🇺🇸 United States ZIP Code

STANDARD

40118

Fairdale

ZIP Code 40118 is a standard zip code serving Fairdale, Fairdale, Kentucky (KY), in Jefferson County, United States. It has an estimated population of 9,724 with a median household income of $40,702. The area falls within the America/Kentucky/Louisville timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Kentucky (KY)
County: Jefferson
City: Fairdale
Timezone: America/Kentucky/Louisville

Coordinates

Latitude: 38.108700
Longitude: -85.754900

Geographic Details

Land Area: 13.68 mi²
Water Area: 0.12 mi²
Population Density: 711.0 people per mi² (75th percentile)
Bounding Box: 38.127071°N, 38.065842°S, -85.701074°E, -85.797326°W

With 9,724 residents spread across 13.68 square miles, this area has a population density of 711.0 people per square mile.

Demographics

9,724

Population

65th percentile

$40,702

Median Income

30th percentile

$97,600

Median Home Value

30th percentile

13.68 mi²

Land Area

The median household income in 40118 is $40,702, and the median home value is $97,600.

Housing

4,022

Total Units

3,772

Occupied Units

93.8%

Occupancy Rate

Similar ZIP Codes in Kentucky

ZIP codes with similar median household income in Kentucky.

41031

Cynthiana

$34,930

42303

Owensboro

$44,872

42027

Boaz

$43,218

42171

Smiths Grove

$44,304

41164

Olive Hill

$34,716

42733

Elk Horn

$42,545

41098

Worthville

$40,849

42327

Calhoun

$41,394

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.