27577 ZIP Code — Smithfield, NC

Johnston County, North Carolina

ZIP code 27577 is located in Smithfield, North Carolina, within Johnston County. It covers approximately 103.72 square miles and serves a population of 26,778 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 919/984.

About ZIP code 27577

The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character. Median home value is $218,600. Owner-occupancy sits near the national average at 67%.

Median household income is $57,281. Poverty affects 20% of residents, above the national average. SNAP benefit usage at 19% of households reflects economic stress in the area. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 29 minutes is near the national average.

Educational attainment is near the national average, with 22% of residents holding a bachelor's degree or higher.

Overall, ZIP code 27577 reflects a community defined by economic challenges above the national average, a significant Social Security-dependent population, and elevated reliance on food assistance.

26,778

population

103.72

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

27577 ZIP code map

Cities in ZIP code 27577

Below are the cities the US Postal Service accepts for ZIP code 27577. Using any city not on this list may result in mail delivery delays.

City	Status
Smithfield	Preferred

Nearby ZIP codes

27524 Four Oaks (4.5 mi) 27576 Selma (9.2 mi) 27504 Benson (9.5 mi) 27569 Princeton (10.9 mi) 27520 Clayton (11.1 mi) 27527 Clayton (11.2 mi) 27528 Clayton (13.3 mi) 27542 Kenly (14.4 mi) 27530 Goldsboro (15.5 mi) 28366 Newton Grove (16.4 mi) 27529 Garner (17.1 mi) 28334 Dunn (17.8 mi)

Demographics updated 05/2026

Population
Total population	26,778
Population density	258 / sq mi
State FIPS	37
County FIPS	101

Geography
Land area	103.72 sq mi
Water area	0.50 sq mi
Latitude	35.4808
Longitude	-78.3491
Timezone	Eastern (ET)
Area code	919/984

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.2%	42.4%	44.4%
$50k – $100k	28.7%	31.1%	30.6%
$100k – $200k	15.4%	21.8%	19.1%
Over $200k	2.7%	4.6%	6.0%

Demographics & statistics

26,778

Population

258

People per sq mi

40.3

Median age

$57,281

Median household income

$28,126

Per capita income

$218,600

Median home value

$791

Median monthly rent

67.3%

Home ownership

19.7%

Poverty rate

7.4%

Unemployment

7,378

Housing units

22.0%

Bachelor's or higher

Age distribution

Male Female

734

Under 5

680

840

5–9

778

1,184

10–14

1,097

859

15–19

796

811

20–24

752

1,510

25–34

1,399

1,997

35–44

1,851

2,044

45–54

1,894

849

55–59

786

976

60–64

905

1,327

65–74

1,230

589

75–84

545

179

85+

166

← Male

Female →

Age summary

Group	Count	%
Under 18	6,384	23.8%
18 and over	20,394	76.2%
65 and over	4,036	15.1%
Median age	40.3 years

Race & ethnicity

White 57.2%

Black or African American 18.4%

Hispanic or Latino 10%

Other race 7.4%

Two or more races 5.6%

Asian 1%

American Indian / Alaska Native 0.4%

Group	Count	%
White	17,028	57.2%
Black or African American	5,466	18.4%
Hispanic or Latino	2,984	10%
Other race	2,210	7.4%
Two or more races	1,674	5.6%
Asian	292	1%
American Indian / Alaska Native	108	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	53.2%	42.4%	44.4%
$50k – $100k	28.7%	31.1%	30.6%
$100k – $200k	15.4%	21.8%	19.1%
Over $200k	2.7%	4.6%	6.0%

Under $10k 8.7%

$10k–$15k 8.0%

$15k–$25k 8.5%

$25k–$35k 8.1%

$35k–$50k 9.8%

$50k–$75k 18.8%

$75k–$100k 10.3%

$100k–$150k 16.2%

$150k–$200k 7.4%

$200k+ 4.0%

Range	% of households
Under $10k	8.7%
$10k–$15k	8.0%
$15k–$25k	8.5%
$25k–$35k	8.1%
$35k–$50k	9.8%
$50k–$75k	18.8%
$75k–$100k	10.3%
$100k–$150k	16.2%
$150k–$200k	7.4%
$200k+	4.0%
Median income	$57,281

Housing

Home values

Under $50k 3.4%

$50k–$100k 8.5%

$100k–$150k 12.8%

$150k–$200k 17.4%

$200k–$300k 39.9%

$300k–$500k 16.0%

$500k–$1M 2.0%

Housing overview

Metric	Value
Median home value	$218,600
Median rent / month	$791
Owner occupied	67.3%
Renter occupied	32.7%
Vacant	9.1%
Single-family detached	68.8%
Large apartment buildings	5.9%
Mobile homes	12.4%
Median rooms	5.5
Avg household size (owned)	2.75

Year built

Era	%
2020 or later	0.7%
2010–2019	12.4%
2000–2009	15.8%
1990–1999	13.7%
1980–1989	11.3%
1970–1979	15.8%
1960–1969	9.9%
1950–1959	9.7%
1940–1949	4.7%
1939 or earlier	6.0%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	10.1%
2 bedrooms	18.6%
3 bedrooms	52.0%
4 bedrooms	16.1%
5+ bedrooms	1.3%

