Puerto Rico Population by Year (1765–2020)

Puerto Rico's population has changed dramatically over the past 250 years. From fewer than 45,000 residents in 1765 to a peak of 3.8 million people in 2000, the island experienced centuries of growth before recent population declines driven by migration, economic challenges, and natural disasters.

This historical table shows Puerto Rico's population by census year from 1765 through 2020.

Puerto Rico Population at a Glance

Statistic	Value
First census year	1765
Population in 1765	44,883
Highest recorded population	3,808,610 in 2000
Population in 2020	3,285,874
Total growth from 1765 to 2020	Approximately 7,220%
Years covered	255 years

Historical Highlights

Before the Spanish Colonization (Pre-1493)

Long before the arrival of Christopher Columbus in 1493, Puerto Rico was home to thriving Indigenous communities that had inhabited the island for thousands of years. Archaeological evidence shows that the first settlers arrived around 2000–3000 BCE, followed over time by the Igneri and eventually the Taíno people, who became the island's dominant culture by the time Europeans arrived.

Unlike the Spanish colonial period, no written census records exist for Puerto Rico's Indigenous population. Modern population estimates are based on archaeological discoveries, the size of known settlements, agricultural capacity, and accounts from early Spanish explorers.

Historians generally estimate that between 30,000 and 60,000 Taínos lived on the island in 1493, although some early Spanish chroniclers suggested much higher numbers, with estimates reaching 100,000 to 600,000. Most modern scholars consider these larger figures to be exaggerated.

The Taíno population declined rapidly during the first decades of Spanish colonization due to introduced diseases such as smallpox, forced labor under the encomienda system, warfare, and social disruption. Despite these devastating losses, Taíno ancestry, traditions, language, and culture continue to influence Puerto Rico today.

Estimated Population Before the Colonial Period

Period	Estimated Population	Historical Notes
2000–3000 BCE	Small settlements	The first known inhabitants, known as the Archaic peoples, arrived in Puerto Rico and established small hunter-gatherer communities.
500 BCE–600 CE	Growing villages	The Igneri people introduced agriculture, pottery, and more permanent settlements across the island.
1200–1493 CE	30,000–60,000 (estimated)	Taíno chiefdoms flourished throughout Borikén (Puerto Rico). Modern archaeological evidence suggests a population between 30,000 and 60,000 before European contact.
1493	30,000–60,000 (estimated)	Christopher Columbus arrived on his second voyage, marking the beginning of Spanish colonization.
1508–1515	Rapid decline	The Indigenous population declined dramatically due to introduced diseases, forced labor under the encomienda system, warfare, and displacement.
1765	44,883	The first official island-wide Spanish census was conducted by Lieutenant General Alexander O'Reilly.

Spanish Colonial Period (1765–1898)

Puerto Rico experienced remarkable population growth during the Spanish colonial period. The island's first official census, conducted in 1765 by Lieutenant General Alexander O'Reilly, recorded a population of just 44,883 residents.

Throughout the late 18th and 19th centuries, Puerto Rico's economy expanded rapidly due to the growth of the coffee and sugar industries. Fertile lands, increasing agricultural production, and expanding trade created new economic opportunities that attracted settlers from Europe, the Canary Islands, Corsica, and neighboring Caribbean islands.

Spanish immigration policies encouraged newcomers to settle on the island, particularly after the Royal Decree of Graces of 1815, which promoted immigration and economic development. As a result, Puerto Rico's population increased steadily throughout the century, reaching nearly one million inhabitants by 1899, just before Spanish rule came to an end following the Spanish-American War.

The censuses from 1765 to 1887 were taken by the Spanish government.

1765
The first island-wide census conducted by Lieutenant General Alexander O'Reilly recorded 44,883 inhabitants.

Early U.S. Administration (1899–1950)

1899
First U.S. census following the Spanish–American War. taken by the War Ministry of the United States.

1910

Since 1910 Puerto Rico has been included in every decennial census taken by the United States.

1950
Puerto Rico surpassed two million residents.

Modern Puerto Rico (1950–2000)

2000
Highest population ever recorded.

Population Decline (2000–2020)

2020
Population declined to 3.29 million.

Historical Population of Puerto Rico by Census Year

Census Year	Population	Change from Previous Census	Notes
1765	44,883	—	First island-wide census conducted by Alexander O'Reilly
1775	70,250	+56.5%
1800	155,426	+121.2%
1815	220,892	+42.1%
1832	350,051	+58.5%
1846	447,914	+28.0%
1860	583,308	+30.2%
1877	731,648	+25.4%
1887	798,565	+9.1%
1899	953,243	+19.4%	First U.S. Census after the Spanish–American War
1910	1,118,012	+17.3%
1920	1,299,809	+16.3%
1930	1,543,913	+18.8%
1940	1,869,255	+21.1%
1950	2,210,703	+18.3%	Puerto Rico surpasses 2 million residents
1960	2,349,544	+6.3%
1970	2,712,033	+15.4%
1980	3,196,520	+17.9%
1990	3,522,037	+10.2%
2000	3,808,610	+8.1%	Highest population ever recorded
2010	3,725,789	-2.2%
2019 (Estimate)	3,654,978	-0.11%
2020	3,285,874	-10.64%	Decline reflects migration and Hurricane Maria's aftermath

Looking for annual population growth? See Population Growth Rate.

Frequently Asked Questions

When was Puerto Rico's first census?
1765

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What was Puerto Rico's highest population?
3.81 million in 2000.

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Why has Puerto Rico's population declined?

Economic migration, lower birth rates, and natural disasters.

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Who conducted the first census?

Alexander O'Reilly.

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What is Puerto Rico's current population?

Include your latest estimate on another page.