Data Sources

A description of the empirical data used and the methods applied in revising past estimates of population and components of demographic change (fertility, child, adult and overall mortality, international migration) is available here for each country or area for the period 1950-2020. For the countries with less than 90,000 inhabitants in 2019, only the data sources for total population are made available.

Select below a country or area to see the respective information, or download the whole set of metadata in PDF format for all countries or areas or a tabular version for each demographic component under Data download: Metadata.

Kenya
Population: Total population and distribution by age and sex estimated to be consistent with the population by age and sex of the (a) 1962, 1969, 1979, 1989, 1999, 2009 censuses; (b) adjusted censuses for underenumeration; (c) official estimates through 2018; (d) only total population for 1948 Census; and with estimates of the subsequent trends in fertility, mortality and international migration.

Fertility: Total fertility rate and age pattern of fertility based on: (a) birth-histories data from the 1977-1978 WFS and 1989, 1993, 1998, 2003, 2008-2009, 2014 DHS and 2009 MHS and 2010, 2015 MIS; (b) births in the household in the preceding 12 (or 24) months classified by age of mother from the 1962, 1969, 1979, 1989, 1999, 2009 censuses and 2014 PMA-R1 and 2014 PMA-R2 and 2015 PMA-R3 and 2015 PMA-R4 and 2016 PMA-R5 and 2017 PMA-R6.  In addition, the (a) births in the household in the preceding 12 (or 24) months classified by age of mother from the 1984 CPS; (b) adjusted fertility using synthetic relational Gompertz model with data on children ever born and births in the preceding 12 (or 24/36) months, both classified by age of mother, from the 1989, 1999 censuses; (c) indirect estimates obtained using Mortara's method with data on children ever born by age of mother from the 1983 NDS and 1994 WMS and 2000 MICS and 2012-2013 AIS have been considered.

Child Mortality: Under-five mortality based on: (a) direct estimates from births and deaths under-five calculated from full birth histories data from the 1977-1978 WFS and 1989, 1993, 1998, 2003, 2008-2009, 2014 DHS and 2010, 2015 MIS; (b) indirect estimates from data on children ever born and surviving from the 1962, 1969, 1979, 1989, 1999, 2009 censuses and 1977, 1983 NDS and 1994 WMS and 2000 MICS and 2012-2013 AIS; (c) recent household deaths from the 2007 AIS; (d) International estimates used up to 2017.  In addition, the (a) registered infant and child deaths through 2009; (b) recent household deaths from the 2009 Census have been considered.

Overall Mortality: Life expectancy at birth and age pattern of mortality based on: (a) official estimates through 2007; (b) International estimates used up to 2017; (c) The demographic impact of AIDS has been factored into the mortality estimates; (d) estimates using HIV/AIDS model life tables and estimates of under-five mortality (5q0) and adult mortality (45q15) with UNAIDS estimates of adult HIV prevalence, and ART coverage for children and adults.

Adult and Old Age Mortality: Estimates derived from: (a) recent household deaths data by age and sex from the 2009 Census; (b) recent household deaths adjusted at adult ages for underregistration using the growth balance method; (c) siblings deaths from the 1989, 1998, 2003, 2008-2009, 2014 DHS; (d) maternal orphanhood from the 1969, 1989, 1999, 2009 censuses and 1977-1978 WFS and 1989, 1993, 1998, 2003, 2014 DHS and 2000 MICS; (e) paternal orphanhood from the 1969, 1989, 1999, 2009 censuses and 1977-1978 WFS and 1989, 1998, 2003 DHS; (f) intercensal survivorship from successive census age distributions; (g) International estimates used up to 2017.

Migration: International migration based on: (a) information on foreign-born populations from censuses and registers from major countries of destination; (b) estimates derived as the differences between overall population growth and natural increase; (c) UNHCR statistics on the number of refugees in the main countries of asylum.

Disclaimer: This web site contains data tables, figures, maps, analyses and technical notes from the current revision of the World Population Prospects. These documents do not imply the expression of any opinion whatsoever on the part of the Secretariat of the United Nations concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.