🇺🇸 United States ZIP Code

STANDARD

70665

Sulphur

ZIP Code 70665 is a standard zip code serving Sulphur, Sulphur, Louisiana (LA), in Calcasieu County, United States. It has an estimated population of 10,743 with a median household income of $59,524. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Louisiana (LA)
County: Calcasieu
City: Sulphur
Timezone: America/Chicago

Coordinates

Latitude: 30.200900
Longitude: -93.443700

Geographic Details

Land Area: 160.85 mi²
Water Area: 5.59 mi²
Population Density: 67.0 people per mi² (45th percentile)
Bounding Box: 30.216277°N, 30.051703°S, -93.300387°E, -93.622630°W

With 10,743 residents spread across 160.85 square miles, this area has a population density of 67.0 people per square mile.

Demographics

10,743

Population

70th percentile

$59,524

Median Income

70th percentile

$131,900

Median Home Value

50th percentile

160.85 mi²

Land Area

The median household income in 70665 is $59,524, and the median home value is $131,900.

Housing

4,167

Total Units

3,862

Occupied Units

92.7%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Sulphur, LA.

70663

Sulphur

70664

Sulphur

Similar ZIP Codes in Louisiana

ZIP codes with similar median household income in Louisiana.

70036

Barataria

$67,578

71037

Haughton

$64,447

70360

Houma

$66,316

70006

Metairie

$55,361

70343

Bourg

$67,621

70645

Hackberry

$62,895

70031

Ama

$61,250

70433

Covington

$62,889

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.