UIS: Percentage of population age 25+ with unknown educational attainment. Total by country

The percentage of the population (age 25 and over) with unknown educational attainment. This indicator is calculated by dividing the number of persons aged 25 years and above with unknown educational attainment by the total population of the same age group and multiplying the result by 100. The UNESCO Institute for...

Countries reporting
42
Highest
6.2%
Ireland
Lowest
0.0%
Hong Kong Special Administrative Region, People's Republic of China
Median
0.1%
Years covered
50
1970–2019
Data points
442

What the numbers show

UIS: Percentage of population age 25+ with unknown educational attainment. Total is currently reported for 42 countries. The highest value is 6.2% in Ireland; the lowest is 0.0% in Hong Kong Special Administrative Region, People's Republic of China.

The median across all reporting countries is 0.1%, and the mean is 0.6%.

Over the past decade 12 countries rose and 15 fell. The largest increase was in France (up 47,795.8%), and the largest decrease in Colombia (down 96.9%).

UIS: Percentage of population age 25+ with unknown educational attainm: full country ranking

#Country LatestYear 10-year changeTrend
1 Ireland 6.2% 2017 up 100.5% rising
2 Norway 4.5% 2017 up 2.9% rising
3 Denmark 3.0% 2018 down 17.5% falling
4 Sweden 1.9% 2017 up 37.0% volatile
5 Cayman Islands 1.9% 2015 up 305.7% volatile
6 Netherlands, The 1.6% 2018 up 154.8% rising
7 Switzerland 1.0% 2018 up 717.2% volatile
8 New Zealand 0.9% 2015 down 94.3% volatile
9 Türkiye, Republic of 0.9% 2017 down 87.8% volatile
10 Latvia, Republic of 0.8% 2016 volatile
11 Thailand 0.7% 2018 up 32.5% volatile
12 Honduras 0.5% 2018 up 8.0% rising
13 Chile 0.4% 2017 down 36.7% falling
14 Germany 0.3% 2018 down 10.2% volatile
15 France 0.2% 2017 up 47,795.8% volatile
16 Costa Rica 0.2% 2018 down 45.4% falling
17 South Africa 0.2% 2017 down 80.2% rising
18 Mexico 0.1% 2018 up 126.4% volatile
19 Venezuela, República Bolivariana de 0.1% 2016 down 92.9% volatile
20 Brazil 0.1% 2015 down 59.7% volatile
21 Israel 0.1% 2015 down 96.3% volatile
22 Bangladesh 0.1% 2019 up 83.6% volatile
23 Paraguay 0.1% 2018 up 21.9% volatile
24 Bolivia 0.1% 2015 down 78.1% volatile
25 Peru 0.0% 2018 down 54.8% volatile
26 Colombia 0.0% 2018 down 96.9% volatile
27 Philippines 0.0% 2017 down 82.8% volatile
28 Czech Republic 0.0% 2016 down 25.9% volatile
29 Bosnia and Herzegovina 0.0% 2016 flat
29 Austria 0.0% 2016 flat
29 Singapore 0.0% 2017 flat
29 Azerbaijan, Republic of 0.0% 2017 flat
29 United States 0.0% 2016 flat
29 Greece 0.0% 2016 flat
29 Palestine 0.0% 2016 flat
29 Canada 0.0% 1991 flat
29 Moldova, Republic of 0.0% 2015 flat
29 Lithuania, Republic of 0.0% 2016 flat
29 Italy 0.0% 2015 flat
29 Indonesia 0.0% 2016 flat
29 Finland 0.0% 2017 flat
29 Hong Kong Special Administrative Region, People's Republic of China 0.0% 2017 flat

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UIS: Percentage of population age 25+ with unknown educational attainm by country. Statizoid, drawing on UNESCO Institute for Statistics. Retrieved 18 August 2026, from https://reference.statizoid.com/stat/uis-percentage-of-population-age-25-with-unknown-educational-attainment-total/

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About this data

Indicator
UIS: Percentage of population age 25+ with unknown educational attainment. Total
Source
UNESCO Institute for Statistics
Licence
CC BY 4.0 (World Bank Open Data)
Coverage
42 places, 442 data points, 1970–2019
Last refreshed

The percentage of the population (age 25 and over) with unknown educational attainment. This indicator is calculated by dividing the number of persons aged 25 years and above with unknown educational attainment by the total population of the same age group and multiplying the result by 100. The UNESCO Institute for Statistics (UIS) educational attainment dataset shows the educational composition of the population aged 25 years and above and hence the stock and quality of human capital within a country. The dataset also reflects the structure and performance of the education system and its accumulated impact on human capital formation. For more information, visit the UNESCO Institute for Statistics website: http://www.uis.unesco.org/