Huldenberg has 9,921 inhabitants across 40 km². The average age is close to 41, and 50.6% of residents are women. Home ownership is 78%; average net income is €22,682 per year, and households own about 1.5 cars. The population is 92.7% Belgian, 1.3% Dutch, 1.2% Romanian, 0.6% French, 0.5% British, 0.4% Polish, 0.3% Portuguese and 2.9% other nationalities. Houses make up 94.5% of dwellings in the municipality, compared with 5.5% apartment buildings. Homes average 6.7 rooms, and the average construction year is 1956. The housing stock includes 63.5% open-type houses, farms and castles, 17.4% semi-detached houses, 8% closed-type houses, 5.2% buildings and apartment blocks, 4.1% other buildings and 1.8% commercial houses.
There are 13 houses for sale. The average asking price is €546,182, with current listings ranging from €349,000 to €776,000. These figures sit alongside a housing stock where open-type houses, farms and castles account for 63.5% of buildings. The municipality’s average of 6.7 rooms per dwelling gives further context for the local housing stock; it is not a count specific to homes currently listed for sale.
For road travel, access to the A4/E411–E25 towards Brussels, Namur, Arlon and Luxembourg is 7 minutes from the centre of Huldenberg. The R0 Brussels ring is 10 minutes away, and the N253 is also an accessible route. De Lijn buses serving the area include lines 337 between Leuven and Wavre, 344 between Herrmann-Debroux, Overijse and Hamme-Mille, 349 between Etterbeek, Huldenberg and Ottenburg, 395 between Leuven, Overijse and Hoeilaart, and school bus 595 between Leuven and Hoeilaart. The nearest stations to the town centre are Sint-Joris-Weert, Pécrot, Florival, Oud-Heverlee and Eerken / Archennes. No metro or tram service is listed. Brussels Airport is 20 minutes away by car or 80 minutes by public transport.
Families have access to 6 nurseries, 5 nursery schools and 5 primary schools; there is no secondary school in the municipality. Named options include Mini-Kribbe Balou and Babybiebelbox for childcare, and Gemeentelijke Basisschool Den Elzas and Gemeentelijke Basisschool Spring In 'T Veldeke among the primary schools. The local supermarket listed is 1 SPAR. No shared bicycles, shared cars or known charging stations are available in the municipality. House buyers can also find local businesses in fields including business and management consultancy, landscape services, hairdressing and beauty treatment, computer consultancy, legal work and mixed farming.