15478 ZIP Code — Smithfield, PA

Fayette County, Pennsylvania

ZIP code 15478 is located in Smithfield, Pennsylvania, within Fayette County. It covers approximately 62.18 square miles and serves a population of 6,125 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 724.

About ZIP code 15478

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $141,200. Owner-occupancy is high at 81%, well above the national average.

The gap between median ($71,721) and mean household income suggests income inequality — a small number of higher earners pull the average up. SNAP benefit usage at 19% of households reflects economic stress in the area. 39% 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 28 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Health indicators show elevated rates of smoking (24%) compared to national benchmarks.

Overall, ZIP code 15478 reflects a community defined by a trades-oriented workforce, high homeownership, a significant Social Security-dependent population, and elevated reliance on food assistance.

6,125

population

62.18

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

15478 ZIP code map

Cities in ZIP code 15478

Below are the cities the US Postal Service accepts for ZIP code 15478. Using any city not on this list may result in mail delivery delays.

City	Status
Smithfield	Preferred

Nearby ZIP codes

15436 Fairchance (4.6 mi) 15461 Masontown (5.2 mi) 15474 Point Marion (5.3 mi) 15458 Mc Clellandtown (7.4 mi) 15401 Uniontown (7.4 mi) 15338 Greensboro (8.6 mi) 15327 Dilliner (9.2 mi) 15445 Hopwood (9.8 mi) 15334 Garards Fort (9.8 mi) 15468 New Salem (10.6 mi) 15437 Farmington (10.7 mi) 15440 Gibbon Glade (11.1 mi)

Demographics updated 05/2026

Population
Total population	6,125
Population density	99 / sq mi
State FIPS	42
County FIPS	051

Geography
Land area	62.18 sq mi
Water area	0.01 sq mi
Latitude	39.7931
Longitude	-79.8092
Timezone	Eastern (ET)
Area code	724

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	45.7%	50.2%	39.8%
$50k – $100k	25.4%	30.3%	30.8%
$100k – $200k	26.9%	17.0%	22.4%
Over $200k	2.0%	2.4%	7.1%

Demographics & statistics

6,125

Population

People per sq mi

46.1

Median age

$71,721

Median household income

$39,205

Per capita income

$141,200

Median home value

$744

Median monthly rent

81.3%

Home ownership

8.3%

Poverty rate

7.0%

Unemployment

2,317

Housing units

13.5%

Bachelor's or higher

Age distribution

Male Female

111

Under 5

108

116

5–9

113

199

10–14

194

133

15–19

129

235

20–24

229

307

25–34

299

417

35–44

405

517

45–54

502

214

55–59

208

226

60–64

220

470

65–74

456

139

75–84

135

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,014	16.6%
18 and over	5,111	83.4%
65 and over	1,243	20.3%
Median age	46.1 years

Race & ethnicity

White 93.9%

Two or more races 4.4%

Hispanic or Latino 0.8%

Black or African American 0.6%

Asian 0.2%

Group	Count	%
White	5,799	93.9%
Two or more races	272	4.4%
Hispanic or Latino	50	0.8%
Black or African American	37	0.6%
Asian	14	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	45.7%	50.2%	39.8%
$50k – $100k	25.4%	30.3%	30.8%
$100k – $200k	26.9%	17.0%	22.4%
Over $200k	2.0%	2.4%	7.1%

Under $10k 3.3%

$10k–$15k 4.8%

$15k–$25k 4.2%

$25k–$35k 10.3%

$35k–$50k 13.5%

$50k–$75k 15.5%

$75k–$100k 9.2%

$100k–$150k 19.2%

$150k–$200k 12.4%

$200k+ 7.6%

Range	% of households
Under $10k	3.3%
$10k–$15k	4.8%
$15k–$25k	4.2%
$25k–$35k	10.3%
$35k–$50k	13.5%
$50k–$75k	15.5%
$75k–$100k	9.2%
$100k–$150k	19.2%
$150k–$200k	12.4%
$200k+	7.6%
Median income	$71,721

Housing

Home values

Under $50k 11.8%

$50k–$100k 23.3%

$100k–$150k 17.1%

$150k–$200k 13.5%

$200k–$300k 20.2%

$300k–$500k 5.1%

$500k–$1M 7.3%

$1M+ 1.7%

Housing overview

Metric	Value
Median home value	$141,200
Median rent / month	$744
Owner occupied	81.3%
Renter occupied	18.7%
Vacant	7.6%
Single-family detached	75.6%
Large apartment buildings	0.0%
Mobile homes	19.9%
Median rooms	5.9
Avg household size (owned)	2.38

