Population Table 1 presents a summary of population change in the Northern Midlands over the past 20 years. It can be seen that the population continues to grow but at a slower rate than in previous years. The Northern Midlands population increased 9.6% increase between 1981-1991, compared with 6.3% between 1996-2006.
Table 1: Population by census years in towns and localities
| Area | 1981 | 1986 | 1991 | 1996 | 2001 | 2006 | | Longford | 2,027 | 2,437 | 2,601 | 2,829 | 2,827 | 4,226* | | Perth | 1,229 | 1,352 | 1,573 | 1,863 | 1,984 | 2,239 | | Evandale | 614 | 723 | 772 | 1,033 | 1,057 | 1,289* | | Campbell Town | 879 | 867 | 820 | 816 | 755 | 927* | | Cressy | 640 | 630 | 616 | 637 | 648 | 943* | | Ross | 289 | 283 | 282 | 275 | 266 | 272 | | Other | 4,582 | 4,572 | 4,580 | 3,918 | 3,890 | 2,195* | | |
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| | Totals | 10,260 | 10,864 | 11,244 | 11,371 | 11,427 | 12,091 |
* The data available to date from the 2006 ABS census on these towns utilises different boundaries to those of previous censuses. Rather than just reporting data relevant to people within the towns' boundaries, the 2006 data is for the towns plus significant sections of the surrounding rural areas. Thus these towns appear to have significantly increased in size, whilst the number of people in the 'other' category has dramatically decreased.
Age
Table 2: Age Structure, 2006 | Town | %aged 0-4yrs | % aged 5-14yrs | % aged 15-24yrs | % aged 25-54yrs
| % aged 55-64yrs
| %aged 65yrs & over | Median age
| | Longford | 5.9 | 15.4 | 10.9 | 38.5 | 12.5 | 16.8 | 40 | | Perth | 8.4 | 14.5 | 9.3 | 42.7 | 10.5 | 14.7 | 37 | | Evandale | 7.4 | 16.8 | 9.3 | 41.3 | 12.9 | 12.4 | 39 | | Campbell Town | 5.6 | 10.9 | 9.3 | 34.5 | 16.5 | 23.1 | 46 | | Cressy | 4.8 | 15.1 | 11.5 | 42.6 | 13.7 | 12.3 | 39 | | Ross | 1.5 | 12.9 | 5.1 | 29.4 | 21.7 | 29 | 55 | | Municipal Av. | 6.3 | 15.1 | 15.1 | 40 | 13.2 | 15.1 | 40 | | Australia Av. | 6.3 | 13.5 | 13.5 | 42.2 | 11 | 13.3 | 37 |
Indigenous Status At the 2006 census, 2.3% of the Northern Midlands population reported being of indigenous origin which equates to the national average.
Birthplace and Language
The percentage of Northern Midlands residents stating they were Australian born has dropped: falling from 91.6% in 1991, to 88.2% in 2001 and 86.3% in 2006.
92.2% of Northern Midlands residents are Australian citizens, compared to a national average of 78%. 7.6% were born overseas, compared to the national average of 20%. 4.3% of residents were born in England, 2% in New Zealand, 0.7% in Scotland, 0.5% in Germany and 0.4% in the Netherlands
English is the only language spoken at home in 94.7% of Northern Midlands households, compared to 78.5% Australia wide.
Marital status for population aged over 15 years, 2006 Table 3: Marital Status 2006
| Marital status | Northern Midlands | Australian averages | | Married | 56.5% | 49.6% | | Never married | 25.8% | 33.2% | | Separated or divorced | 11.3% | 11.3% | | Widowed | 6.4% | 5.9% |
Family characteristics, 2006
Table 4: Families 2006
| Location | Number of Families
| % couples with children. | % couples without children. | 1 parent families | Others | | Longford | 1,141 | 43.5 | 42.3 | 13.1 | 1.1 | | Perth | 637 | 44.9 | 41.8 | 12.9 | 0.5 | | Evandale | 374 | 44.7 | 38.8 | 16.6 | 0 | | Campbell Town | 255 | 38 | 48.2 | 12.5 | 1.2 | | Cressy | 264 | 41.3 | 45.1 | 12.1 | 1.5 | | Ross | 93 | 25.8 | 63.4 | 6.5 | 4.3 | | Municipal Av. |
| 44.2 | 42.9 | 12.2 | 0.7 | | Australian Av. |
| 45.3 | 37.2 | 15.8 | 1.7 |
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