What city is 70734 in?

70734 is a Geismar, LA mailing address. None of its land lies inside a Census-defined city or community.

What is the population of 70734?

About 9,213 people (±1,293), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,384.

What is the median household income in 70734?

$128,975 (±$16,607), compared with $60,756 for Louisiana as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 70734?

5 USPS carrier routes with 3,213 residential and 239 business mailboxes (3,452 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 70734?

The closest, measured center to center: 70737 (4.5 mi, Gonzales), 70721 (5.1 mi, St. Gabriel), 70725 (5.3 mi, Darrow), 70776 (6.7 mi, St. Gabriel), 70346 (7.1 mi, Donaldsonville) and 70769 (7.7 mi, Prairieville).

70734 ZIP Code, Geismar, LA

70734 is a ZIP code in Geismar, Louisiana in Ascension Parish. It covers 28 square miles of land. The closest ZIP codes are 70737, 70721 and 70725. 9,213 people live here in 2,857 households. With about 332 people per square mile it is lightly settled, and most homes are owner-occupied (81%). Median household income is $128,975, well above the Louisiana median of $60,756; 47% of households have children under 18.

Quick facts

Mailing city: Geismar, LA
County: Ascension County
Land area: 28 sq mi
Population: 9,213
Median household income: $128,975
Carrier routes: 5 (3,213 homes)

Key figures

Measure	Value
Residents	9,213
Households	2,857
Median household income	$128,975
Income per person	$46,646
Median age	33.5
Homeowners	81.4%
Median home value	$344,100
Median rent	$850
Bachelor's degree or higher	47.5%
Average commute (minutes)	27.6
Households with kids under 18	46.9%
Moved in the past year	12.2%
Below the poverty line	5.7%
Broadband internet	95.8%
Speak a non-English language at home	8.8%

Household income

% of households	Value
<$10K	1.3%
$10–15K	2.0%
$15–25K	4.9%
$25–35K	6.7%
$35–50K	7.5%
$50–75K	5.8%
$75–100K	7.4%
$100–150K	22.3%
$150–200K	17.9%
$200K+	24.3%

Age

% of all residents	Value
<10	16.9%
10–19	14.1%
20–24	10.2%
25–34	12.0%
35–44	15.2%
45–54	15.6%
55–64	10.2%
65–74	3.0%
75+	2.7%

Tenure

% of housing units	Value
Owned, with mortgage	58.4%
Owned outright	17.8%
Rented	17.4%
Vacant	6.3%

Type of building

% of housing units	Value
Detached house	75.2%
Townhome	0.0%
2–4 units	0.2%
5–19 units	0.0%
20+ units	0.0%
Mobile / other	24.6%

Businesses in 70734

261 business establishments with 9,694 employees (ZIP Codes Business Patterns 2023).

Wholesale Trade: 39
Professional, Scientific, and Technical Services: 33
Transportation and Warehousing: 31
Construction: 26
Manufacturing: 26
Real Estate and Rental and Leasing: 25
Retail Trade: 15
Accommodation and Food Services: 15

EDDM carrier routes

70734 has 5 USPS carrier routes with 3,213 residential and 239 business mailboxes. Open the EDDM route map.

Carrier routes in 70734

70734 has 5 USPS carrier routes (5 rural (R)) with 3,213 residential and 239 business mailboxes. Routes range from 440 homes (R009) to 795 homes (R010); the median route has 676 homes. The Census counted 2,857 households in 70734 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	1
500–749	3
750–999	1
1,000–1,499	0
1,500+	0

Best routes in 70734 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route R009 — USPS business mailboxes 133, 440 homes
Route R010 — USPS business mailboxes 47, 795 homes
Route R008 — USPS business mailboxes 32, 697 homes
Route R006 — USPS business mailboxes 26, 605 homes
Route R007 — USPS business mailboxes 1, 676 homes

Select these 5 routes on the route map

Every carrier route in 70734

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R006	Rural	605	26	$177,328	—	—	—
R007	Rural	676	1	$161,340	—	—	—
R008	Rural	697	32	$117,039	—	—	—
R009	Rural	440	133	$128,059	—	—	—
R010	Rural	795	47	$117,039	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 70734 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

70737 — Gonzales city, LA (4.5 mi)
70721 — St. Gabriel city, LA (5.1 mi)
70725 — Darrow CDP, LA (5.3 mi)
70776 — St. Gabriel city, LA (6.7 mi)
70346 — Donaldsonville city, LA (7.1 mi)
70769 — Prairieville CDP, LA (7.7 mi)
70778 — Sorrento town, LA (11.1 mi)
70810 — Oak Hills Place CDP, LA (11.2 mi)

Areas that include 70734

Geismar, LA ZIP codes — 1 ZIP code
Ascension County ZIP codes — 7 ZIP codes
Louisiana ZIP code data

Where it ranks

Mail every home in 70734

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 70734, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 70734 in?: 70734 is a Geismar, LA mailing address. None of its land lies inside a Census-defined city or community.
What county is 70734 in?: 70734 is in Ascension Parish.
What is the population of 70734?: About 9,213 people (±1,293), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 8,384.
What is the median household income in 70734?: $128,975 (±$16,607), compared with $60,756 for Louisiana as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 70734?: 5 USPS carrier routes with 3,213 residential and 239 business mailboxes (3,452 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 70734?: The closest, measured center to center: 70737 (4.5 mi, Gonzales), 70721 (5.1 mi, St. Gabriel), 70725 (5.3 mi, Darrow), 70776 (6.7 mi, St. Gabriel), 70346 (7.1 mi, Donaldsonville) and 70769 (7.7 mi, Prairieville).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.