| 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total Households (thousands) | 885.8 | 893.0 | 902.7 | 912.4 | 921.2 | 929.0 | 934.4 | 942.8 | 955.2 | 967.3 | 963.3 | 970.1 | 975.1 | 989.2 | 988.0 | 995.0 | 999.0 | 1,007.0 | |
Households by Building Type (thousands) | |||||||||||||||||||
| Single Detached | 627.4 | 632.4 | 639.1 | 645.9 | 652.0 | 657.5 | 661.1 | 666.9 | 675.6 | 684.1 | 681.3 | 686.1 | 689.6 | 699.9 | 698.6 | 703.5 | 706.3 | 712.1 | |
| Single Attached | 58.7 | 59.5 | 60.3 | 61.3 | 62.1 | 62.9 | 63.4 | 64.2 | 65.3 | 66.4 | 66.4 | 67.1 | 67.7 | 68.9 | 69.0 | 69.7 | 70.2 | 71.0 | |
| Apartments | 165.6 | 167.0 | 168.9 | 170.8 | 172.4 | 174.0 | 175.0 | 176.7 | 179.1 | 181.3 | 180.5 | 181.7 | 182.6 | 185.0 | 185.1 | 186.4 | 187.2 | 188.5 | |
| Mobile Homes | 34.0 | 34.1 | 34.3 | 34.5 | 34.6 | 34.7 | 34.8 | 34.9 | 35.2 | 35.5 | 35.0 | 35.1 | 35.1 | 35.4 | 35.2 | 35.3 | 35.3 | 35.4 | |
Shares (%) | |||||||||||||||||||
| Single Detached | 70.8 | 70.8 | 70.8 | 70.8 | 70.8 | 70.8 | 70.8 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | 70.7 | |
| Single Attached | 6.6 | 6.7 | 6.7 | 6.7 | 6.7 | 6.8 | 6.8 | 6.8 | 6.8 | 6.9 | 6.9 | 6.9 | 6.9 | 7.0 | 7.0 | 7.0 | 7.0 | 7.1 | |
| Apartments | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | 18.7 | |
| Mobile Homes | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 | 3.7 | 3.7 | 3.7 | 3.7 | 3.7 | 3.6 | 3.6 | 3.6 | 3.6 | 3.6 | 3.5 | 3.5 | 3.5 | |
Households by Energy Source (thousands) | |||||||||||||||||||
| Electricity | 350.6 | 356.0 | 361.1 | 369.3 | 378.8 | 391.3 | 405.1 | 421.3 | 441.7 | 467.3 | 485.2 | 509.0 | 531.9 | 560.9 | 578.8 | 602.0 | 622.9 | 643.9 | |
| Natural Gas | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.8 | 3.9 | 6.3 | 9.0 | 12.0 | 15.5 | 19.4 | 20.8 | |
| Heating Oil | 385.6 | 388.3 | 392.1 | 391.8 | 390.0 | 385.0 | 377.8 | 370.0 | 361.9 | 350.2 | 332.5 | 317.9 | 302.5 | 288.7 | 272.5 | 257.7 | 242.3 | 229.7 | |
| Other1 | 9.9 | 9.9 | 9.8 | 10.9 | 11.9 | 12.9 | 13.9 | 14.9 | 15.9 | 17.0 | 16.7 | 16.5 | 16.3 | 16.2 | 15.9 | 15.7 | 15.4 | 15.6 | |
| Wood | 139.6 | 138.9 | 139.7 | 140.5 | 140.5 | 139.7 | 137.5 | 136.6 | 135.6 | 132.7 | 127.1 | 122.8 | 118.1 | 114.5 | 108.8 | 104.1 | 99.0 | 97.1 | |
Shares (%) | |||||||||||||||||||
| Electricity | 39.6 | 39.9 | 40.0 | 40.5 | 41.1 | 42.1 | 43.4 | 44.7 | 46.2 | 48.3 | 50.4 | 52.5 | 54.6 | 56.7 | 58.6 | 60.5 | 62.4 | 63.9 | |
| Natural Gas | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.4 | 0.6 | 0.9 | 1.2 | 1.6 | 1.9 | 2.1 | |
| Heating Oil | 43.5 | 43.5 | 43.4 | 42.9 | 42.3 | 41.4 | 40.4 | 39.2 | 37.9 | 36.2 | 34.5 | 32.8 | 31.0 | 29.2 | 27.6 | 25.9 | 24.3 | 22.8 | |
| Other1 | 1.1 | 1.1 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 | 1.8 | 1.7 | 1.7 | 1.7 | 1.6 | 1.6 | 1.6 | 1.5 | 1.6 | |
| Wood | 15.8 | 15.5 | 15.5 | 15.4 | 15.2 | 15.0 | 14.7 | 14.5 | 14.2 | 13.7 | 13.2 | 12.7 | 12.1 | 11.6 | 11.0 | 10.5 | 9.9 | 9.6 | |