Beloeil is home to 14,068 residents across 62.3 km². The average age is about 40, and 71% of residents own their homes. Average net income per person is €16,885 a year. Nationalities are 93.9% Belgian, 3.9% French, 0.9% Italian, 0.2% Romanian, 0.1% Portuguese, 0.1% American, 0.1% Spanish and 0.7% other. Women represent 50.5% of the population. Houses form the larger part of the local housing stock: 94% of dwellings are houses, compared with 6% in apartment buildings. The average home has 6.1 rooms, and buildings date to around 1921 on average.
Across the building stock, 36.4% are closed-type houses, 28.8% open-type houses, farms and castles, and 25.8% semi-closed-type houses. Buildings and flat blocks make up 5.8%, commercial houses 2.4%, and other types 0.8%. There are currently 0 houses for rent in Beloeil, so no monthly asking-price range is available for houses. The municipality’s current average listed rent for a house is €0 per month.
The N50, N505, N506, N526 and N527 provide road connections through the municipality. Driving from the centre to access the A7 / E19–E42, towards Halle, Nivelles, Mons and Valenciennes, takes 12 minutes. The A8 / E429–E42 access, on the route towards Halle, Tournai and Lille, is 17 minutes away by car. Bus services include TEC lines 13 (Saint-Ghislain–Quevaucamps), 80 (Blaton–Quevaucamps / Bernissart), 81 (Ath–Blaton), 86A (Leuze–Blaton) and 86C (Leuze–Péruwelz). The nearest stations to the centre are Blaton, Harchies, Maffle, Mevergnies-Attre and Ath.
Childcare and education options comprise 19 nurseries, 10 nursery schools and 10 primary schools; there is no secondary school in the municipality. Supermarkets include 2 Delhaize, 1 Intermarché and 1 Colruyt. Shared bicycles and shared cars are not available in Beloeil, and there is no known EV charging station. Wevelgem Airport is 41 minutes away by car, with a public-transport journey of 150 minutes.