🇺🇸 United States ZIP Code

STANDARD

40223

Louisville

ZIP Code 40223 is a standard zip code serving Louisville, Louisville, Kentucky (KY), in Jefferson County, United States. It has an estimated population of 22,011 with a median household income of $71,014. 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: Louisville
Timezone: America/Kentucky/Louisville

Coordinates

Latitude: 38.265100
Longitude: -85.558200

Geographic Details

Land Area: 11.74 mi²
Water Area: 0.17 mi²
Population Density: 1874.0 people per mi² (80th percentile)
Bounding Box: 38.287916°N, 38.222500°S, -85.499924°E, -85.591030°W

With 22,011 residents spread across 11.74 square miles, this area has a population density of 1874.0 people per square mile.

Demographics

22,011

Population

80th percentile

$71,014

Median Income

85th percentile

$242,700

Median Home Value

80th percentile

11.74 mi²

Land Area

The median household income in 40223 is $71,014, and the median home value is $242,700. This places the area in the top 25% nationally for household income.

Housing

9,722

Total Units

9,208

Occupied Units

94.7%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Louisville, KY.

40201

Louisville

40202

Louisville

40203

Louisville

40204

Louisville

40205

Louisville

40206

Louisville

40207

Louisville

40208

Louisville

40209

Louisville

40210

Louisville

Similar ZIP Codes in Kentucky

ZIP codes with similar median household income in Kentucky.

40242

Louisville

$63,429

41017

Ft Mitchell

$67,235

40071

Taylorsville

$66,023

40056

Pewee Valley

$65,417

41001

Alexandria

$70,621

42086

West Paducah

$63,007

42366

Philpot

$63,170

41080

Petersburg

$71,875

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.