Household size - Refers to the number of persons in a private household.

Private household - Refers to a person or a group of persons (other than foreign residents) who occupy a private dwelling and do not have a usual place of residence elsewhere in Canada.

Refers to households that consist solely of one census family without additional persons. In 2001, this category was called 'One-family households' and also included census families with additional persons.

Private household - Refers to a person or a group of persons (other than foreign residents) who occupy a private dwelling and do not have a usual place of residence elsewhere in Canada.

Household total income - The total income of a household is the sum of the total incomes of all members of that household.

'Total income' refers to the total money income received from the following sources during calendar year 2005 by persons 15 years of age and over:

- wages and salaries (total)
- net farm income
- net non-farm income from unincorporated business and/or professional practice
- child benefits
- Old Age Security pension and Guaranteed Income Supplement
- benefits from Canada or Quebec Pension Plan
- benefits from Employment Insurance
- other income from government sources
- dividends, interest on bonds, deposits and savings certificates, and other investment income
- retirement pensions, superannuation and annuities, including those from RRSPs and RRIFs
- other money income.

After-tax income of households - The after-tax income of a household is the sum of the after-tax incomes of all members of that household. After-tax income of household members refers to total income from all sources minus federal, provincial and territorial taxes paid for 2005.

Receipts not counted as income - The income concept excludes gambling gains and losses, lottery prizes, money inherited during the year in a lump sum, capital gains or losses, receipts from the sale of property, income tax refunds, loan payments received, lump sum settlements of insurance policies, rebates received on property taxes, refunds of pension contributions as well as all income 'in kind,' such as free meals and living accommodations, or agricultural products produced and consumed on the farm.

Average income of families (census/economic), persons 15 years of age and over not in families, and households - Average income of families (census/economic) or persons 15 years of age and over not in families or households refers to the weighted mean total income of families (census/economic), persons 15 years of age and over not in families, or households in 2005. Average income is calculated from unrounded data by dividing the aggregate income of a specified group of families (for example, husband-wife families with working wives) or persons not in families or households (for example, two person households) by the number of families, persons not in families, or households in that respective group, whether or not they reported income.

Median income of families (census/economic), persons 15 years of age and over not in families, and households - The median income of a specified group of families (census/economic), persons 15 years of age and over not in families, or households is that amount which divides their income size distribution, ranked by size of income, into two halves. That is, the incomes of the first half of the families, persons 15 years of age and over not in families, or households are below the median, while those of the second half are above the median. Median incomes of families (census/economic), persons 15 years of age and over not in families, or households are normally calculated for all units in the specified group, whether or not they reported income.

Standard error of average income - Refers to the estimated standard error of average income for an income size distribution. If interpreted as shown below, it serves as a rough indicator of the precision of the corresponding estimate of average income. For about 68% of the samples which could be selected from the sample frame, the difference between the sample estimate of average income and the corresponding figure based on complete enumeration would be less than one standard error. For about 95% of the possible samples, the difference would be less than two standard errors and, in about 99% of the samples, the difference would be less than approximately two and a half standard errors.

The above concept and procedures also apply in the calculation of these statistics on the after-tax income of families (census/economic), persons 15 years of age and over not in families and households.