Flémalle has 26,304 inhabitants across 36.6 km². The average age is close to 41, and 64% of residents own their homes. Average annual net income is €16,106. The population is 92.6% Belgian, 3.5% Italian, 0.7% French, 0.4% Spanish, 0.3% Moroccan, 0.3% Romanian, 0.2% Guinean and 2% other nationalities. Women make up 51.9% of the population. For a house buyer, this is a municipality where owner-occupation is common and the housing stock is predominantly made up of houses.
Houses account for 84.9% of dwellings in Flémalle, while apartment buildings account for 15.1%. Across all dwellings, the average is 5.6 rooms, and buildings were constructed on average in 1937. The building mix includes 34% semi-detached houses, 29.6% terraced houses, 19.2% detached houses, farms and castles, 14.8% apartment buildings and blocks of flats, 1.9% commercial houses and 0.5% other building types. There are currently 57 houses for sale, with an average asking price of €271,052. Listed prices range from €75,000 to €675,000.
Road access includes the A15/E42, which is 6 minutes by car from the centre, and the A602/E25, 10 minutes away. The local road network includes the N617, N639, N644, 644a and N677. TEC bus services include line 3 between Rép. Française, Tilleur, Jemeppe and Flémalle (Trixhes); line 32 between Flémalle (Trixhes), Jemeppe, Seraing, Boncelles and CHU; line 41 from Sart-Tilman via Ougrée, Seraing, Jemeppe and Mons; line 42 between Flémalle, Profondval and Mons; and line 47 between Jemeppe, Ivoz, Flémalle and Stockay. There are 15 bus lines in the municipality. Nearby stations serving the centre include Leman, Flemalle-Haute, Flemalle-Grande, Jemeppe-Sur-Meuse and Seraing.
Families have 20 nurseries, 23 nursery schools and 24 primary schools in the commune, as well as Athenee Provincial De Flemalle Guy Lang, a secondary school. Named examples include Guimauve Et Barbapapa nursery, Ecole Sainte-Thérèse and Ecole Fondamentale Libre Saint-Jean-Baptiste. For groceries, Flémalle has 2 Carrefour stores, 1 SPAR, 1 Aldi and 1 LIDL. There is 1 electric-car charging station; shared bicycles and shared cars are not offered. Liège Airport is 8 minutes away by car or 33 minutes by public transport.