🇺🇸 United States ZIP Code

STANDARD

75840

Fairfield

ZIP Code 75840 is a standard zip code serving Fairfield, Fairfield, Texas (TX), in Freestone County, United States. It has an estimated population of 7,076 with a median household income of $43,723. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 31.736100
Longitude: -96.157200

Geographic Details

Land Area: 273.31 mi²
Water Area: 4.44 mi²
Population Density: 26.0 people per mi² (25th percentile)
Bounding Box: 32.012526°N, 31.611543°S, -95.925558°E, -96.259411°W

With 7,076 residents spread across 273.31 square miles, this area has a population density of 26.0 people per square mile.

Demographics

7,076

Population

60th percentile

$43,723

Median Income

35th percentile

$85,800

Median Home Value

25th percentile

273.31 mi²

Land Area

The median household income in 75840 is $43,723, and the median home value is $85,800.

Housing

3,160

Total Units

2,653

Occupied Units

84.0%

Occupancy Rate

Similar ZIP Codes in Texas

ZIP codes with similar median household income in Texas.

76941

Mertzon

$47,159

78597

South Padre Island

$45,432

77702

Beaumont

$37,783

78956

Schulenburg

$39,923

77871

Normangee

$43,047

77034

Houston

$43,905

75069

Mckinney

$45,907

76302

Wichita Falls

$44,066

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.