Jefferson County, Kentucky
Jefferson County: county in Alabama, United States
About
Jefferson County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 741,096 and a population density of 255 people per km². After 10 years in 2020 county had an estimated population of 767,452 inhabitants. Its county seat is Birmingham. The county was created 206 years ago in 1819.
County Snapshot
Jefferson County at a glance
Jefferson County currently has 92 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
92
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Kentucky counties
120
Open related pagesLargest city
LouisvillePopulation 760,026
Top linked places
Quick Facts about Jefferson County
| Population | 767,452 (2020) |
| Country | United States of America |
| State | Kentucky (United States) |
| Different from | Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson County, Jefferson Parish, Jefferson County, Jefferson County, Jefferson County, Jefferson County |
| Plate code | 1 |
| Area | 2911 km2 |
| Water as percent of area | 1.1% |
| Land as percent of area | 98.9% |
| Latitude & Longitude | 38.1872,-85.6592 |
| Named for | Thomas Jefferson |
| Altitude | 509 feet / 155 meters |
| Capital | Birmingham |
| Establishment | December 13, 1819 |
| Time Zone | America/Kentucky/Louisville |
| Local time | 18:55:56 (15th April 2026) |
| Density | 264 Pop. per km² as of 2020 |
| Population growth | 3.43% (2010-2020) |
| Weather | 86℉ Partly Sunny 7-days weather |
Jefferson County Courthouse Birmingham Nov 2011 02 image
Geography
Jefferson County is located at 38°11'14"N 85°39'33"W (38.1871900, -85.6591600). It has 6 neighbors: Bibb County, Blount County, Saint Clair County, Shelby County, Tuscaloosa County and Walker County.
Jefferson County map
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The largest city of Jefferson County is Louisville with a population of 760,026. Other cities include, Jeffersontown population 27,562, Valley Station population 22,756, Newburg population 19,967 and Fern Creek population 18,409. See all Jefferson County cities & populated places.
Jefferson County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Jefferson County.
| City Name | Population | Title |
|---|---|---|
| Louisville | 760,026 | The nineteenth most populous city in the United States and the center of the Louisville metropolitan area. |
| Jeffersontown | 27,562 | City in Jefferson County, Kentucky, United States of America |
| Valley Station | 22,756 | Human settlement in Louisville, Kentucky, United States of America |
| Newburg | 19,967 | City in Phelps County, Missouri, United States |
| Fern Creek | 18,409 | City in Louisville, Kentucky, United States of America |
| Saint Matthews | 17,985 | City |
| Okolona | 17,134 | City in Chickasaw County, Mississippi, United States of America |
| Shively | 15,690 | Home rule-class city in Jefferson County, Kentucky, United States |
| Highview | 15,167 | City in Louisville, Kentucky, United States of America |
| Lyndon | 11,445 | City in the United States |
| Saint Dennis | 9,177 | Human settlement in Jefferson County, Kentucky, United States of America |
| Fairdale | 8,148 | City in Walsh County, North Dakota, United States of America |
| Middletown | 7,898 | City in Kentucky |
| Buechel | 7,287 | Human settlement in Louisville, Kentucky, United States of America |
| Douglass Hills | 5,714 | City in Jefferson County, Kentucky, United States of America |
| Prospect | 4,842 | City in Kentucky |
Weather
86°F
Partly Sunny
9 to 14 mph SW
Today
Partly sunny, with a high near 86. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
7-Day ForecastOfficial website of Jefferson County
Official Website- Birmingham
Demographics
The population of Jefferson County increased by 3.43% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 741,096 | - | census |
| 2011 | 746,361 | 0.71% | estimation process |
| 2012 | 751,629 | 0.7% | estimation process |
| 2013 | 759,183 | 1% | estimation process |
| 2014 | 761,725 | 0.33% | estimation process |
| 2015 | 764,946 | 0.42% | estimation process |
| 2016 | 767,464 | 0.33% | estimation process |
| 2017 | 769,828 | 0.31% | estimation process |
| 2018 | 768,101 | -0.22% | estimation process |
| 2019 | 766,757 | -0.18% | estimation process |
| 2020 | 767,452 | 0.09% | estimation process |
Map of countries with a smaller population than Jefferson County
Comitatul Jefferson, Comte de Jefferson, Comté de Jefferson, Condado de Jefferson, Condado han Jefferson, Contea di Jefferson, Dzhefersun, Dzhefferson, Hrabstwo Jefferson, Jeferson srjan, Jefferson, Jefferson Kun, Jefferson Kūn, Jefferson konderria, Jefferson megye, Jeffersoni maakond, Okrug DZeferson, Quan Jefferson, Quận Jefferson, jefason jun, jepharasana ka'unti, jie fu xun xian, mqatʿt jyfyrswn, shhrstan jfrswn kntaky, Джеферсън, Джефферсон, Округ Џеферсон, Ջեֆերսոն շրջան, جیفرسن کاؤنٹی، کینٹکی, شهرستان جفرسون، کنتاکی, مقاطعة جيفيرسون, জেফারশন কাউন্টি, ジェファーソン郡, 傑佛遜縣
People born in Jefferson County (12)
People born in Jefferson County, including baseball player Willie Mays, politician and businessman James D. Martin, Player of football Bob Gresham, .
