A. Locality (paras. 2.49.- 2.51.)

For census purposes, a locality should be defined as a distinct population cluster (also designated as inhabited place, populated centre, settlement and so forth) in which the inhabit-
ants live in neighbouring sets of living quarters and that has a name or a locally recognized status. It thus includes fishing hamlets, mining camps, ranches, farms, market towns, villages, towns, cities and many other population clusters that meet the criteria specified above. Any departure from this definition should be explained in the census report as an aid to the interpretation of the data.

Localities as defined above should not be confused with the smallest civil divisions of a country. In some cases, the two may coincide. In others, however, even the smallest civil division may contain two or more localities. On the other hand, some large cities or towns may contain two or more civil divisions, which should be considered as segments of a single locality rather than separate localities.

A large locality of a country (that is to say, a city or a town) is often part of an urban agglomeration, which comprises the city or town proper and also the suburban fringe or thickly settled territory lying outside, but adjacent to, its boundaries. The urban agglomeration is therefore not identical with the locality but is an additional geographical unit, which may include more than one locality. In some cases, a single large urban agglomeration may comprise several cities or towns and their suburban fringes. The components of such large agglomerations should be specified in the census results.

B. Urban and rural (paras. 2.52.- 2.59.)

Because of national differences in the characteristics that distinguish urban from rural areas, the distinction between the urban and the rural population is not yet amenable to a single definition that would be applicable to all countries or, for the most part, even to the countries within a region.

The traditional distinction between urban and rural areas within a country has been based on the assumption that urban areas, no matter how they are defined, provide a different way of life and usually a higher level of living than are found in rural areas. In many industrialized countries, this distinction has become blurred and the principal difference between urban and
rural areas in terms of the circumstances of living tends to be a matter of the degree of concentration of population. Although the differences between urban and rural ways of life and levels of living remain significant in developing countries, rapid urbanization in these countries has created a great need for information related to different sizes of urban areas.

Density of settlement may not, however, be a sufficient criterion in many countries, particularly where there are large localities that are still characterized by a truly rural way of life. Even in the industrialized countries, it may be considered appropriate to distinguish between agricultural localities, market towns, industrial centres, service centres and so forth, within size-categories of localities. Even where size is not used as a criterion, the locality is the most appropriate unit or classification for national purposes as well as for international comparability. If it is not possible to use the locality, the smallest administrative unit of the country should be used.

C. Locality (paras. 96.- 99.)

Locality is defined as a distinct population cluster (also designated as inhabited place, population centre, settlement etc.), in which the inhabitants live in neighbouring sets of living
quarters and which has a name or a locally recognized status. Localities should not be confused with the smallest civil divisions of a country. In some cases, the two may coincide. In others, however, even the smallest civil division may contain two or more localities.

In compiling vital statistics, the basis for geographic tabulation may be either place of occurrence, i.e., the locality, major civil division or other geographic place where the event occurred, or place of usual residence, i.e., the locality where the person in question (parent, decedent, marriage partner, etc.) usually resides.

The recommended classification of localities by size class is as follows:

This comprehensive classification would usually be too detailed for the tabulation of survey results. Only when surveys are based on very large sample sizes would they have sufficient numbers to permit such detailed classification. For survey results, therefore, consideration may be given to a much more condensed classification.

D. Urban and rural (paras. 100.- 103.)

Urban/rural is a derived topic of high priority in a vital statistics system which is based on geographic information obtained from place of occurrence and place of usual residence. Because of national differences in the characteristics which distinguish urban from rural areas, the distinction between urban and rural population is not amenable to a single definition applicable to all countries. For this reason, each country should decide which areas are to be classified as urban and which as rural, in accordance with their own circumstances.

For national purposes as well as for international comparability, the most appropriate unit of classification is the size of locality or, if this is not possible, the smallest administrative division of the country. It must be recognized, however, that a distinction by urban and rural based solely on the size of the population of localities does not always offer a satisfactory basis for classification, especially in highly industrialized countries. Some countries have developed a classification of localities based not on population size alone but on “socioeconomic structure of the population”, in the localities.41 Others have tried to express degrees of urbanization by use of indices of population density etc. 103. The difficulty of applying these criteria to vital statistics lies in the fact that data on the relevant variables are seldom available.