Doische currently has 0 flats for rent; the stated monthly rental figure for flats is €0. The municipality has 2,997 inhabitants across 84.1 km², and the average age is close to 42. Women make up 51.1% of residents. Home ownership is 77%, average net income is €15,619 per year, and households have an average of 1.2 cars. The population comprises 97.4% Belgian, 1.5% French, 0.4% Italian, 0.1% Dutch, 0.1% Cameroonian, 0.1% Polish, 0.1% American and 0.3% other nationalities.
Apartment buildings represent 2.3% of dwellings in Doische, while houses account for 97.7%. The average home has 6.2 rooms, and the buildings date from around 1910 on average. The local building mix includes 38.8% open-type houses, farms and castles, 29.1% semi-closed houses, 24.9% closed houses, 3.9% other building types, 2.2% buildings and apartment blocks, and 1.1% commercial houses. For purchase, 1 flat is listed at €255,000; the stated lowest and highest flat-sale prices are both €255,000.
Doische is served by the N40, N99 and N977. The A4/E411–E25 access, on the route towards Brussels, Namur, Arlon and Luxembourg City, is 29 minutes from the centre by car. Reaching the A54/E420 towards Nivelles and Charleroi takes 39 minutes. There are 7 bus lines, including TEC 138a between Florennes and Doische, 156d between Mariembourg and Doische, 422 between Beauraing, Givet and Doische, 453 between Philippeville and Heer-Agimont, and 60/3 between Pesche, Couvin, Mazée and Heer. Stations listed for the area are Beauraing, Anseremme, Philippeville, Mariembourg and Gendron-Celles.
Childcare and education include 1 nursery, 4 nursery schools and 4 primary schools. Ecole Fondamentale Communale is among the named schools, and Athenee Royal Florennes is the listed secondary school. There is 1 Delhaize for daily shopping. Doische has no shared bicycles or shared cars, and no EV charging station is known in the municipality. Brussels South Charleroi Airport is 43 minutes away by car, or 168 minutes by public transport.