Assumption Parish, LA ZIP Codes
8 ZIP codes cover all or part of Assumption Parish, Louisiana: 70380, 70346, 70390, 70339, 70341, 70372, 70393 and 70391. The Census Bureau counts 20,484 residents in the county, with a median household income of $51,423 and a median home value of $150,300. Median household income ranges from $35,280 in 70346 to $58,667 in 70390. Its largest communities include Morgan City, Bayou Vista, Pierre Part, Bayou L'Ourse and Labadieville.
Assumption Parish (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 20,484 |
| Households | 8,830 |
| Median household income | $51,423 |
| Median home value | $150,300 |
| Median age | 42.8 |
| Median rent | $810 |
All 8 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 48,239 |
| Households (sum of ZIP codes) | 19,359 |
| Median household income, range across ZIP codes | $35,280 (70346) to $58,667 (70390) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $48,892 |
| Homeowners | 72.3% |
| Households with kids under 18 | 33.0% |
| Moved in the past year | 10.9% |
| Carrier routes in EDDM2GO's route library | 28 routes, 16,217 homes (4 of 8 ZIP codes) |
Top facts
- Highest median household income in Assumption County: 70390 ($58,667)
- Most residents: 70380 (20,529 people)
- Highest homeownership: 70339 (92.2% own their home)
- Most households with kids: 70341 (38.9% of households)
- Most new movers: 70341 (13.7% moved in last year)
- Youngest median age: 70346 (35.0 years)
- Highest median home value: 70346 ($176,900)
Every ZIP code in Assumption County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 70380 | Morgan City | 20,529 | 7,968 | $54,595 | $141,600 | 68.9% | 32.9% | 12.2% | 15 | 9,754 | 39% of its land |
| 70346 | Donaldsonville | 9,927 | 3,680 | $35,280 | $176,900 | 55.4% | 38.7% | 12.9% | 7 | 4,342 | 21% of its land |
| 70390 | Napoleonville | 7,160 | 2,869 | $58,667 | $162,900 | 79.5% | 36.3% | 9.6% | 4 | 2,316 | 100% of its land |
| 70339 | Pierre Part | 4,848 | 2,221 | $51,659 | $170,500 | 92.2% | 19.6% | 4.0% | — | — | 87% of its land |
| 70341 | Belle Rose | 3,690 | 1,589 | $35,346 | $88,500 | 82.6% | 38.9% | 13.7% | — | — | 100% of its land |
| 70372 | Labadieville | 1,968 | 973 | $40,659 | $105,200 | 79.1% | 24.7% | 3.2% | 2 | 1,005 | 100% of its land |
| 70393 | Plattenville | 117 | 59 | $19,256 | $214,900 | 100.0% | 23.7% | 0.0% | — | — | 100% of its land |
| 70391 | Paincourtville | 0 | 0 | — | — | — | — | — | — | — | 100% of its land |
A ZIP code is listed for Assumption Parish when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Morgan City — 11,064 residents · 1 ZIP code
- Bayou Vista — 3,842 residents · 1 ZIP code
- Pierre Part — 2,308 residents · 1 ZIP code
- Bayou L'Ourse — 2,132 residents · 1 ZIP code
- Labadieville — 1,408 residents · 2 ZIP codes
- Belle Rose — 1,400 residents · 2 ZIP codes
- Paincourtville — 1,008 residents · 2 ZIP codes
- Supreme — 803 residents · 1 ZIP code
- Siracusaville — 515 residents · 1 ZIP code
- Napoleonville — 511 residents · 1 ZIP code
- Bayou Corne — 183 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Assumption County — 6 ZIP codes ranked
- ZIP codes with the highest home values in Assumption County — 6 ZIP codes ranked
- ZIP codes with the highest homeownership in Assumption County — 6 ZIP codes ranked
- ZIP codes with the most families with kids in Assumption County — 6 ZIP codes ranked
- ZIP codes with the most new movers in Assumption County — 6 ZIP codes ranked
- Youngest ZIP codes in Assumption County — 6 ZIP codes ranked
- Oldest ZIP codes in Assumption County — 6 ZIP codes ranked
- Fastest-growing ZIP codes in Assumption County — 6 ZIP codes ranked
Price a mailing to Assumption County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Assumption Parish, LA?
- 70380, 70346, 70390, 70339, 70341, 70372, 70393 and 70391. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Assumption Parish?
- 20,484 residents in 8,830 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Assumption Parish?
- $51,423 for the county as a whole. Its ZIP codes range from $35,280 (70346) to $58,667 (70390).
- Which Assumption County ZIP code has the highest median household income?
- 70390, at $58,667, among ZIP codes with at least 1,000 residents. See the full ranking of Assumption County ZIP codes by income.
- How many carrier routes and mailboxes are in Assumption Parish?
- For the 4 of 8 ZIP codes in EDDM2GO's stored route library: 28 carrier routes reaching 16,217 residential and 1,198 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.