The Department of Statistics and Urban Research publishes a current small-scale population forecast for the city of Erlangen in the "Statistik aktuell" series in issue 3/2025. Based on the population as at 31.12.2024, the population is projected up to 2040 on the basis of small-scale birth, death and migration rates. The planned new development areas play a key role in the forecast calculation.

For years, Erlangen has seen significant population growth due to a migration surplus, which was only slowed slightly in 2020 by the coronavirus pandemic. The main resident population is expected to increase from the current 120,000 to around 127,000 over the next ten years. This population growth is only possible thanks to ongoing construction activity: the largest increase in population is expected in the Forschungszentrum area as a result of the Siemens Stadtquartier Süd. Large population increases are also foreseeable in Stubenloh, Büchenbach West and in the Rathausplatz district.

The age structure of the population will shift due to the gradual progression of baby boomers into retirement age by 2040: The 65 to 80 age group is expected to grow by almost a quarter.