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County ZIP codes · Louisiana · FIPS 22047

Iberville Parish, LA ZIP Codes

Iberville Parish, Louisiana has 9 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 8 residential and 1 for PO boxes or a single organization. 2 of the residential ones extend into a neighboring county. Median household income ranges from $55,352 in 70764 (Plaquemine) to $96,843 in 70776 (Saint Gabriel) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Iberville Parish?

70721 · Carville: <$2,50070740 · Grosse Tete: $57k70757 · Maringouin: $52k70764 · Plaquemine: $55k70772 · Rosedale: –70776 · Saint Gabriel: $97k70780 · Sunshine: $89k70788 · White Castle: $33k707647075770788707407077670780707727072170721 · Carville: <$2,50070740 · Grosse Tete: $57k70757 · Maringouin: $52k70764 · Plaquemine: $55k70772 · Rosedale: –70776 · Saint Gabriel: $97k70780 · Sunshine: $89k70788 · White Castle: $33k707647075770788707407077670780707727072170721 · Carville: <$2,50070740 · Grosse Tete: $57k70757 · Maringouin: $52k70764 · Plaquemine: $55k70772 · Rosedale: –70776 · Saint Gabriel: $97k70780 · Sunshine: $89k70788 · White Castle: $33k7076470757707887074070776707807077270721
The residential ZIP codes of Iberville Parish (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$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 its ZIP codes?

They carry 8 postal town names: Plaquemine, Saint Gabriel, White Castle, Maringouin, Rosedale, Grosse Tete, Sunshine, Carville.

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

All 8 residential ZIP codes in Iberville Parish

Residential ZIP codes mainly in Iberville Parish, largest first; "In this county" is the share of the ZIP's land in the county
In this county
70764 Plaquemine 14,757 78 $55k $164k 95%
70776 Saint Gabriel 7,100 203 $97k $392k 100%
70788 White Castle 3,830 34 $33k $138k 100%
70757 Maringouin 2,356 22 $52k $162k 82%
70772 Rosedale 1,020 68 – $122k 100%
70740 Grosse Tete 975 11 $57k $124k 100%
70780 Sunshine 487 38 $89k $254k 100%
70721 Carville 447 125 <$2,500 $209k 100%

Download the 9 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

2 ZIP codes of Iberville Parish extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Iberville Parish and in the neighboring counties
ZIPIn IbervilleElsewhere
7076495%West Baton Rouge Parish 5%
7075782%Pointe Coupee Parish 18%

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

PO Box and single-organization ZIP codes

ZIP codes in Iberville Parish without a residential area (GeoNames postal codes)
ZIPPostal name
70765Plaquemine

Source: GeoNames postal codes (CC BY 4.0).

Which first three digits do Iberville Parish'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 Iberville Parish starts with 707.

Three-digit prefixes of Iberville Parish'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 Iberville Parish's
PrefixSectional centerHereAll codes
707 Baton Rouge, LA (SCF 707) 9 67

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