The four stages of the Demographic Transition Model (DTM) in order from stage one to stage four are:
- Stage One: High Fluctuating - Characterized by high birth rates and high death rates, leading to a stable population with low growth.
- Stage Two: Early Expanding - Birth rates remain high while death rates begin to fall, resulting in rapid population growth.
- Stage Three: Late Expanding - Birth rates start to decline as a result of social changes and improved economic conditions, leading to slower population growth.
- Stage Four: Low Fluctuating - Both birth rates and death rates are low, resulting in a stable population with little growth.
Some models include a fifth stage that represents declining population, but the four stages listed above are the most commonly referenced.