Hawaii

Kauai

73,298
2020 population
1900
first census record
13
census records

About Kauai

Kauai, Hawaii, first appears in the United States federal census in 1900, when it recorded a population of 20,734. At the most recent census, in 2020, its population stood at 73,298.

The county's recorded population has risen across the decades to its highest level in 2020.

On the ground today, 5 documented military engagements have been recorded within the county, among them Battle of Koapapa (Final Kauai Campaign), First Kauai Campaign (1796) — Storm Dispersal, Second Kauai Campaign (1804) — Plague, and 41 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
202073,298
201067,091
200058,463
199051,177
198039,082
197029,761
196028,176
195029,905
194035,818
193035,942
192029,438
191023,952
190020,734
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Kauai

Military engagements that took place in Kauai, Hawaii.

Battle of Koapapa (Final Kauai Campaign)
1796
First Kauai Campaign (1796) — Storm Dispersal
1796
Second Kauai Campaign (1804) — Plague
1804
Cession of Kauai (1810)
1810
Niihau Incident (Hawaii 1941)
1941

Historic places in Kauai

National Register of Historic Places listings in Kauai, Hawaii.

Hanalei Pier
Hanalei
Menehune Fishpond
Lihue
Waioli Mission District
Hanalei
Opaekaa Road Bridge
Kapaa
Grove Farm
Lihue
Grove Farm Company Locomotives
Puhi
Gulick-Rowell House
Waimea
Lihue Hongwanji Mission
Lihue
Kong Lung Store
Kilauea
Yamase Building
Waimea
Seto Building
Kapaa
Bishop National Bank of Hawaii
Waimea
Wilcox, Albert Spencer, Building
Lihue
Civilian Conservation Corps Camp in Kok'e State Park
Koke'e
Pu'u'opae Bridge
Kapa'a
Coco Palms Resort
Kapaa
Cook Landing Site
Waimea
Lihue Civic Center Historic District
Lihue
Haraguchi Rice Mill
Hanalei
Kilauea School
Kilauea
Kikiaola
Waimea
Haena Archeological Complex
Hanalei
Hanalei Elementary School
Hanalei
Hanapepe Town Lot No. 18
Hanapepe
Browse all Hawaiihistoric sites ›

Other counties in Hawaii

Explore census history and historic records for more Hawaii counties.

KalawaoLanaiMauiMolokaiNiihauOahuPalmyraHawaiiHonoluluKahoolawe
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Everything a full report reveals about Kauai County, Hawaii

This page charts the census history of Kauai County, Hawaii. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Kauai

When does Kauai first appear in the US census?
Kauai, Hawaii first appears in the federal census in 1900, with a recorded population of 20,734.
What is the population of Kauai?
At the most recent federal census (2020), Kauai had a recorded population of 73,298.
Were any battles fought in Kauai?
5 documented military engagements took place in Kauai, including Battle of Koapapa (Final Kauai Campaign), First Kauai Campaign (1796) — Storm Dispersal, Second Kauai Campaign (1804) — Plague.
How many historic places are in Kauai?
41 sites are listed on the National Register of Historic Places in Kauai, Hawaii.
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