Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/LA/GRAND-COTEAU

Grand Coteau ZIP code, Louisiana

The ZIP code for Grand Coteau, LA is 70541, and its area code is 337.

USPS city name
1 ZIP code
Overlapping the city
3 more
Population
959
Area code
337

NANPA lists no telephone rate centre for Grand Coteau itself, so these are the area codes of the nearest one, Leonville (4.5 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Grand Coteau uses the ZIP code above. 3 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Grand Coteau in numbers

About 959 people live in Grand Coteau, in 486 households. The median household income is $34,730 a year, 43% below the Louisiana median of $60,756 (US: $80,734). The median owner-occupied home is valued at $117,500 (46% below the Louisiana median), and median gross rent is $678 a month. The median age is 54.9; 20.5% of adults 25 and over hold a bachelor's degree or higher (27.0% across Louisiana); the average commute takes 24 minutes.

Population959Grand Coteau959
Households486Grand Coteau486
Median age54.9Grand Coteau54.9Louisiana38.0US 38.9
Median household income$34,730Grand Coteau$34,730Louisiana$60,756US $80,734
Median home value$117,500Grand Coteau$117,500Louisiana$216,500US $332,700
Median gross rent$678Grand Coteau$678Louisiana$1,064US $1,413
Bachelor's degree or higher20.5%Grand Coteau20.5%Louisiana27.0%US 35.7%
Mean commute23.6 minGrand Coteau23.6 minLouisiana25.7 minUS 26.4 min
Population density396 / sq miGrand Coteau396 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Grand Coteau town. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Grand Coteau

ZIP codes with the USPS city name Grand Coteau
ZIP City Type Population Median income Median home
70541 Grand Coteau , LA Standard 858 $48,264 $88,400

Other ZIP codes overlapping Grand Coteau

These ZIP codes cover part of Grand Coteau but are addressed as somewhere else.

ZIP codes overlapping Grand Coteau
ZIP City Type Population Median income Median home
70512 Arnaudville , LA Standard 10,740 $47,313 $166,700
70570 Opelousas , LA Standard 37,565 $44,612 $142,800
70584 Sunset , LA Standard 7,481 $62,281 $193,800

Map of Grand Coteau ZIP codes

The ZIP codes of Grand Coteau, LA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Grand Coteau

The nearest larger towns are Sunset (3,074 people, 1.5 mi), Leonville (1,395 people, 4.6 mi) and Arnaudville (1,239 people, 6.8 mi).

Towns near Grand Coteau
TownPopulationDistance
Sunset 3,074 1.5 mi
Carencro 11,619 7.4 mi
Opelousas 15,495 7.6 mi
Church Point 4,096 10.2 mi
Breaux Bridge 7,501 12.5 mi
Scott 8,609 12.8 mi
Lafayette 121,715 14.9 mi
Rayne 7,105 18.2 mi
Broussard 14,322 20.2 mi
Milton 2,793 21.2 mi
Maurice 2,584 22.3 mi
Youngsville 17,427 22.6 mi
Eunice 9,239 22.9 mi
Ville Platte 6,253 23.1 mi

More nearby: every ZIP code in St. Landry Parish · Louisiana ZIP codes

Cite this page

zipcodes.pro. “Grand Coteau, LA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/la/grand-coteau

Underlying data is public domain or openly licensed — sources, vintages and licences.