With 5,640 residents spread over 135.7 km², Vaux-Sur-Sûre has a low-density settlement pattern and a housing stock dominated by houses. The average age is 36; women make up 50.4% of residents, and 79% of inhabitants own their dwelling. Average net income is €16,865 per person per year. Nationalities are 97.2% Belgian, 1.1% French, 0.3% Luxembourgish, 0.2% Italian, 0.2% Dutch, 0.1% Portuguese, 0.1% Guinean and 0.8% other. Apartments are a small part of the local building mix: apartment buildings represent 3.6% of the stock, while houses account for 96.4%. Across building types, 73.9% are open-type houses, farms or castles, 16.5% semi-closed houses, 3.5% buildings and flat blocks, 2.9% closed houses, 2.1% other buildings and 1.1% commercial houses. The average home has 6.6 rooms; buildings date on average from around 1941.
There is 1 flat for sale, listed at €189,000, which is both the current lowest and highest asking price for this property type. The municipality has 24 properties available for sale or rent in total. For road connections, the A26/E25 entrance towards Liège, Bastogne and Neufchâteau is 3 minutes by car from the town centre, and the A4/E411–E25 entrance towards Brussels, Namur, Arlon and Luxembourg City is 8 minutes away. The N85 and N848 are also accessible. Public transport includes 7 bus lines; listed TEC services include line 413 from Bastogne to Neufchâteau, line 413/2 from Juseret through Traimont and Sibret to Bastogne, and lines 2, 6 and 601. Nearby stations are Neufchâteau, Bastogne-Sud, Bastogne-Nord, Libramont and Marbehan.
The commune has 5 nurseries, 9 nursery schools and 9 primary schools, including Ecole Fondamentale Communale De Vaux-Sur-Sûre III, Ecole Fondamentale Autonome De Sibret and Ecole De Vaux-Sur-Sûre II. There is no secondary school locally. The listed supermarket is 1 Match / Smatch. Business activity includes 122 mixed-farming corporations, 27 hairdressing and beauty-treatment companies, 17 veterinary firms, 16 specialised construction businesses and 16 landscape-service companies. No shared bicycles or shared cars are currently available in the commune, and there is no known EV charging station. Liège Airport can be reached in 66 minutes by car or 207 minutes by public transport.