Vehicles per household

Vehicles	% of households
No vehicle	8.2%
1 vehicle	30.7%
2 vehicles	32.9%
3 or more	28.2%

Heating fuel

Fuel type	%
Utility gas	13.2%
Electricity	75.3%
Propane / LP gas	9.6%
Fuel oil	1.2%
Wood	0.2%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	4,785	50.1%
Cohabiting couple	665	7.0%
Male householder, no spouse	1,637	17.1%
Female householder, no spouse	2,459	25.8%
Households with children under 18	3,188	33.4%
Households with seniors (65+)	2,752	28.8%
Average household size	2.67

Marital status

Status	Male	Female
Never married	37.9%	26.7%
Married	46.1%	48.5%
Separated	2.3%	4.1%
Widowed	2.6%	9.8%
Divorced	11.1%	10.8%

Education

Less than 9th grade 8.9%

Some HS, no diploma 8.9%

HS graduate 29.1%

Some college, no degree 20.8%

Associate's degree 10.3%

Bachelor's degree 15.6%

Graduate / professional 6.4%

Metric	%
HS diploma or higher	82.1%
Bachelor's or higher	22.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	229	3.5%
Kindergarten	375	5.7%
Elementary school	3,126	47.8%
High school	1,644	25.1%
College / grad school	1,163	17.8%

Employment

Industry of employment

Education & healthcare 19.7%

Professional & management 13.5%

Construction 12.6%

Retail trade 11.5%

Manufacturing 11.4%

Arts, food & hospitality 10.2%

Other services 6.0%

Wholesale trade 3.3%

Finance & real estate 3.1%

Public administration 2.7%

Transportation & utilities 2.6%

Information 1.7%

Agriculture & mining 1.6%

Occupation

Category	%
Management, business & arts	33.8%
Service	17.0%
Sales & office	19.3%
Natural resources & construction	16.5%
Production & transportation	13.4%

Employment type

Type	%
Private sector	80.9%
Government	14.2%
Self-employed	4.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.7%
Carpool	11.0%
Public transit	0.2%
Walk	1.8%
Work from home	5.0%
Other means	0.3%
Avg commute (minutes)	28.8

Poverty

All people 19.7%

Under 18 years 23.3%

18 and over 18.6%

Married-couple families 8.6%

Female-led households 26.7%

Income support

Source	% of households
Social Security	34.2%
Retirement income	27.5%
Supplemental Security	7.1%
Cash public assistance	1.2%
Food stamps / SNAP	18.8%

Health indicators

Condition	%
Obesity	36.5%
High blood pressure	37.2%
High cholesterol	34.3%
Diabetes	12.4%
Heart disease	7.2%
Stroke	3.8%
Asthma	9.4%
Arthritis	25.6%
Kidney disease	3.4%
Pulmonary disease	7.7%
Cancer	6.4%

Behavior / access	%
Smoking	19.7%
Binge drinking	14.8%
No physical activity	26.5%
Less than 7 hrs sleep	34.4%
Depression	22.3%
Fair or poor health	16.8%
Poor mental health	14.5%
Poor physical health	11.7%
No health insurance	21.8%
Visited doctor (checkup)	78.4%
Visited dentist	61.2%
Cholesterol screening	88.9%
Teeth loss	18.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,860	9.1%

Disability	%
Any disability	16.7%
Under 18	5.4%
18–64 years	15.1%
65 and over	43.2%

Health insurance coverage

Type	%
Private insurance	59.3%
Public insurance	38.8%
No insurance	14.9%
Uninsured under 19	6.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	25,364	94.7%
Spanish	2,068	8.2%
Other Indo-European	1,981	7.8%
Asian & Pacific Islander	0	0.0%
Other languages	70	0.3%

Place of birth & citizenship

Origin	Count	%
Native born (US)	23,995	89.6%
Born in same state	23,640	88.3%
Born in different state	17,555	65.6%
Foreign born	355	1.3%
Naturalized citizen	2,783	10.4%
Not a US citizen	498	17.9%

Ancestry

Ancestry	Count	%
French	3,526	13.2%
Arab	3,056	11.4%
Italian	1,970	7.4%
Dutch	136	0.5%

Ancestry	Count	%
German	45	0.2%
English	43	0.2%
Irish	41	0.2%
Polish	34	0.1%

Technology access

Metric	% of households
Computer access	35.6%
Internet access	93.1%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 27577

What city is ZIP code 27577 in?

ZIP code 27577 is primarily assigned to Smithfield, North Carolina.

What county is ZIP code 27577 in?

ZIP code 27577 falls within Johnston County, North Carolina.

What is the poverty rate in ZIP code 27577?

20% of residents in ZIP code 27577 live below the poverty line, above the national average.

Does ZIP code 27577 have a large veteran population?

9% of civilians in ZIP code 27577 are veterans, above the national average of ~7%.

What is the population of ZIP code 27577?

ZIP code 27577 has an estimated population of 26,778 residents, with a density of 258 people per square mile.

What is the median household income in ZIP code 27577?

The median household income in ZIP code 27577 is $57,281, below the national median of ~$75,000.

What timezone is ZIP code 27577 in?

ZIP code 27577 observes the EST timezone.