More notable people
- Jimmy Staggs (American DJ) he was born in 07/10/1935
- Paul Lehner (American baseball player) he was born in 01/07/1920
- Thomas Harrison (Confederate States Army brigadier general during the American Civil War) he was born in 01/05/1823
- Ernie Walker (American baseball player) he was born in 17/09/1890
- Thomas McAdory Owen (American lawyer, author, and historian) he was born in 19/11/1866
- Edmundson Parkes (American businessman) he was born in 22/11/1904
- David B. Todd Jr. he was born in 01/01/1935
- Martha Crystal Myers (American obstetrician, medical missionary in Yemen) she was born in 13/03/1945
- Josephus C. Vines (American politician, mayor of Brighton, Alabama) he was born in 10/07/1873
Other places with the same name (24)
- Jefferson County, Alabama county in Alabama, United States with a population of 655,342 people.
- Jefferson County, Colorado county in Colorado, United States with a population of 583,283 people.
- Jefferson County, Texas county in Texas, United States with a population of 250,127 people.
- Jefferson County, Missouri county in Missouri, United States with a population of 226,543 people.
- Jefferson County, New York county in New York, United States with a population of 108,095 people.
- Jefferson County, Wisconsin county in Wisconsin, United States with a population of 85,038 people.
- Jefferson County, Arkansas county in Arkansas, United States with a population of 65,377 people.
- Jefferson County, Ohio county in Ohio, United States with a population of 64,939 people.
- Jefferson County, West Virginia county in West Virginia, United States with a population of 57,486 people.
- Jefferson County, Tennessee county in Tennessee, United States with a population of 55,307 people.
- Jefferson County, Pennsylvania county in Pennsylvania, United States with a population of 43,108 people.
- Jefferson County, Illinois county in Illinois, United States with a population of 37,235 people.
- Jefferson County, Washington county in the state of Washington, United States with a population of 32,700 people.
- Jefferson County, Indiana county in Indiana, United States with a population of 32,110 people.
- Jefferson County, Idaho county in Idaho, United States with a population of 29,871 people.
- Jefferson County, Oregon county in Oregon, United States with a population of 24,856 people.
- Jefferson County, Kansas county in Kansas, United States with a population of 19,032 people.
- Jefferson County, Iowa county in Iowa, United States with a population of 18,347 people.
- Jefferson County, Georgia county in Georgia, United States with a population of 15,267 people.
- Jefferson County, Florida county in Florida, United States of America with a population of 14,543 people.
- Jefferson County, Montana county in Montana, United States with a population of 12,360 people.
- Jefferson County, Nebraska county in Nebraska, United States with a population of 7,099 people.
- Jefferson County, Mississippi county in Mississippi, United States with a population of 6,997 people.
- Jefferson County, Oklahoma county in Oklahoma, United States with a population of 5,949 people.
Kentucky Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Louisville | 760,026 | The nineteenth most populous city in the United States and the center of the Louisville metropolitan area. |
| Fayette County | 324,735 | County in West Virginia, United States |
| Lexington-Fayette | 314,488 | The most populous city in Kentucky and the center of the Lexington-Fayette metropolitan area. |
| Meads | 288,649 | A census-designated place located in Meade County, Kentucky. |
| Ironville | 288,649 | A city located in Lawrence County, Kentucky. |
| Lexington | 225,366 | The second most populous city in Kentucky. |
| Kenton County | 167,949 | County in Kentucky, United States |
| Boone County | 135,396 | County in Kentucky, United States |
| Warren County | 134,510 | County in Kentucky, United States |
| Hardin County | 111,309 | County in Tennessee, United States |
| Daviess County | 101,978 | County in Kentucky, United States |
| Madison County | 94,265 | County in Kentucky, United States |
| Campbell County | 94,020 | County in northeastern Wyoming, United States |
| Bullitt County | 82,182 | County in Kentucky, United States |
| Christian County | 71,478 | County in Missouri, United States |
| Bowling Green | 70,631 | The most populous city in Warren County, Kentucky. |