Which has higher population by age group, Cook Islands or Marshall Islands?

Cook Islands, at 1,836 people against 1,709 people in Marshall Islands as of 2023.

What is the difference in population by age group between Cook Islands and Marshall Islands?

127 people, with Cook Islands ahead.

How many years of comparable data are there for Cook Islands and Marshall Islands?

74 years are reported by both, from 1950 to 2023.

Where does this data come from?

UN, World Population Prospects (2024) – processed by Our World in Data, published as Population by age group. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Cook Islands vs Marshall Islands: Population by age group

Cook Islands

1,836 people

in 2023

Marshall Islands

1,709 people

in 2023

Cook Islands rank

224th

Marshall Islands rank

226th

Population by age group over time

Cook Islands
Marshall Islands

How they compare

Cook Islands currently reports 1,836 people against 1,709 people in Marshall Islands, a difference of 127 people.

That makes Cook Islands's figure about 1.1 times Marshall Islands's.

The two have swapped places 1 time across 74 shared years of data; in 1950 it was Marshall Islands ahead.

Cook Islands ranks 224th and Marshall Islands ranks 226th of 236 countries.

Across the 8 decades both report, Cook Islands averaged higher in 2 and Marshall Islands in 6.

Head to head by decade

Decade	Cook Islands	Marshall Islands	Difference	Ahead
1950s	475.4 people	802.7 people	327.3 people	Marshall Islands
1960s	580.2 people	948 people	367.8 people	Marshall Islands
1970s	683.2 people	935.1 people	251.9 people	Marshall Islands
1980s	761.2 people	1,135 people	373.4 people	Marshall Islands
1990s	874.1 people	1,218 people	344.2 people	Marshall Islands
2000s	1,072 people	1,136 people	63.5 people	Marshall Islands
2010s	1,659 people	1,324 people	334.9 people	Cook Islands
2020s	1,767 people	1,639 people	128 people	Cook Islands

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population by age group, Cook Islands or Marshall Islands?: Cook Islands, at 1,836 people against 1,709 people in Marshall Islands as of 2023.
What is the difference in population by age group between Cook Islands and Marshall Islands?: 127 people, with Cook Islands ahead.
How many years of comparable data are there for Cook Islands and Marshall Islands?: 74 years are reported by both, from 1950 to 2023.
How do Cook Islands and Marshall Islands rank globally for population by age group?: Cook Islands ranks 224th and Marshall Islands ranks 226th of 236 countries.
Where does this data come from?: UN, World Population Prospects (2024) – processed by Our World in Data, published as Population by age group. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Cook Islands vs Marshall Islands: Population by age group. Statizoid, drawing on UN, World Population Prospects (2024) – processed by Our World in Data. Retrieved 25 September 2026, from https://population.statizoid.com/compare/population-by-age-group/cook-islands/marshall-islands/

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<a href="https://population.statizoid.com/compare/population-by-age-group/cook-islands/marshall-islands/">Cook Islands vs Marshall Islands: Population by age group</a> — Statizoid

About this data

Indicator: Population by age group
Unit: people
Source: UN, World Population Prospects (2024) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 236 places, 17,464 data points, 1950–2023
Last refreshed: 18 September 2026

Total population, measured on 1 July of the year shown. This only includes people aged 65+.