Which has higher mean body mass index (bmi) in women, Cook Islands or Tonga?

Tonga, at 33.7 against 33.1 in Cook Islands as of 2016.

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

42 years are reported by both, from 1975 to 2016.

Where does this data come from?

World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data, published as Mean body mass index (BMI) in women. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Cook Islands vs Tonga: Mean body mass index (BMI) in women

Cook Islands

33.1

in 2016

Tonga

33.7

in 2016

Cook Islands rank

4th

Tonga rank

2nd

Mean body mass index (BMI) in women over time

Cook Islands
Tonga

How they compare

Tonga currently reports 33.7 against 33.1 in Cook Islands, a difference of 0.6.

The two have swapped places 1 time across 42 shared years of data; in 1975 it was Cook Islands ahead.

Cook Islands ranks 4th and Tonga ranks 2nd of 190 countries.

Across the 5 decades both report, Cook Islands averaged higher in 1 and Tonga in 4.

Head to head by decade

Decade	Cook Islands	Tonga	Difference	Ahead
1970s	29.14	29.08	0.06	Cook Islands
1980s	30.1	30.36	0.26	Tonga
1990s	31.34	31.83	0.49	Tonga
2000s	32.34	32.87	0.53	Tonga
2010s	32.96	33.51	0.5571	Tonga

Averages of every year both report within each decade.

Frequently asked questions

Which has higher mean body mass index (bmi) in women, Cook Islands or Tonga?: Tonga, at 33.7 against 33.1 in Cook Islands as of 2016.
What is the difference in mean body mass index (bmi) in women between Cook Islands and Tonga?: 0.6, with Tonga ahead.
How many years of comparable data are there for Cook Islands and Tonga?: 42 years are reported by both, from 1975 to 2016.
How do Cook Islands and Tonga rank globally for mean body mass index (bmi) in women?: Cook Islands ranks 4th and Tonga ranks 2nd of 190 countries.
Where does this data come from?: World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data, published as Mean body mass index (BMI) in women. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Cook Islands vs Tonga: Mean body mass index (BMI) in women. Statizoid, drawing on World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data. Retrieved 13 September 2026, from https://gender.statizoid.com/compare/mean-body-mass-index-bmi-in-adult-women/cook-islands/tonga/

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<a href="https://gender.statizoid.com/compare/mean-body-mass-index-bmi-in-adult-women/cook-islands/tonga/">Cook Islands vs Tonga: Mean body mass index (BMI) in women</a> — Statizoid

About this data

Indicator: Mean body mass index (BMI) in women
Source: World Health Organization - Global Health Observatory (2026) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 190 places, 7,980 data points, 1975–2016
Last refreshed: 28 August 2026

Body mass index (BMI) is measured as a person's weight in kilograms (kg) divided by her height (in meters), squared. The WHO define a BMI <=18.5 as 'underweight'; 18.5 to <25 as 'normal/healthy'; 25.0 to <30 as 'overweight'; and >30.0 as 'obese'.