History
Jefferson County was organized around 1780 and one of a 1st 3 counties formed away from the original Kentucky County, which was still a share of Virginia at a instance (the more deuce existence Fayette and Lincoln). A county is known as for Thomas Jefferson, who was governor of Virginia at the period.

Around 2003, its government merged with that of its big city & county courthouse, Louisville, forming a recently a cappella, a Louisville-Jefferson County Metro Government (a official hanker form) or even just Louisville Metro (a official short form).

Geography
Based on data from the U.S. Census Bureau, the county has a total area of 1,032 km² (399 mi²). 997 kilometre² (385 mi²) of these are l& and 35 klick² (Baker's dozen mi²) of these are a stream. A aggregate locality is Trey.38% a water supply. A Ohio River forms its northern boundary with a state of Indiana.

Adjacent counties
Clark County, Indiana (north, through a Ohio River) Oldham County (northeast) Shelby County (east) Spencer County (southeast) Bullitt County (south) Hardin County (southwest) Harrison County, Indiana (west, across a Ohio Flow of any stream) Floyd County, Indiana (northwest, across a Ohio Flow of any stream)

Demographics
When of the census² of 2000, there are 693,604 people, 287,012 households, and 183,113 families residing in the county. A population density is 695/km² (1,801/mi²). There are 305,835 housing units at an typical density of 307/km² (794/mi²). A racial makeup of the county is 77.38% White, 18.88% Black or African American, 0.22% Native American, 1.39% Asian, 0.04% Pacific Islander, 0.68% from other races, and 1.42% from two or more races. Unity.78% of the people come Hispanic or Latino of any race.

There are 287,012 home away from which Xxix.60% keep around tikes under a age of Xviii swallow the babies, 45.20% come married couples living together, 14.70% have a female homeowner by having there is no married man present, & 36.20% come non-families. Xxx.50% of everthing family come processed higher of souls & Tenner.30% own individual residing alone world health organization is 65 years aged or even older. A typical menage size is Deuce.37 & a typical personal size is Deuce.97.

In a county the people is spread retired by owning Twenty-four.30% under a age of Xviii, Eight.90% from either 18 to Two dozen, Thirty.40% from either 25 to 44, Xxii.80% from either 45 to 64, & Baker's dozen.50% world health organization come 65 years aged or even older. A median age is 37 years. For each Centred females there are 91.Sixty males. For each Hundred females age Eighteen & terminated, there are 87.Sixty males.

the median income for a house in the county is $39,457, & the median income for a personal is $49,161. Males have a median income of $36,484 versus $26,255 for females. A per capita income for the county is $22,352. Xii.40% of the people & Ix.50% of families come in a image below the poverty line. Away from a sum people, Eighteen.10% of victims under a age of 18 & 8.80% of victims 65 & older come residing beneath a poverty level.

Cities and towns
NOTE: Since a formation of Louisville Metro in January 6, 2003, residents of the cities below too became citizens of the fresh expanded Tube, however none of the incorporated pages has dissolved in the run. A functions at one time served per county government for the town were assumed by Louisville Metro. Still, a previous City of Louisville was profits absorbed into a freshly city-county government.

| |- | breadth="25%" align="left" style="vertical-align: top; " | Anchorage Audubon Park Bancroft Barbourmeade Beechwood Village Bellemeade Bellewood Blue Ridge Manor Briarwood Broad Fields Broeck Pointe Brownsboro Farm Brownsboro Village Buechel † Cambridge Cherrywood Village Coldstream Creekside Crossgate Douglass Hills Druid Hills Fairdale † Fairmeade Fern Creek † Fincastle | breadth="25%" align="left" style="vertical-align: top; " | Forest Hills Glenview Hills Glenview Manor Glenview Goose Creek Graymoor-Devondale Green Spring Hickory Hill Highview † Hills and Dales Hollow Creek Hollyvilla Houston Acres Hurstbourne Acres Hurstbourne Indian Hills Jeffersontown Keeneland Kingsley Langdon Place Lincolnshire Louisville Lyndon Lynnview Manor Creek | breadth="25%" align="left" style="vertical-align: top; " | Maryhill Estates Meadow Vale Meadowbrook Farm Meadowview Estates Middletown Minor Lane Heights Mockingbird Valley Moorland Murray Hill Newburg † Norbourne Estates Northfield Norwood Okolona † Old Brownsboro Place Parkway Village Plantation Pleasure Ridge Park † Plymouth Village Poplar Hills Prospect Richlawn Riverwood Rolling Fields Rolling Hills | breadth="25%" align="left" style="vertical-align: top; " | Seneca Gardens Shively South Park View Spring Mill Spring Valley Springlee St. Dennis † St. Matthews St. Regis Park Strathmoor Manor Strathmoor Village Sycamore Ten Broeck Thornhill Valley Station † Watterson Park Wellington West Buechel Westwood Whipps Millgate Wildwood Windy Hills Woodland Hills Woodlawn Park Worthington Hills |}