Income and Earnings Highlight Tables, 2006 Census

Random rounding and percentage distributions

To ensure the confidentiality of responses collected for the 2006 Census, a random rounding process is used to alter the values reported in individual cells. As a result, when these data are summed or grouped, the total value may not match the sum of the individual values, since the total and subtotals are independently rounded. Similarly, percentage distributions, which are calculated on rounded data, may not necessarily add up to 100%.

Non-permanent residents and the census universe

In the 2006 Census, non-permanent residents are defined as people from another country who, at the time of the census, held a Work or Study Permit, or who were refugee claimants, as well as family members living in Canada with them. In the 1991, 1996 and 2001 censuses, non-permanent residents also included persons who held a Minister's permit; this was discontinued by Citizenship and Immigration Canada prior to the 2006 Census.

From 1991 on, the Census of Population has enumerated both permanent and non-permanent residents of Canada. Prior to 1991, only permanent residents of Canada were included in the census. (The only exception to this occurred in 1941.) Non-permanent residents were considered foreign residents and were not enumerated.

Total population counts, as well as counts for all variables, are affected by this change in the census universe. Users should be especially careful when comparing data from 1991, 1996, 2001 or 2006 with data from previous censuses in geographic areas where there is a concentration of non-permanent residents.

Today in Canada, non-permanent residents make up a significant segment of the population, especially in several census metropolitan areas. Their presence can affect the demand for such government services as health care, schooling, employment programs and language training. The inclusion of non-permanent residents in the census facilitates comparisons with provincial and territorial statistics (marriages, divorces, births and deaths) which include this population. In addition, this inclusion of non-permanent residents brings Canadian practice closer to the United Nations (UN) recommendation that long-term residents (persons living in a country for one year or longer) be enumerated in the census.

Although every attempt has been made to enumerate non-permanent residents, factors such as language difficulties, the reluctance to complete a government form or to understand the need to participate may have affected the enumeration of this population.

For additional information, please refer to the 2006 Census Dictionary, catalogue number 92-566-XWE or 92-566-XPE.

For counts of the non-permanent resident population in 1991, 2001 and 2006, please refer to the 2006 Census table 97-557-XCB2006006.

Data Quality - Relationship of Census Income Estimates to the National Accounts and Survey of Labour and Income Dynamics

Census income estimates of aggregate income in 2005 were compared to similar personal income estimates from the national accounts. After adjustments to the personal income estimates for differences in concepts and coverage, the census estimate of aggregate income in 2005 from comparable sources was 1.2% lower than the national accounts estimate. As in the past, census estimates for some income components and for some provinces compared more favourably than for others.

Census estimates of aggregate wages and salaries, the largest component of income, were slightly higher (1.0%) than the national accounts estimates. This was partially offset by the difference (-7.8%) between the census estimates of aggregate self-employment income from both farm and non-farm self-employment and the adjusted national accounts figures. Overall, estimates of aggregate employment income or earnings were nearly identical (0.3% difference).

Census estimates of Old Age Security pensions and the Guaranteed Income Supplement were slightly lower (-1.4%), as they were for Canada/Quebec Pension Plan benefits (-0.9%), than adjusted national accounts estimates. Employment Insurance benefits reported in the census were smaller by 6.1%. Census estimates of aggregate child benefits were 2.0% higher than the adjusted national accounts estimates. Census estimates of other government transfer payments, which include such items as social welfare benefits, provincial income supplements to seniors, veterans' pensions and GST/HST/QST refunds, were significantly below (-39.2%) the estimates from the national accounts. Overall, census estimates of aggregate income from all government transfer payments were lower by 12.0%. The census estimate of aggregate investment income in 2005 was slightly lower (-2.7%) than the comparable national accounts estimate. This is a significant improvement when compared to previous census comparisons.

Census income statistics were also compared with similar statistics from the annual Survey of Labour and Income Dynamics (SLID). SLID estimates reflect adjustments made for population undercoverage, while census estimates do not include such an adjustment. This adjustment contributes to census estimates showing fewer income recipients (-2.1%) and earners (-1.4%) than SLID estimates. However, due to higher average amounts, census estimates of aggregate earnings are 2.8% higher than the SLID estimate, while the census estimate of aggregate total income of individuals is 2.3% higher. Most of the observed provincial differences were considered acceptable in the light of sampling errors in the Survey. The all-person low income prevalence rates for Canada (excluding the Territories) were almost identical in both sources for the before-tax measure at 15.3% and only slightly higher (0.6 percentage points) in census than SLID for the after-tax rate.