Residential delivery area · Louisiana
ZIP Code 70346: Donaldsonville, LA
ZIP code 70346 uses the postal name Donaldsonville, Louisiana and lies mostly in Ascension Parish (79% of its land) with the rest in Assumption Parish (Census 2020 ZIP-county file). About 9,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $35,280 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Donaldsonville (6%) and Lemannville (1%), and 2% in smaller places; 91% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Donaldsonville · its only residential ZIP
- County
- Ascension Parish (79%); Assumption Parish (21%)
- Census places
- Donaldsonville (6%); Lemannville (1%) census-designated place
- Metro area
- Baton Rouge, LA
- House district
- LA-2 119th Congress
- State
- Louisiana
- Time zone
- Central
- Land area
- 64.9 sq mi · 153 people per sq mi
Where is ZIP code 70346?
70346 centers on 30.106°, -91.018° and covers 64.9 square miles of land plus 4.9 of water. It borders 6 ZIP codes: 70725, 70341, 70734, 70788, 70086, 70723.
The map draws ZIP code areas only. For the streets inside 70346, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 70346 compare with the rest of Ascension Parish?
| Measure | 70346 | In Ascension Parish | In LA |
|---|---|---|---|
| People (ACS 2020-2024) | 9,927 | 4th of 7 | 150th of 539 |
| Median household income | $35k | not ranked | not ranked |
| Median home value | $177k | 6th of 6 | 150th of 285 |
70346's median household income is not ranked: its 90% margin of error (±$14,193) is more than a quarter of the figure ($35,280). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 59% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 70346?
The 2020 Census counted 10,342 people in 70346; the ACS, which samples households over 2020-2024, estimates 9,927. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 9,927
- 2020 Census count
- 10,342
- Households
- 3,680
- Median age
- 35.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 70346?
Of the 9,927 people the ACS estimates in 70346, 26.2% are under 18 and 19.6% are 65 or older. The largest group by race and Hispanic origin is Black (not Hispanic) (70.8%), then White (not Hispanic) (23.1%).
- Under 1826.2%
- 18 to 6454.2%
- 65 and older19.6%
- Black, not Hispanic70.8%
- White, not Hispanic23.1%
- Hispanic or Latino4.7%
- Other or two or more1.2%
- Asian, not Hispanic0.2%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 70346 earn?
Median household income is $35,280 (ACS 2020-2024).
- Median household income
- $35,280±$14,193
- Income per person
- $22,826
- Below the poverty line
- 35.3%
- Unemployed (of the labor force)
- 11.2%
- Adults 25+ with a bachelor's degree
- 11.6%
- Adjusted gross income per tax return, 2022
- $56,4644,200 returns; wages 66% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 70346?
FHFA's house price index for 70346, built from repeat sales and appraisals of the same homes, rose 59% from 2015 to 2025 and rose 45% from 2020 to 2025, and moved +6.8% in 2025.
- Median home value (owners' estimate)
- $176,900
- Median gross rent
- $856
- Homes owned by their occupants
- 55.4%
- Housing units
- 4,400
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 70346?
178 business establishments had a location in this ZIP code in 2023, 18 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade43
- Health care and social assistance22
- Accommodation and food services22
- Professional, scientific, and technical services20
- Finance and insurance16
- Other services (except public administration)15
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 70346?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 70725 | Darrow | 943 | – | 3.1 mi |
| 70341 | Belle Rose | 3,690 | $35k | 6.7 mi |
| 70734 | Geismar | 9,213 | $129k | 7.1 mi |
| 70788 | White Castle | 3,830 | $33k | 10.1 mi |
| 70086 | Saint James | 1,793 | $36k | 10.3 mi |
| 70723 | Convent | 1,189 | $47k | 11.1 mi |
| 70393 | Plattenville | 117 | $19k | 7.7 mi (near) |
| 70391 | Paincourtville | 0 | – | 8.1 mi (near) |
| 70721 | Carville | 447 | <$2,500 | 8.9 mi (near) |
| 70737 | Gonzales | 49,084 | $83k | 10.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.