🇺🇸 United States ZIP Code

STANDARD

42171

Smiths Grove

ZIP Code 42171 is a standard zip code serving Smiths Grove, Smiths Grove, Kentucky (KY), in Warren County, United States. It has an estimated population of 6,841 with a median household income of $44,304. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Kentucky (KY)
County: Warren
City: Smiths Grove
Timezone: America/Chicago

Coordinates

Latitude: 37.058100
Longitude: -86.193800

Geographic Details

Land Area: 101.43 mi²
Water Area: 0.53 mi²
Population Density: 67.0 people per mi² (45th percentile)
Bounding Box: 37.166844°N, 36.906310°S, -86.018253°E, -86.278596°W

With 6,841 residents spread across 101.43 square miles, this area has a population density of 67.0 people per square mile.

Demographics

6,841

Population

60th percentile

$44,304

Median Income

40th percentile

$122,000

Median Home Value

45th percentile

101.43 mi²

Land Area

The median household income in 42171 is $44,304, and the median home value is $122,000.

Housing

2,863

Total Units

2,605

Occupied Units

91.0%

Occupancy Rate

Similar ZIP Codes in Kentucky

ZIP codes with similar median household income in Kentucky.

40330

Harrodsburg

$44,504

40204

Louisville

$46,275

40361

Paris

$40,893

42349

Horse Branch

$44,432

40004

Bardstown

$43,936

41219

Flatgap

$38,107

42141

Glasgow

$39,271

40006

Bedford

$49,453

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.