🇺🇸 United States ZIP Code

STANDARD

40509

Lexington

ZIP Code 40509 is a standard zip code serving Lexington, Lexington, Kentucky (KY), in Fayette County, United States. It has an estimated population of 32,364 with a median household income of $66,806. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Kentucky (KY)
County: Fayette
City: Lexington
Timezone: America/New_York

Coordinates

Latitude: 38.010200
Longitude: -84.427400

Geographic Details

Land Area: 41.12 mi²
Water Area: 0.23 mi²
Population Density: 787.0 people per mi² (75th percentile)
Bounding Box: 38.061361°N, 37.931761°S, -84.282629°E, -84.458301°W

With 32,364 residents spread across 41.12 square miles, this area has a population density of 787.0 people per square mile.

Demographics

32,364

Population

90th percentile

$66,806

Median Income

80th percentile

$205,400

Median Home Value

75th percentile

41.12 mi²

Land Area

The median household income in 40509 is $66,806, and the median home value is $205,400. This places the area in the top 25% nationally for household income.

Housing

15,131

Total Units

13,708

Occupied Units

90.6%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Lexington, KY.

40502

Lexington

40503

Lexington

40504

Lexington

40505

Lexington

40506

Lexington

40507

Lexington

40508

Lexington

40510

Lexington

40511

Lexington

40512

Lexington

Similar ZIP Codes in Kentucky

ZIP codes with similar median household income in Kentucky.

40222

Louisville

$59,135

41043

Foster

$57,218

41007

California

$56,824

40502

Lexington

$60,331

41051

Independence

$69,901

40241

Louisville

$75,259

40109

Brooks

$57,868

40324

Georgetown

$62,548

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.