What is the difference in the global population hockey stick between Congo, Democratic Republic of the and Iran, Islamic Republic of?

15.18 million people, with Congo, Democratic Republic of the ahead.

How many years of comparable data are there for Congo, Democratic Republic of the and Iran, Islamic Republic of?

241 years are reported by both, from 1000 to 2023.

Where does this data come from?

HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data, published as The global population hockey stick. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Congo, Democratic Republic of the vs Iran, Islamic Republic of: The global population hockey stick

Congo, Democratic Republic of the

105.79 million people

in 2023

Iran, Islamic Republic of

90.61 million people

in 2023

Congo, Democratic Republic of the rank

16th

Iran, Islamic Republic of rank

18th

The global population hockey stick over time

Congo, Democratic Republic of the
Iran, Islamic Republic of

How they compare

Congo, Democratic Republic of the currently reports 105.79 million people against 90.61 million people in Iran, Islamic Republic of, a difference of 15.18 million people.

That makes Congo, Democratic Republic of the's figure about 1.2 times Iran, Islamic Republic of's.

The two have swapped places 5 times across 241 shared years of data; in 1000 it was Iran, Islamic Republic of ahead.

Congo, Democratic Republic of the ranks 16th and Iran, Islamic Republic of ranks 18th of 239 countries.

Across the 40 decades both report, Congo, Democratic Republic of the averaged higher in 21 and Iran, Islamic Republic of in 19.

Head to head by decade

Decade	Congo, Democratic Republic of the	Iran, Islamic Republic of	Difference	Ahead
1000s	2.94 million people	4.50 million people	1.56 million people	Iran, Islamic Republic of
1100s	3.43 million people	4.75 million people	1.32 million people	Iran, Islamic Republic of
1200s	3.93 million people	5.00 million people	1.07 million people	Iran, Islamic Republic of
1300s	4.42 million people	3.50 million people	916,000 people	Congo, Democratic Republic of the
1400s	5.15 million people	3.75 million people	1.40 million people	Congo, Democratic Republic of the
1500s	5.89 million people	4.00 million people	1.89 million people	Congo, Democratic Republic of the
1600s	6.26 million people	5.00 million people	1.26 million people	Congo, Democratic Republic of the
1700s	6.62 million people	5.00 million people	1.62 million people	Congo, Democratic Republic of the
1710s	6.68 million people	5.21 million people	1.46 million people	Congo, Democratic Republic of the
1720s	6.72 million people	5.32 million people	1.40 million people	Congo, Democratic Republic of the
1730s	6.76 million people	5.43 million people	1.33 million people	Congo, Democratic Republic of the
1740s	6.81 million people	5.55 million people	1.26 million people	Congo, Democratic Republic of the
1750s	6.86 million people	5.67 million people	1.20 million people	Congo, Democratic Republic of the
1760s	6.92 million people	5.79 million people	1.13 million people	Congo, Democratic Republic of the
1770s	6.97 million people	5.91 million people	1.06 million people	Congo, Democratic Republic of the
1780s	7.03 million people	6.03 million people	998,930 people	Congo, Democratic Republic of the
1790s	7.10 million people	6.16 million people	935,600 people	Congo, Democratic Republic of the
1800s	5.16 million people	6.12 million people	958,362 people	Iran, Islamic Republic of
1810s	5.17 million people	6.40 million people	1.24 million people	Iran, Islamic Republic of
1820s	5.55 million people	6.69 million people	1.14 million people	Iran, Islamic Republic of
1830s	6.47 million people	7.00 million people	525,583 people	Iran, Islamic Republic of
1840s	7.56 million people	7.32 million people	238,131 people	Congo, Democratic Republic of the
1850s	8.24 million people	7.71 million people	529,444 people	Congo, Democratic Republic of the
1860s	8.52 million people	8.18 million people	338,262 people	Congo, Democratic Republic of the
1870s	9.13 million people	8.60 million people	539,139 people	Congo, Democratic Republic of the
1880s	9.72 million people	8.91 million people	806,842 people	Congo, Democratic Republic of the
1890s	9.74 million people	9.55 million people	186,066 people	Congo, Democratic Republic of the
1900s	9.06 million people	10.58 million people	1.51 million people	Iran, Islamic Republic of
1910s	8.36 million people	10.22 million people	1.85 million people	Iran, Islamic Republic of
1920s	8.60 million people	10.74 million people	2.14 million people	Iran, Islamic Republic of
1930s	9.75 million people	13.86 million people	4.11 million people	Iran, Islamic Republic of
1940s	11.22 million people	15.87 million people	4.65 million people	Iran, Islamic Republic of
1950s	13.53 million people	18.55 million people	5.02 million people	Iran, Islamic Republic of
1960s	17.29 million people	24.74 million people	7.45 million people	Iran, Islamic Republic of
1970s	22.81 million people	33.49 million people	10.68 million people	Iran, Islamic Republic of
1980s	30.87 million people	48.61 million people	17.73 million people	Iran, Islamic Republic of
1990s	42.91 million people	62.12 million people	19.21 million people	Iran, Islamic Republic of
2000s	58.14 million people	71.27 million people	13.13 million people	Iran, Islamic Republic of
2010s	80.19 million people	82.17 million people	1.98 million people	Iran, Islamic Republic of
2020s	100.83 million people	89.08 million people	11.75 million people	Congo, Democratic Republic of the

Averages of every year both report within each decade.

Frequently asked questions

Which has higher the global population hockey stick, Congo, Democratic Republic of the or Iran, Islamic Republic of?: Congo, Democratic Republic of the, at 105.79 million people against 90.61 million people in Iran, Islamic Republic of as of 2023.
What is the difference in the global population hockey stick between Congo, Democratic Republic of the and Iran, Islamic Republic of?: 15.18 million people, with Congo, Democratic Republic of the ahead.
How many years of comparable data are there for Congo, Democratic Republic of the and Iran, Islamic Republic of?: 241 years are reported by both, from 1000 to 2023.
How do Congo, Democratic Republic of the and Iran, Islamic Republic of rank globally for the global population hockey stick?: Congo, Democratic Republic of the ranks 16th and Iran, Islamic Republic of ranks 18th of 239 countries.
Where does this data come from?: HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data, published as The global population hockey stick. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Congo, Democratic Republic of the vs Iran, Islamic Republic of: The global population hockey stick. Statizoid, drawing on HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data. Retrieved 05 September 2026, from https://population.statizoid.com/compare/world-population-over-the-last-12000-years-and-un-projection-until-2100/congo-dem-rep/iran-islamic-rep/

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<a href="https://population.statizoid.com/compare/world-population-over-the-last-12000-years-and-un-projection-until-2100/congo-dem-rep/iran-islamic-rep/">Congo, Democratic Republic of the vs Iran, Islamic Republic of: The global population hockey stick</a> — Statizoid

About this data

Indicator: The global population hockey stick
Unit: people
Source: HYDE (2023); Gapminder (2022); UN WPP (2024) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 239 places, 51,002 data points, 1000–2023
Last refreshed: 28 August 2026

Population by country, available from 10,000 BCE to 2023, based on data and estimates from different sources.