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City ZIP codes · Louisiana

Sulphur, LA ZIP Codes

3 ZIP codes use the postal name Sulphur, Louisiana (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Median household income runs from $64,707 in 70663 to $86,573 in 70665, 1.3 times as much (Census Bureau, ACS 2020-2024). Sulphur's most populous ZIP code is 70663, with 27,799 people (ACS 2020-2024); 10% of its land is in the city of Sulphur.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Sulphur's ZIP codes?

70663: $65k median household income70665: $87k median household income706657066370663: $65k median household income70665: $87k median household income706657066370663: $65k median household income70665: $87k median household income7066570663
The 2 residential ZIP codes named Sulphur, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Sulphur's ZIP codes?

The highest median household income is in 70665 ($86,573), the lowest in 70663 ($64,707). Home values run from $180,600 in 70663 to $236,800 in 70665.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 2 residential ZIP codes of Sulphur

Residential ZIP codes with the postal name Sulphur, LA, largest first (ACS 2020-2024); sort by any column
County
70663 Calcasieu Parish 27,799 284 $65k $181k
70665 Calcasieu Parish 13,222 86 $87k $237k

Download the 3 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Sulphur

1 ZIP code named Sulphur has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Sulphur, LA: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
70664Calcasieu Parish

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Sulphur's ZIP codes reach?

Sulphur's residential ZIP codes lie in Calcasieu Parish.

Which places do Sulphur's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Sulphur's residential ZIP codes cover Sulphur itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Carlyss census-designated 70665

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Sulphur's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Sulphur starts with 706.

Three-digit prefixes of Sulphur's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Sulphur's
PrefixSectional centerHereAll codes
706 Lafayette, LA (SCF 705) 3 44

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.