28521 ZIP Code Profile, Map, Data & Demographics

ZIP Code Type: STANDARD
County: Duplin County
Centroid: Latitude 34.828, Longitude -77.745
Time Zone: Eastern Time Zone (UTC -5 hours)
Observes DST: Yes

ZIP Code 28521 has segments in 2 Counties (Duplin, Onslow).

Businesses Addresses: 35
PO Box Addresses: 77
Residential Addresses: 948

Multi-Family Addresses: 5
Single Family Addresses: 943

The ZIP Code maps and database are updated 4 times per year.
Database updated: June 1, 2025, Maps updated: May 1, 2024.

Chinquapin, NC 28521 Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	1,585 (100%)
Population in Households	1,575 (99.4%)
Population in Families	1,295 (81.7%)
Population in Group Quarters¹	10 ( 0.6%)
Population Density	44
Diversity Index²	43


INCOME
Median Household Income	$57,185
Average Household Income	$69,234
% of Income for Mortgage⁴	19%
Per Capita Income	$31,990
Wealth Index⁵	48
Socioeconomic Status Index⁶	Moderate (48.1)

HOUSING
Total HU (Housing Units)	879 (100%)
Owner Occupied HU	595 (67.7%)
Renter Occupied HU	137 (15.6%)
Vacant Housing Units	147 (16.7%)
Median Home Value	$173,553
Average Home Value	$257,244
Housing Affordability Index³	117

HOUSEHOLDS
Total Households	732
Average Household Size	2.15
Family Households	466
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Chinquapin, NC 28521 - Peer Comparisons by Rank and Percentile

The table below compares 28521 to the other 766 ZIP Codes in North Carolina by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	0.16%	0.10%
Households	0.72%	0.51%
Families		1.46%
Median Household Income		1.87%
Per Capita Income		2.42%
Owner Occupied HU		0.73%

Variable Description	Rank	Percentile
Total Population	# 639	17th
Population Density	# 609	21st
Median Household Income	# 523	32nd
Housing Affordability Index	# 626	82nd
Per Capita Income	# 501	35th
Diversity Index	# 516	33rd

28521 ZIP Code Profile, Map, Data & Demographics

ZIP Code 28521: Basic Data & USPS Preferred City Name

Chinquapin, NC 28521 Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Chinquapin, NC 28521 - Peer Comparisons by Rank and Percentile

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