🇺🇸 United States ZIP Code

STANDARD

40391

Winchester

ZIP Code 40391 is a standard zip code serving Winchester, Winchester, Kentucky (KY), in Clark County, United States. It has an estimated population of 35,262 with a median household income of $45,765. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 37.987200
Longitude: -84.178900

Geographic Details

Land Area: 239.43 mi²
Water Area: 2.52 mi²
Population Density: 147.0 people per mi² (55th percentile)
Bounding Box: 38.115118°N, 37.821798°S, -83.966310°E, -84.339955°W

With 35,262 residents spread across 239.43 square miles, this area has a population density of 147.0 people per square mile.

Demographics

35,262

Population

90th percentile

$45,765

Median Income

40th percentile

$141,100

Median Home Value

55th percentile

239.43 mi²

Land Area

The median household income in 40391 is $45,765, and the median home value is $141,100.

Housing

15,533

Total Units

14,118

Occupied Units

90.9%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Winchester, KY.

40392

Winchester

Similar ZIP Codes in Kentucky

ZIP codes with similar median household income in Kentucky.

42164

Scottsville

$41,839

40214

Louisville

$39,447

41092

Verona

$50,650

40444

Lancaster

$45,032

40045

Milton

$49,091

42327

Calhoun

$41,394

42217

Crofton

$43,750

42029

Calvert City

$49,011

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.