Sint-Pieters-Leeuw currently has 2 flats for rent. Monthly rents range from €950 to €1,500, and the average is €1,225. The municipality has 34,228 residents over 40.7 km². The average age is about 40, while 68% of residents own their homes. Average net income is €18,410 per person per year, and women account for 51.1% of the population. The nationality breakdown is 84.7% Belgian, 2.6% Italian, 2.1% Portuguese, 1.9% Romanian, 1.6% Spanish, 1.4% Polish, 1.1% Moroccan and 4.6% other. The average household owns about 1.2 cars.
Apartment buildings make up 25.3% of the building stock; houses account for 74.7%. The wider building-type mix includes 24.5% buildings and flat blocks, 34.4% closed-type houses, 19.9% open-type houses, farms or castles, 18.2% semi-closed houses, 1.9% commercial houses and 1% other types. Buildings were generally built around 1954, and accommodation has an average of 5.6 rooms or fewer. The R0 entrance is a 5-minute drive from the centre. Access to the A8 / E429 - E42 towards Halle, Tournai and Lille takes 8 minutes, and the N6 and N261 are accessible too.
Public transport includes De Lijn bus lines 142, 144, 170 and 171, together with STIB line 50. The nearest stations to the centre are Lot, Buizingen, Huizingen, Ruisbroek and Beersel; no metro or tram routes are listed. There are 9 nurseries, 10 nursery schools and 10 primary schools in the municipality, plus Go! Middenschool Lennik. Named examples are Hotel Samson and De Kinderdroom nurseries, Vrije Basisschool - Don Bosco and Vrije Basisschool - Jan Ruusbroec nursery schools, and Gemeentelijke Basisschool - Wegwijzer and Vrije Basisschool - Don Bosco primary schools.
For shopping, residents have 3 Carrefour and 3 Delhaize branches, plus 1 Albert Heijn, 1 Louis Delhaize, 1 Delitraiteur, 1 Aldi, 1 Lidl and 1 Colruyt. Four stations provide electric-car charging. There are no shared bicycles or shared cars in Sint-Pieters-Leeuw. Brussels Airport is 24 minutes away by car or 72 minutes by public transport. Current flat rents span €950 to €1,500 per month, alongside the local road and transit connections and everyday services described here.