Martelange has 1,876 inhabitants across 30 km². The average age is 37, and men make up 50.9% of the population. Residents are 87% Belgian, 2.9% French, 2.8% Luxembourgish, 1.9% Portuguese, 1% Italian, 0.9% Romanian, 0.6% Afghan and 2.9% other nationalities. Average annual net income per person is €17,721. Home ownership is common: 68% of residents own their homes. The municipality has 5 houses for sale, with a current average asking price of €388,800. The listed range is €125,000 to €685,000.
Houses account for 91.8% of Martelange’s buildings, compared with 8.2% for apartment buildings. The building stock dates on average to around 1933, and accommodation has an average of 5.9 rooms. Building types include 46.7% open houses, farms and castles, 26% semi-closed houses, 12.9% closed houses, 7.6% buildings and apartment blocks, 3.4% other types and 3.3% commercial houses. The N4, N23, CR 312, N805 and N848 serve the municipality. From the centre, the A26/E25 towards Liège, Bastogne and Neufchâteau is a 16-minute drive; the A4/E411-E25 towards Brussels, Namur, Arlon and Luxembourg City is 19 minutes away.
TEC buses serve Martelange on 6 lines. Named routes include line 2 between Jambes (Amée) and Saint-Servais (Beau-Vallon), 54/4 between Martelange and Habay, 60 between Saint-Hubert, Neufchâteau and Martelange, 80 between Namur station and Jambes (La Sauge), and E69 between Liège, Bastogne and Arlon. Nearby stations are Habay, Stockem, Viville, Aarlen / Arel / Arlon and Marbehan. There is 1 nursery, La Forêt Des Contes, and 2 nursery schools and 2 primary schools: Ecole Fondamentale Libre De La Haute-Sûre and Ecole Fondamentale Autonome De Martelange. There is no secondary school in the municipality.
The available information names no supermarkets or shops. Martelange has no shared bicycles, shared cars or known charging station. Household car ownership averages 1.1 cars, against a national average of 1.3. Liège Airport is 70 minutes away by car or 207 minutes by public transport. For a buyer comparing house listings, the current market consists of 5 properties, ranging from €125,000 to €685,000, with an average asking price of €388,800.