Census figure of most countries in West Africa is inaccurate because of

The inaccurate census figure of most countries in West Africa is because of the high degree of illiteracy. Illiteracy makes it difficult for people to understand the importance of participating in the census exercise. Some people may also be afraid to reveal their actual numbers due to suspicion or distrust of the government. As a result, census figures tend to be lower than the actual population, making it difficult for government planners to accurately allocate resources and plan for the future.