Year built

Era	%
2020 or later	0.0%
2010–2019	1.7%
2000–2009	8.5%
1990–1999	10.6%
1980–1989	11.0%
1970–1979	14.1%
1960–1969	4.7%
1950–1959	12.1%
1940–1949	13.1%
1939 or earlier	24.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	4.0%
2 bedrooms	31.1%
3 bedrooms	48.4%
4 bedrooms	14.5%
5+ bedrooms	1.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.2%
1 vehicle	22.9%
2 vehicles	41.3%
3 or more	33.6%

Heating fuel

Fuel type	%
Utility gas	23.4%
Electricity	27.7%
Propane / LP gas	9.2%
Fuel oil	33.6%
Wood	2.7%

Households & families

Household type	Count	%
Married-couple family	1,376	53.2%
Cohabiting couple	240	9.3%
Male householder, no spouse	486	18.8%
Female householder, no spouse	486	18.8%
Households with children under 18	688	26.6%
Households with seniors (65+)	868	33.5%
Average household size	2.37

Marital status

Status	Male	Female
Never married	34.9%	25.7%
Married	50.2%	54.1%
Separated	1.1%	1.8%
Widowed	2.0%	10.6%
Divorced	11.9%	7.8%

Education

Less than 9th grade 1.7%

Some HS, no diploma 8.4%

HS graduate 53.4%

Some college, no degree 13.8%

Associate's degree 9.2%

Bachelor's degree 9.7%

Graduate / professional 3.8%

Metric	%
HS diploma or higher	89.9%
Bachelor's or higher	13.5%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	41	3.9%
Kindergarten	71	6.7%
Elementary school	479	45.3%
High school	256	24.2%
College / grad school	211	19.9%

Employment

Industry of employment

Education & healthcare 24.5%

Retail trade 12.3%

Construction 11.3%

Manufacturing 10.0%

Public administration 8.7%

Transportation & utilities 7.5%

Agriculture & mining 6.9%

Arts, food & hospitality 6.7%

Professional & management 4.8%

Wholesale trade 2.6%

Other services 2.6%

Finance & real estate 2.3%

Occupation

Category	%
Management, business & arts	27.9%
Service	20.4%
Sales & office	21.3%
Natural resources & construction	14.5%
Production & transportation	15.7%

Employment type

Type	%
Private sector	84.1%
Government	14.1%
Self-employed	1.6%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	85.0%
Carpool	9.5%
Public transit	1.3%
Walk	0.5%
Work from home	3.0%
Other means	0.7%
Avg commute (minutes)	28.4

Poverty

All people 8.3%

Under 18 years 12.8%

18 and over 7.5%

Married-couple families 4.0%

Female-led households 14.1%

Income support

Source	% of households
Social Security	38.7%
Retirement income	26.0%
Supplemental Security	7.8%
Cash public assistance	3.0%
Food stamps / SNAP	19.0%

Health indicators

Condition	%
Obesity	35.2%
High blood pressure	33.2%
High cholesterol	32.9%
Diabetes	11.4%
Heart disease	7.6%
Stroke	3.5%
Asthma	10.4%
Arthritis	29.3%
Kidney disease	3.2%
Pulmonary disease	9.4%
Cancer	6.9%

Behavior / access	%
Smoking	24.2%
Binge drinking	19.1%
No physical activity	26.8%
Less than 7 hrs sleep	38.2%
Depression	23.2%
Fair or poor health	16.9%
Poor mental health	16.7%
Poor physical health	12.4%
No health insurance	11.3%
Visited doctor (checkup)	78.1%
Visited dentist	60.3%
Cholesterol screening	88.3%
Teeth loss	18.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	273	5.3%

Disability	%
Any disability	21.6%
Under 18	2.7%
18–64 years	18.1%
65 and over	47.8%

Health insurance coverage

Type	%
Private insurance	72.7%
Public insurance	39.9%
No insurance	2.5%
Uninsured under 19	1.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	5,906	96.4%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	6,107	99.7%
Born in same state	6,086	99.4%
Born in different state	4,548	74.3%
Foreign born	21	0.3%
Naturalized citizen	18	0.3%
Not a US citizen	16	88.9%

Ancestry

Ancestry	Count	%
Italian	911	14.9%
French	652	10.6%
Arab	448	7.3%

Ancestry	Count	%
English	59	1%
Irish	55	0.9%

Technology access

Metric	% of households
Computer access	42.3%
Internet access	92.7%

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

Frequently asked questions about ZIP code 15478

What city is ZIP code 15478 in?

ZIP code 15478 is primarily assigned to Smithfield, Pennsylvania.

What county is ZIP code 15478 in?

ZIP code 15478 falls within Fayette County, Pennsylvania.

How educated is the population of ZIP code 15478?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 15478 mostly owner-occupied?

81% of occupied units in ZIP code 15478 are owner-occupied, well above the national average.

Does ZIP code 15478 have a large retiree population?

39% of households in ZIP code 15478 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 15478?

The median home value in ZIP code 15478 is $141,200.

What timezone is ZIP code 15478 in?

ZIP code 15478 observes the EST timezone.