In het postcodegebied 6221 is het aantal inwoners sinds 1998 als volgt opgebouwd :
| Jaar | Inwoners | Groei |
| 1998 | 7,705 | |
| 1999 | 8,000 | 3.83% |
| 2000 | 8,095 | 1.19% |
| 2001 | 8,280 | 2.29% |
| 2002 | 8,525 | 2.96% |
| 2003 | 9,035 | 5.98% |
| 2004 | 9,215 | 1.99% |
| 2005 | 9,110 | -1.14% |
| 2006 | 8,795 | -3.46% |
| 2007 | 8,720 | -0.85% |
| 2008 | 8,800 | 0.92% |
| 2009 | 8,920 | 1.36% |
| 2010 | 9,010 | 1.01% |
| 2011 | 9,315 | 3.39% |
| .2012 | 9,610 | 3.17% |
| 2013 | 9,750 | 1.46% |
| 2014 | 9,925 | 1.79% |
| 2015 | 9,835 | -0.91% |
| 2016 | 9,930 | 0.97% |
| 2017 | 9,935 | 0.05% |
| 2018 | 9,925 | -0.10% |
| 2019 | 9,720 | -2.07% |
| 2020 | 9,780 | 0.62% |