Drawn to the measurements in the law (height 18 : length 25). The law does not give color codes, so we chose the colors in the drawing.
Ranks are among the 193 UN member states, from most people and from largest area.
The flag of Iceland is set by the 1944 law on the national flag: a sky-blue field with a white cross, and a red cross inside the white cross.
The height-to-length ratio is 18 to 25. The cross is 2/9 of the height wide, and the red cross 1/9. The fields next to the pole are squares, and the outer fields are the same height and twice as long.
In 2025 the population is about 398,300, the 171st most people of the 193 UN member states. That is about 1/310 of Japan’s (about 123 million).
The area is 103,000 km², the 104th largest of the 193. That is about 1/3 of Japan’s area.
If we work out the number of people per square kilometer (population density), it is about 3.9.
Iceland joined the United Nations on November 19, 1946.
It was a member before Japan joined in 1956.
Countries that joined on the same day: Afghanistan, Sweden.
There is no single right answer. Talking it over with someone at home is a good way to learn.