क्षेत्र सूची
- 1901 HC - Castricum, Castricum, Noord-Holland
- 1901 HD - Castricum, Castricum, Noord-Holland
- 1901 HE - Castricum, Castricum, Noord-Holland
- 1901 HG - Castricum, Castricum, Noord-Holland
- 1901 HH - Castricum, Castricum, Noord-Holland
- 1901 HJ - Castricum, Castricum, Noord-Holland
- 1901 HK - Castricum, Castricum, Noord-Holland
- 1901 HL - Castricum, Castricum, Noord-Holland
- 1901 HM - Castricum, Castricum, Noord-Holland
- 1901 HN - Castricum, Castricum, Noord-Holland
- 1901 HP - Castricum, Castricum, Noord-Holland
- 1901 HR - Castricum, Castricum, Noord-Holland
- 1901 HS - Castricum, Castricum, Noord-Holland
- 1901 HT - Castricum, Castricum, Noord-Holland
- 1901 HV - Castricum, Castricum, Noord-Holland
- 1901 HW - Castricum, Castricum, Noord-Holland
- 1901 HX - Castricum, Castricum, Noord-Holland
- 1901 HZ - Castricum, Castricum, Noord-Holland
- 1901 JA - Castricum, Castricum, Noord-Holland
- 1901 JB - Castricum, Castricum, Noord-Holland