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Where am ILOCATED

Jefferson County, Kentucky

Jefferson County, Kentucky, has 795,222 residents (July 2025 estimate). Its county seat is Louisville. It uses Eastern Time and covers 381 sq mi (986 km²) of land.

Lexington-FayetteBowling Green
Jefferson County in Kentucky
Floyd CountyHarrison CountyShelby CountySpencer CountyJeffersontownSt. MatthewsShively
Jefferson County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
795,222
Land area
381 sq mi (986 km²)
County seat or government
Louisville
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$69,866 ± $1,228
Median home value
$248,400 ± $2,496
Median rent, with utilities
$1,149 ± $13
Homes lived in by their owners
62.1% ± 0.6 points
County type
County
Metro or micro area
Louisville/Jefferson County, KY-IN metro areaCentral county
Water area
16.8 sq mi (43.4 km²)
State
Kentucky
County code (FIPS)
21111
Coordinates (central point)
38.189532, -85.657624
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Jefferson County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/Kentucky/LouisvilleUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 4021445,405 people
  2. 4021644,047 people
  3. 4029942,207 people
  4. 4022941,299 people
  5. 4029141,222 people
  6. 4021939,909 people
  7. 4024539,835 people
  8. 4027238,289 people
  9. 4022035,078 people
  10. 4021833,736 people
  11. 4024130,696 people
  12. 4020728,903 people
All 43
  1. 4025826,841 people
  2. 4020524,664 people
  3. 4004723,662 people
  4. 4001423,101 people
  5. 4022322,798 people
  6. 4022221,470 people
  7. 4005920,892 people
  8. 4021520,532 people
  9. 4021120,407 people
  10. 4020620,161 people
  11. 4022818,085 people
  12. 4020317,742 people
  13. 4021316,054 people
  14. 4020815,605 people
  15. 4021214,661 people
  16. 4020414,034 people
  17. 4021013,518 people
  18. 4024312,002 people
  19. 4021711,663 people
  20. 4024211,168 people
  21. 4011810,697 people
  22. 402027,261 people
  23. 400236,870 people
  24. 401092,376 people
  25. 401771,523 people
  26. 40209639 people
  27. 40025565 people
  28. 40041564 people
  29. 40280182 people
  30. 402210 people
  31. 402310 people

43 ZIP Code areas overlap Jefferson County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

School districts in Jefferson County, largest first

  1. Jefferson County School District780,425 people
  2. Anchorage Independent School District2,597 people
  3. Jefferson County School District in Anchorage ISD2,597 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Louisville/Jefferson County, Kentucky (metro government)631,818 people
  2. Jeffersontown, Kentucky (city)29,199 people
  3. St. Matthews, Kentucky (city)17,577 people
  4. Shively, Kentucky (city)15,638 people
  5. Lyndon, Kentucky (city)11,030 people
  6. Middletown, Kentucky (city)9,763 people
  7. Douglass Hills, Kentucky (city)5,474 people
  8. Hurstbourne, Kentucky (city)4,702 people
  9. Prospect, Kentucky (city)4,542 people
  10. Indian Hills, Kentucky (city)2,897 people
  11. Graymoor-Devondale, Kentucky (city)2,802 people
  12. Anchorage, Kentucky (city)2,506 people
All 85
  1. Windy Hills, Kentucky (city)2,081 people
  2. Hurstbourne Acres, Kentucky (city)1,972 people
  3. Worthington Hills, Kentucky (city)1,957 people
  4. St. Regis Park, Kentucky (city)1,783 people
  5. Audubon Park, Kentucky (city)1,707 people
  6. West Buechel, Kentucky (city)1,599 people
  7. Coldstream, Kentucky (city)1,331 people
  8. Beechwood Village, Kentucky (city)1,292 people
  9. Heritage Creek, Kentucky (city)1,283 people
  10. Northfield, Kentucky (city)1,250 people
  11. Barbourmeade, Kentucky (city)1,247 people
  12. Plantation, Kentucky (city)1,013 people
  13. Rolling Hills, Kentucky (city)982 people
  14. Langdon Place, Kentucky (city)917 people
  15. Meadow Vale, Kentucky (city)878 people
  16. Woodlawn Park, Kentucky (city)857 people
  17. Bellemeade, Kentucky (city)851 people
  18. Houston Acres, Kentucky (city)745 people

See all 85 cities, towns and communities in Jefferson County, largest first

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Bullitt County, Kentucky15 mi south
  2. Floyd County, Indiana16 mi northwest
  3. Oldham County, Kentucky18 mi northeast
  4. Clark County, Indiana20 mi north
  5. Spencer County, Kentucky22 mi southeast
  6. Shelby County, Kentucky24 mi east
  7. Harrison County, Indiana24 mi west
  8. Hardin County, Kentucky38 mi southwest

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.