PlainZIP

Carville, LA · standard

ZIP Code 70721

Iberville County, Louisiana - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

701
53/sq mi
$2,499
Median income
$209,400
Median home value
20.0%
Bachelor's or higher

The verdict

Carville pairs one of the lowest household incomes in the country with below-median home values, in a rural, homeowner-dominated area.

0th pct
household income, US ZIPs
46th pct
home value, US ZIPs
53
people per sq mi
85%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 70721 against every reporting US ZIP.

ZIP code 70721 is a sparsely populated ZIP (a standard USPS delivery area) in Carville, Iberville County, Louisiana, home to just 701 residents across 13.2 square miles, a density of 53 people per square mile, in the Chicago time zone.

ZIP 70721 sits on the lower end of the income spectrum: median household income is $2,499 (96% below the Louisiana average), while per-capita income is $16,434. Poverty here runs at 51.0%, with unemployment measured at 32.2%. Housing costs here run $209,400 for a typical home value (18% above the state average), with rent averaging - a month; 85.1% of homes are owner-occupied.

Educational attainment sits below the national norm: 20.0% of adults hold a bachelor's degree or higher, the median age is 30.3, and the average commute is -. A geography-based comparison follows: 8 ZIP codes within about 10 miles of 70721, plus 6 more within Iberville County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 70721, Carville, LA · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

701

Population

13.2

Area (sq mi)

53

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 70721?

30.3

Median Age

53.2%

Male

46.8%

Female

0.0%

Foreign-Born

White 15.0%
African American 84.8%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.2%
Hispanic or Latino 0.2%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$2,499

Median Household Income

-96% vs state

$16,434

Per Capita Income

51.0%

Poverty Rate

32.2%

Unemployment Rate

How ZIP 70721 ranks nationally

Carville, LA household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$2,499 0th percentile higher than 0% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). This entry sits in this band. $20,000–$40,000: 1,573 US ZIPs (5%). Above this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Above this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Above this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 66.4%
Bachelor's Degree or Higher 20.0%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

168

Total Housing Units

168

Occupied Units

0

Vacant Units

2.43

Avg Household Size

Occupancy Type

Owner 85.1%
Renter 14.9%

$209,400

Median Home Value

+18% vs state

2013

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 7 business establishments in ZIP 70721, employing approximately 698 people with a combined annual payroll of $56,761,000.

7

Businesses

698

Employees

$56.8M

Annual Payroll

0

Industry Sectors

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 70721 vs 70776 →

ZIP 70721 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 70721 ranks #9 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 70721 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 70721 ranks #8 of 8 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
70776 Saint Gabriel, LA 6,043 3.1 mi
70734 Geismar, LA 7,554 5.2 mi
70810 Baton Rouge, LA 37,980 8.8 mi
70346 Donaldsonville, LA 10,925 7.5 mi
70780 Sunshine, LA 1,015 7.3 mi
70788 White Castle, LA 4,051 7.7 mi
70725 Darrow, LA 1,826 9.8 mi
70769 Prairieville, LA 36,084 10.7 mi

More ZIP Codes in Iberville County

70764 standard
Plaquemine, LA
Pop: 17,584
70776 standard
Saint Gabriel, LA
Pop: 6,043
70788 standard
White Castle, LA
Pop: 4,051
70757 standard
Maringouin, LA
Pop: 3,177
70740 standard
Grosse Tete, LA
Pop: 1,305
70780 standard
Sunshine, LA
Pop: 1,015

Related Areas

Iberville County Carville, LA Louisiana

Frequently Asked Questions

What county is ZIP code 70721 in? ▼
ZIP code 70721 (Carville) is located in Iberville County, Louisiana. Iberville County contains multiple ZIP codes, see the full list at /counties/iberville-la.
What is the population of ZIP code 70721? ▼
ZIP code 70721 in Carville, LA has a population of 701 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 70721? ▼
The median household income in ZIP 70721 is $2,499, which is 97% below the national average of $76,288.
What is the average home value in ZIP 70721? ▼
The median home value in ZIP 70721 is $209,400, which is 25% below the national average of $278,155.
What is the demographic makeup of ZIP 70721? ▼
The largest racial group in ZIP 70721 is African American at 84.8%. Hispanic or Latino residents make up 0.2% of the population.
How many businesses are in ZIP code 70721? ▼
ZIP code 70721 has 7 business establishments employing approximately 698 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 70721? ▼
In ZIP code 70721, 66.4% of residents aged 25+ have a high school diploma or higher, and 20.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 70721? ▼
In ZIP code 70721, approximately 85.1% of occupied housing units are owner-occupied and 14.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 70721? ▼
The poverty rate in ZIP code 70721 is 51.0% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.