (55.7%) of Qatari males and (54.2%) of females are married, while the percentage of males and females who have never been married reached (40.7%) and (37.1%), respectively. As for the remaining percentage, it was distributed between divorced and widowed, reaching (3.3%) for divorced males and (5.2%) for divorced females, and the percentage of widowed males and females was (0.3%) and (3.5%), respectively, of the total Qataris (15 years and above) in Census 2020.