Population figures
Position as at 31.12.2007, source LDS NRW| Municipality | Population |
| Erkelenz | 44,759 |
| Gangelt | 11,719 |
| Geilenkirchen | 28,265 |
| Heinsberg | 41,335 |
| Hückelhoven | 39,666 |
| Selfkant | 10,273 |
| Übach-Palenberg | 25,088 |
| Waldfeucht | 9,343 |
| Wassenberg | 16,961 |
| Wegberg | 29,419 |
| County of Heinsberg | 256,850 |
Population density
Position as at 30.06.2007, source LDS NRW| Region | Population / skm |
| HS | 409 |
| NRW | 528 |
| Bund | 230 |
Population forecast for 2020
Position as at 30.06.2004, source LDS NRW, BBR Bonn| Region | 2004 | 2020 | Change |
| HS | 256,873 |
276,771 |
+ 7.2 % |
| NRW | 18,079,686 | 17,950,268 | - 0.7 % |
| Germany | 82,536,700 | 81,541,000 | - 1.2 % |
