In het postcodegebied 6004 is het aantal inwoners sinds 1998 als volgt opgebouwd :
| Jaar | Inwoners | Groei |
| 1998 | 9,525 | |
| 1999 | 9,415 | -1.15% |
| 2000 | 9,215 | -2.12% |
| 2001 | 9,065 | -1.63% |
| 2002 | 8,950 | -1.27% |
| 2003 | 8,900 | -0.56% |
| 2004 | 8,835 | -0.73% |
| 2005 | 8,845 | 0.11% |
| 2006 | 8,860 | 0.17% |
| 2007 | 8,875 | 0.17% |
| 2008 | 8,815 | -0.68% |
| 2009 | 8,765 | -0.57% |
| 2010 | 8,850 | 0.97% |
| 2011 | 8,990 | 1.58% |
| .2012 | 9,095 | 1.17% |
| 2013 | 9,200 | 1.15% |
| 2014 | 9,220 | 0.22% |
| 2015 | 9,230 | 0.11% |
| 2016 | 9,285 | 0.60% |
| 2017 | 9,315 | 0.32% |
| 2018 | 9,320 | 0.05% |
| 2019 | 9,315 | -0.05% |
| 2020 | 9,390 | 0.81% |