Wijk 42 Ypenburg
26,358 residents (2026); 10,190 households averaging 2.6, 2,540 single-person at 25 percent; 4,620 under fifteen at 18 percent, 4,175 aged fifteen to twenty-five at 16 percent, 5,755 aged twenty-five to forty-five at 22 percent, 8,860 aged forty-five to sixty-five at 34 percent, 2,970 over sixty-five at 11 percent; 505 hectares, 450 land and 54 water; density 5,893; 9,764 dwellings; average value 516,000 euro; 5,565 owner-occupied at 57 percent and 4,199 rented at 43; income 38,600 euro (2024); 8 primary establishments with 2,475 pupils and 4 secondary with 1,431; seven buurten, Tedingerbroek, De Venen, Bosweide, Morgenweide, Singels, Waterbuurt and De Bras.
Wijk 44 Leidschenveen
20,049 residents (2026); 7,560 households averaging 2.7, 1,715 single-person at 23 percent; 3,485 under fifteen at 17 percent, 3,090 aged fifteen to twenty-five at 15 percent, 3,985 aged twenty-five to forty-five at 20 percent, 6,840 aged forty-five to sixty-five at 34 percent, 2,660 over sixty-five at 13 percent; 376 hectares, 348 land and 28 water; density 5,845; 7,457 dwellings; average value 510,000 euro; 4,922 owner-occupied at 66 percent and 2,535 rented at 34; income 39,500 euro (2024); 5 primary establishments with 1,839 pupils and 3 secondary with 1,108; four buurten, De Velden, De Vissen, De Lanen and the Rietbuurt.
Wijk 43 Forepark
155 residents (2026); 70 households averaging 2.1, 25 single-person and 45 multi-person; 35 under fifteen, 10 aged fifteen to twenty-five, 25 aged twenty-five to forty-five, 45 aged forty-five to sixty-five, 40 over sixty-five; 304 hectares, 295 land and 9 water; density 51; 47 dwellings; average value 757,000 euro; 42 owner-occupied at 89 percent and 5 rented at 11; income 53,600 euro for 2023; no primary establishment and no pupils; two buurten, Vlietzoom-Oost and De Rivieren. The encyclopaedia entry describes it as the bedrijventerrein lying along the A4 and A12.
Hoornwijk
1,004 residents (2026); 465 households averaging 2.1, 235 single-person at 51 percent; 230 under fifteen at 23 percent, 140 aged fifteen to twenty-five, 390 aged twenty-five to forty-five at 39 percent, 185 aged forty-five to sixty-five, 80 over sixty-five; 371 hectares, 354 land and 17 water; density 280; 418 dwellings; average value 478,000 euro; 180 owner-occupied at 43 percent and 238 rented at 57; income 31,600 euro for 2023; no primary establishment; three buurten, De Reef, Vlietzoom-West and the Vliegeniersbuurt, the last of those named for the airfield.
How the stadsdeel was assembled
It was created by a municipal reorganisation in 2002. Leidschenveen, including the Forepark business park along the A4 and A12, transferred from Leidschendam; Ypenburg, a former military airfield, came from Leidschendam, Nootdorp and Rijswijk together. Leidschenveen and Ypenburg are two of the seven Vinex wijken in the Haaglanden region. The entry gives the stadsdeel 47,440 residents for 2023, a density of 5,385, 8.81 square kilometres of which 7.98 land and 0.82 water, and 17,188 dwellings; the Hague city page in this series carries 48,273 for 2022.
What is not added up, and what is not estimated
The four wijk land areas total more than the 7.98 square kilometres the encyclopaedia entry gives the stadsdeel, and the four dwelling counts do not match its 17,188 either. Those are different vintages from different publishers and this page quotes them separately rather than reconciling them. Nothing here was calculated. And no figure is offered for how many people are in Forepark or Hoornwijk during a working day, because none was read.
Modern Age Coders has no connection to this stadsdeel, to any of its four wijken, to The Hague or to any school counted above, and nothing here implies one. The four wijk rows come from the statistics office at that office own vintages, which is why two income figures are for 2024 and two for 2023 and are quoted that way rather than aligned. The 2002 reorganisation, the four wijken, the airfield, the Vinex status, the stadsdeel area, dwelling stock and 2023 population come from the encyclopaedia entry.
