| ZIP Codes: | 39 ZIP Codes (14 Standard, 19 PO Box, 6 Unique) [See All] |
| Area Codes: | 502 / 859 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:18 PM |
| Population: | 324,356 [See All] |
| FIPS: | 21067 |
| CBSA: | Lexington-Fayette, KY |
| Land Area: | 305 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 38.0434, -84.5037 |
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324,356 residents live across 39 ZIPs covering 305 sq mi, served by 1 distinct USPS-recognized cities.
Population moved from 303,050 to 321,973 from 2014 to 2024 — a +6.2% change. 6 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 40510 (Lexington, $161,938 median) and poorest ZIP 40508 (Lexington, $29,440) are 4.9 miles apart — a 5.5× income gap across local geography.
Median home values vary 3.9× across this county — from $179,200 in 40505 (Lexington) to $695,400 in 40510 (Lexington).
Density varies 112× across the county — from 83 people/sq mi in 40510 (Lexington) to 9,272 in 40526 (Lexington).
Most of the decade's growth concentrated around Lexington — top growth ZIPs averaged +28.9% over the past ten years ( 40509 , 40507 and 40511 ).
Educational attainment ranges from 25.2% bachelor's+ in 40505 (Lexington) to 73.4% in 40513 (Lexington) — the breadth of educational profiles across the area.
Within Kentucky, this is the #2 most populous of 120 counties and ranks #11 for median household income with the #27 fastest decade growth .
Hosts 4 single-entity Unique ZIPs: 40526University Of Ky Res Halls ; 40506University Of Ky ; 40536University Of Ky Med Ctr ; and 40546University Of Ky Agri Dept .
Weighted by population, the typical household earns about $73,938 across the county — reflecting what a typical resident sees, not a simple ZIP average.
48.3% of adults age 25+ hold a bachelor's degree or higher (102,393 of 212,089 reporting). The most-educated ZIPs cluster around Lexington.
14 Standard delivery, 19 PO Box only, 6 single-entity Unique ZIPs serve this county.
3 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
6 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 5.5× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 40509 | Lexington | Standard | 47,036 | $94,804 | 48.3 | 36.5% |
| 40511 | Lexington | Standard | 38,176 | $79,540 | 87.4 | 22.6% |
| 40515 | Lexington | Standard | 37,384 | $86,268 | 56.7 | 7.0% |
| 40517 | Lexington | Standard | 35,656 | $53,670 | 6.2 | -1.4% |
| 40503 | Lexington | Standard | 27,451 | $76,482 | 8.7 | -2.3% |
| 40502 | Lexington | Standard | 26,122 | $76,948 | 7.5 | -2.0% |
| 40504 | Lexington | Standard | 25,816 | $46,055 | 6.0 | -1.2% |
| 40505 | Lexington | Standard | 25,594 | $58,206 | 8.0 | -4.4% |
| 40508 | Lexington | Standard | 23,756 | $29,440 | 4.4 | -8.2% |
| 40514 | Lexington | Standard | 16,961 | $95,914 | 3.2 | 14.8% |
| 40513 | Lexington | Standard | 11,032 | $128,013 | 14.6 | -1.5% |
| 40516 | Lexington | Standard | 2,926 | $84,510 | 30.0 | 1.5% |
| 40526 | Lexington | Unique | 2,383 | — | 0.3 | — |
| 40507 | Lexington | Standard | 2,159 | $41,329 | 0.4 | 27.7% |
| 40510 | Lexington | Standard | 1,904 | $161,938 | 22.9 | -16.9% |
| 40536 | Lexington | Unique | 0 | — | 0.1 | — |
| 40578 | Lexington | PO Box | — | — | 0.0 | — |
| 40582 | Lexington | PO Box | — | — | 0.0 | — |
| 40581 | Lexington | PO Box | — | — | 0.0 | — |
| 40576 | Lexington | PO Box | — | — | 0.0 | — |
| 40598 | Lexington | Unique | — | — | 0.0 | — |
| 40580 | Lexington | PO Box | — | — | 0.0 | — |
| 40579 | Lexington | PO Box | — | — | 0.0 | — |
| 40574 | Lexington | PO Box | — | — | 0.0 | — |
| 40575 | Lexington | PO Box | — | — | 0.0 | — |
| 40577 | Lexington | PO Box | — | — | 0.0 | — |
| 40583 | Lexington | PO Box | — | — | 0.0 | — |
| 40550 | Lexington | Unique | — | — | 0.0 | — |
| 40512 | Lexington | PO Box | — | — | 0.0 | — |
| 40544 | Lexington | PO Box | — | — | 0.0 | — |
| 40533 | Lexington | PO Box | — | — | 0.0 | — |
| 40588 | Lexington | PO Box | — | — | 0.0 | — |
| 40523 | Lexington | PO Box | — | — | 0.0 | — |
| 40524 | Lexington | PO Box | — | — | 0.0 | — |
| 40522 | Lexington | PO Box | — | — | 0.0 | — |
| 40591 | Lexington | PO Box | — | — | 0.0 | — |
| 40546 | Lexington | Unique | — | — | 0.1 | — |
| 40506 | Lexington | Unique | — | — | 0.1 | — |
| 40555 | Lexington | PO Box | — | — | 0.0 | — |