Konstanz: population facts (official)
A stand-alone background page: what the city publishes about residents and nationalities, plus how that fits a tight housing market. This is not "which nationality Googles flats most" — it is register-based structure data.
Primary source
The city issues Konstanz in Zahlen (2024, PDF, German). For country-of-citizenship breakdowns, use the table Wohnbevölkerung nach Staatsangehörigkeit. Always take the current figures from the PDF; the ballpark examples below can move with each release.
Foreign citizenship (register data)
In recent editions, roughly one in five to six residents are people without German citizenship — often cited around 17–18 % of the registered population, depending on the reference year in the publication. "Passport" is a statistical label, not a claim about how any group searches for housing.
Larger groups (illustrative — confirm in the table)
The same table usually shows substantial groups with, for example, Italian (on the order of ~1,700 people), Turkish (~1,100), Croatian (~1,000) citizenship. After 2022, many German city statistics show a marked rise in residents with Ukrainian citizenship — a real jump in the data, not a forecast.
Universities and international students
University of Konstanz — international students and similar HTWG material explain a large share of non-local demand for WG rooms. That is student mobility, not a full picture of the rental stock.
Practical links
Renting in Konstanz · Self-disclosure tool · Application tracker