Durham Region Human Population Growth, Logistic Model with Migration

This model shows how the population of Durham Region could change over 100 years. Population increases through births and immigration and decreases through deaths and emigration. The model also includes a population capacity, which causes the birth rate to decrease as the population becomes larger. This allows the model to show logistic population growth while also accounting for migration.

ASSUMPTIONS: The population capacity of 1.5 million is a modelling value used to demonstrate logistic growth and is not an official maximum population for Durham Region. The birth rate, death rate, immigration, and emigration values are simplified estimates that remain constant during the simulation. The delay and “population X years ago” parts of the example model were not included because I did not have a reasonable Durham-specific delay value, so the current population is used directly to adjust the birth rate.