State bird
Northern cardinal
Sources: Designation & background
Local timeFrankfort ·
U.S. States / South · Card 017
Kentucky
The Bluegrass State
Mammoth Cave National Park protects a vast cave system beneath a landscape of hills and river valleys.
Kentucky and its surroundings
● State capital · Gold highlights Kentucky.
Map: Natural Earth. Neighboring states use postal abbreviations.
Map: Natural Earth. Neighboring states use postal abbreviations.
At a glance
- Capital
- Frankfort
- Postal abbreviation
- KY
- Population
- 4,606,864July 1, 2025 · Census estimate
- Total area
- 104,656 km²40,408 square miles · land and water
- Statehood
- June 1, 1792State number 15
- Region
- South
Sources: Census · population · Census · area
State symbols & traditions
State song
My Old Kentucky Home
Sources: Designation & background
Geography & flag
01
Location
Neighboring states: Illinois, Indiana, Missouri, Ohio, Tennessee, Virginia, West Virginia.
02
Landscape & places
Mammoth Cave National Park protects a vast cave system beneath a landscape of hills and river valleys. Its underground passages are part of a water-shaped limestone landscape, while the surface supports forests and a long record of human use.
03
Land and water
The total area includes 102,269 km² of land and 2,387 km² of water, according to Census area measurements.
State flag
The state seal and sprays of goldenrod on blue, with Commonwealth of Kentucky above.
Sources: Census · geographic reference · Census · area measurements · National Park Service · Mammoth Cave
How the landscape works
In a limestone landscape, water can travel underground as well as along visible streams. Cave passages and the surface above them belong to a connected system. Looking only at a surface river map can therefore miss part of the route water takes. Mammoth Cave helps make an otherwise hidden part of the landscape visible.
History
Kentucky’s failed attempt at Civil War neutrality
Kentucky allowed slavery but did not secede from the United States. Its residents had ties to both sides, and state leaders tried to avoid war by declaring neutrality in 1861. That meant asking both Union and Confederate forces to stay out.
The policy could not last once armies entered the state. Kentucky’s official government remained with the Union, while residents served in both armies. Its rivers, transportation routes and resources made the state strategically important. Kentucky’s experience shows why “slave state” and “Confederate state” do not mean the same thing.
Read more: Historical source ↗
Why this mattered
Kentucky’s declared neutrality did not remove its strategic value to Union and Confederate forces. Its position and divided loyalties placed it under pressure from both sides. Once forces entered the state, neutrality was difficult to maintain. A government’s declared policy and what military actors do on the ground are not necessarily the same.
Key dates
-
Statehood · State number 15
-
Boundary dispute with Tennessee resolved
Sources: Congressional Research Service · statehood · U.S. Census Bureau · historical geography · National Park Service
People and place
Indigenous history and communities today
Mammoth Cave’s human history extends far beyond modern park tourism. Its historical resources provide a starting point for learning about early use of the caves and the cultural connections that a purely geological explanation would omit.
Continue with National Park Service: Indigenous connections to Mammoth Cave. This is one starting point, not a complete account of the peoples connected to this land.
Compare
Kentucky and Illinois
| Measure | Kentucky | Illinois |
|---|---|---|
| Population (2025) | 4,606,864 | 12,719,141 |
| Land area (km²) | 102,269 | 143,793 |
| People per km² of land | 45.0 | 88.5 |
Illinois has more people per square kilometer of land. Population density divides population by land area. It is an average across the whole jurisdiction, not a claim that residents are evenly spread out.
Calculated from the Census population series and land-area measurements used on these pages. Rounded figures; water area is excluded. Explore Illinois.
Economy
Main activities
In 2025, manufacturing was the largest of the broad industry groups compared here by current-dollar output. Other major groups included government and government enterprises, real estate and rental and leasing, and educational services, health care, and social assistance.
Total economic output was $306.9 billion in current dollars in 2025.
Largest industry groups · 2025
- Manufacturing: 15.9%
- Government and government enterprises: 11.8%
- Real estate and rental and leasing: 11.6%
- Educational services, health care, and social assistance: 9.9%
Share of total current-dollar GDP. These figures measure output, not employment.
Sources: BEA · annual GDP by state, SAGDP2
Production, jobs and wages answer different questions
The industry chart measures the value of production. It does not count workers. An industry with a large share of GDP need not employ the most people or pay the highest wages. Employment and wage data would be needed to answer those questions.
Population & economic trends
Population, 2020–2025
Millions of people4.612025 · millions of people
July 1 resident population estimates, using the Census Bureau’s Vintage 2025 series.
Sources: U.S. Census Bureau
View data table
| Year | People |
|---|---|
| 2020 | 4,508,271 |
| 2021 | 4,508,348 |
| 2022 | 4,521,238 |
| 2023 | 4,549,953 |
| 2024 | 4,584,046 |
| 2025 | 4,606,864 |
Real GDP, 2010–2025
Billions of chained 2017 dollars233.242025 · billions of chained 2017 dollars
Real GDP measures economic output adjusted for inflation. The chart uses BEA’s chained 2017 dollars.
Sources: U.S. Bureau of Economic Analysis
View data table
| Year | Millions of chained 2017 dollars |
|---|---|
| 2010 | 186,720.6 |
| 2011 | 188,389.8 |
| 2012 | 192,060.1 |
| 2013 | 196,698.0 |
| 2014 | 196,795.8 |
| 2015 | 199,487.1 |
| 2016 | 201,007.2 |
| 2017 | 203,564.0 |
| 2018 | 205,940.1 |
| 2019 | 211,783.1 |
| 2020 | 206,601.9 |
| 2021 | 215,535.0 |
| 2022 | 220,641.8 |
| 2023 | 226,942.4 |
| 2024 | 230,966.4 |
| 2025 | 233,243.1 |
Read the trend, then ask what explains it
Kentucky’s population increased by about 2.2% between 2020 and 2025 in this series. That shows the size of the change. The chart alone cannot tell us how much came from births, deaths or migration.
Real GDP adjusts for changes in prices, so it helps compare production over time. Current-dollar GDP includes price changes. Neither measure tells us how income is distributed among residents.
Representation
- Electoral votes
- 82024 & 2028 elections
- Voting U.S. House seats
- 62020 Census allocation
- U.S. Senate seats
- 2
Electoral votes equal the state’s U.S. House seats plus its two U.S. Senate seats. These allocations apply to the 2024 and 2028 presidential elections.
Practice
Test your knowledge
Use the explanations and data on this page to answer ten questions. Hints and links to the relevant sections are available throughout.
10 questions about Kentucky
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Sources & notes
Narrative and quiz updated 5 October 2026. Statistical data prepared 27 September 2026. Population: Census Bureau Vintage 2025, July 1 estimates for 2020–2025. Real GDP: BEA annual state accounts, SAGDP9, millions of chained 2017 dollars; industry shares: SAGDP2, current dollars. Data downloaded 27 September 2026. Area measurements include land and water.
Sources: Census · population estimates · BEA · state GDP · Census · area measurements · Natural Earth · map data
The capital clock shows current local time. Statistical figures are dated estimates and may be revised.
Updated 29 October 2026. Statistics retain the dated series shown in the charts; these are not live figures. Sources are linked beside each topic.