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Zip Code 70734 — Geismar, LA

70734 is a ZIP Code associated with Geismar, LA, located within Ascension. The postal region supports an estimated population of 9,213 residents across Data Pending housing units, with a population density of 128.2 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (30.208120, -91.000950)

Data Metric	Local Statistic
Postal / Zip Code	70734
Primary City	Geismar
State / Province	LA
County	Ascension
Total Population	9,213
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	128.2 people/sq mi
Timezone	America/Chicago

How 70734 Compares

Metric	ZIP 70734	Ascension County	LA State Average
Population	9,213	131,228	4,611,457
Median Income	Data Pending	N/A	N/A
Population Density	128.2 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 70737	Gonzales	4.8 mi	49,084	N/A
Zip 70725	Darrow	5.2 mi	943	N/A
Zip 70721	Carville	5.5 mi	447	N/A
Zip 70776	Saint Gabriel	6.4 mi	7,100	N/A
Zip 70346	Donaldsonville	7.0 mi	9,927	N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →