🇺🇸 United States ZIP Code

STANDARD

40031

La Grange

ZIP Code 40031 is a standard zip code serving La Grange, La Grange, Kentucky (KY), in Oldham County, United States. It has an estimated population of 22,863 with a median household income of $68,181. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Kentucky (KY)
County: Oldham
City: La Grange
Timezone: America/New_York

Coordinates

Latitude: 38.402900
Longitude: -85.392800

Geographic Details

Land Area: 66.51 mi²
Water Area: 0.93 mi²
Population Density: 344.0 people per mi² (65th percentile)
Bounding Box: 38.506323°N, 38.355847°S, -85.304534°E, -85.522302°W

With 22,863 residents spread across 66.51 square miles, this area has a population density of 344.0 people per square mile.

Demographics

22,863

Population

80th percentile

$68,181

Median Income

80th percentile

$200,900

Median Home Value

75th percentile

66.51 mi²

Land Area

The median household income in 40031 is $68,181, and the median home value is $200,900. This places the area in the top 25% nationally for household income.

Housing

7,151

Total Units

6,730

Occupied Units

94.1%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in La Grange, KY.

40032

La Grange

Similar ZIP Codes in Kentucky

ZIP codes with similar median household income in Kentucky.

41080

Petersburg

$71,875

41094

Walton

$70,143

40516

Lexington

$60,833

41075

Fort Thomas

$59,733

42103

Bowling Green

$59,942

42366

Philpot

$63,170

40515

Lexington

$68,195

42086

West Paducah

$63,007

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.