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zipcodes.pro — CITY/LA/GEISMAR

Geismar ZIP code, Louisiana

The ZIP code for Geismar, LA is 70734, and its area code is 225.

USPS city name
1 ZIP code
Population
9,213
Area code
225

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

Geismar in numbers

About 9,213 people live in Geismar, in 2,857 households. The median household income is $128,975 a year, 2.1 times the Louisiana median of $60,756 (US: $80,734). The median owner-occupied home is valued at $344,100 (59% above the Louisiana median).

Population9,213Geismar9,213
Households2,857Geismar2,857
Median household income$128,975Geismar$128,975Louisiana$60,756US $80,734
Median home value$344,100Geismar$344,100Louisiana$216,500US $332,700

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the ZIP code addressed as Geismar. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Geismar

ZIP codes with the USPS city name Geismar
ZIP City Type Population Median income Median home
70734 Geismar , LA Standard 9,213 $128,975 $344,100

Map of Geismar ZIP codes

70734

The ZIP codes of Geismar, 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 Geismar

The nearest larger towns are Gonzales (13,108 people, 4.5 mi), Prairieville (35,238 people, 7.7 mi) and Gardere (12,223 people, 13 mi).

Towns near Geismar
TownPopulationDistance
Gonzales 13,108 4.5 mi
St. Gabriel 6,639 7.0 mi
Donaldsonville 6,831 7.7 mi
Prairieville 35,238 7.7 mi
Village St. George 8,273 11.4 mi
Old Jefferson 7,860 11.8 mi
Oak Hills Place 9,038 12.6 mi
Gardere 12,223 13.3 mi
Shenandoah 17,998 13.6 mi
Inniswold 6,357 14.0 mi
Westminster 2,559 15.0 mi
Plaquemine 6,075 15.7 mi
Baton Rouge 222,771 18.1 mi
Denham Springs 9,323 18.6 mi

More nearby: every ZIP code in Ascension Parish · Louisiana ZIP codes

Cite this page

zipcodes.pro. “Geismar, LA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/la/geismar

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