Motivation: Our national source, Statistics Korea, reports population under three programs with different combinations of properties:

• Annual, estimate, by total population, all persons reside in Korea.
• Annual, projection, by broad age bracket (0 to 14, 15 to 64 and 65 and older), all persons resident in Korea.
• Five-year, census, by four-year age bracket, Korean nationals resident in Korea.

Response: For international consistency, Moody's Analytics estimates quarterly population by broad age brackets (total, ages 0 to 14, 15 to 64,  65 and older), for Korean residents of any nationality.

Properties

• Measurement: Thousands of individuals (Ths. #), seasonally adjusted (SA)
• Frequency: Quarterly
• Start date: 
• National total: 1970Q1
• Subnational total and age cohorts: 1970Q3
• Geo coverage: Country and Seoul City 

The series reside in the historical catalog (South Korea » Demographics » Population » Moody's Analytics Estimated) and include, for example:

• RPOPQ.IKOR_SE     = Population - Total, (Ths. #, SA) - for Seoul city
• RPOP0014Q.IKOR    = Ages 0-14
• RPOP1564Q.IKOR_SE = Ages 15-64 - for Seoul city
• RPOP65GQ.IKOR     = Ages 65 and older

Because catalog locations are subject to change, the upper-right search box on DataBuffet.com provides a "find in catalog" mode that accepts a mnemonic.

Method: Please see the background documentation in Mnemonic 411.

See also

• New Data: South Korea subnational - Population by sex and age (Jan 2019)
• New Data: South Korea subnational - Population projection by age (Jan 2019)
• New Geos: South Korea - Official geographic structure and list (Oct 2011)