Péruwelz has a population of 17,159 spread over 61 km². Residents have an average age close to 41, and women account for 51% of the population. Around 70% own their homes, while average annual net income is €15,819. The population is 90.8% Belgian, 6.8% French, 1% Italian, 0.2% Romanian, 0.1% Spanish, 0.1% Moroccan, 0.1% Polish and 0.8% other nationalities. Houses make up 92.4% of the local dwelling stock, with apartment buildings representing 7.6%. Buildings date from around 1920 on average, and homes have an average of 5.8 rooms. The building mix includes 30.8% open-type houses, farms or castles, 29.7% closed-type houses and 28.1% semi-closed-type houses. Buildings and flat blocks account for 7.3%, commercial houses for 3% and other types for 1%.
The rental market has 3 houses available. The average monthly rent is €878; listed rents run from €725 to €1,060 per month. From the centre, the A16 / E42 between Mons and Tournai is 11 minutes away by car. The A7 / E19 - E42 motorway towards Halle, Nivelles, Mons and Valenciennes is 13 minutes away. Main roads crossing Péruwelz include the N50, N60, N60g, N60e and N60f. For bus travel, 8 lines serve the municipality, including TEC line 491 from Tournai to Mortagne / Péruwelz, line 78 from Saint-Ghislain to Péruwelz, line 8 from Dour to Erquennes, line 86A from Leuze to Blaton and line E40 from Ath to Péruwelz. The nearest stations to the centre are Péruwelz, Callenelle, Blaton, Maubray and Harchies.
Childcare and education are represented by 16 nurseries, 12 nursery schools, 12 primary schools and 5 secondary schools. Named examples include Le Nid D'Anges, A. P., Ecole Fondamentale De Bon-Secours, Ecole Fondamentale Communale Du Centre, Athenee Royal Peruwelz and Institut Saint-Charles. For groceries and other regular shopping, there are 2 SPAR stores, 2 Delhaize stores, 1 Trafic, 1 Intermarché and 1 Colruyt. Péruwelz has 4 charging stations for electric vehicles. There is no shared-bike service, and shared cars are not offered in the municipality. Wevelgem Airport is 34 minutes away by car; the public-transport journey takes 108 minutes.