🇺🇸 United States ZIP Code

STANDARD

78118

Karnes City

ZIP Code 78118 is a standard zip code serving Karnes City, Karnes City, Texas (TX), in Karnes County, United States. It has an estimated population of 3,976 with a median household income of $40,385. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Texas (TX)
County: Karnes
City: Karnes City
Timezone: America/Chicago

Coordinates

Latitude: 28.882800
Longitude: -97.907100

Geographic Details

Land Area: 181.24 mi²
Water Area: 1.34 mi²
Population Density: 22.0 people per mi² (25th percentile)
Bounding Box: 29.108039°N, 28.706151°S, -97.737168°E, -98.172324°W

With 3,976 residents spread across 181.24 square miles, this area has a population density of 22.0 people per square mile.

Demographics

3,976

Population

50th percentile

$40,385

Median Income

30th percentile

$72,600

Median Home Value

15th percentile

181.24 mi²

Land Area

The median household income in 78118 is $40,385, and the median home value is $72,600.

Housing

1,640

Total Units

1,333

Occupied Units

81.3%

Occupancy Rate

Similar ZIP Codes in Texas

ZIP codes with similar median household income in Texas.

79248

Paducah

$34,361

78629

Gonzales

$42,807

75051

Grand Prairie

$40,107

79316

Brownfield

$36,667

75944

Etoile

$42,500

79013

Cactus

$42,349

78597

South Padre Island

$45,432

76574

Taylor

$45,011

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.