Overall, urbanization increased in all four countries over the period, with Malaysia showing the highest urban population percentage throughout and Indonesia starting the lowest but rising steadily. All countries are expected to continue this upward trend until 2040.
In 1970, Malaysia already had the highest urban population, with around 35%, and this figure rose rapidly, surpassing 70% by 2020. It is projected to reach nearly 85% by 2040. The Philippines followed closely behind in the early years, starting at about 30% and increasing steadily to just under 50% by 2020, with a further rise predicted to around 55% by 2040.
Thailand’s urban population was similar to the Philippines in 1970 but experienced a slower increase, overtaken by the Philippines in the late 1980s. However, it is expected to catch up and reach about 55% by 2040. Indonesia had the lowest urban population in 1970, at under 20%, but it has seen a significant and steady rise, projected to approach 60% by 2040.
In summary, while urban growth occurred in all four countries, Malaysia has consistently led in urbanization, and Indonesia shows the most dramatic growth over the entire period.