15143 ZIP Code — Sewickley, PA

Allegheny County, Pennsylvania

ZIP code 15143 is located in Sewickley, Pennsylvania, within Allegheny County. It covers approximately 36.91 square miles and serves a population of 22,124 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 412.

About ZIP code 15143

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 $416,400. Owner-occupancy is high at 79%, well above the national average.

The gap between median ($119,732) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average. 37% 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 25 minutes is near the national average.

Educational attainment is high — 60% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 15143 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

22,124

population

36.91

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

15143 ZIP code map

Cities in ZIP code 15143

Below are the cities the US Postal Service accepts for ZIP code 15143. Using any city not on this list may result in mail delivery delays.

City	Status
Sewickley	Acceptable
Sewickley	Preferred

Nearby ZIP codes

15056 Leetsdale (3.5 mi) 15003 Ambridge (3.7 mi) 15046 Crescent (4.5 mi) 15005 Baden (4.5 mi) 15090 Wexford (5 mi) 15225 Pittsburgh (5.3 mi) 15108 Coraopolis (5.3 mi) 15015 Bradfordwoods (5.3 mi) 15237 Pittsburgh (5.6 mi) 15202 Pittsburgh (6.1 mi) 15229 Pittsburgh (7.2 mi) 15136 Mc Kees Rocks (7.6 mi)

Demographics updated 05/2026

Population
Total population	22,124
Population density	599 / sq mi
State FIPS	42
County FIPS	003

Geography
Land area	36.91 sq mi
Water area	0.68 sq mi
Latitude	40.5772
Longitude	-80.1484
Timezone	Eastern (ET)
Area code	412

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.2%	40.9%	39.8%
$50k – $100k	26.1%	29.6%	30.8%
$100k – $200k	26.9%	22.0%	22.4%
Over $200k	23.8%	7.4%	7.1%

Demographics & statistics

22,124

Population

599

People per sq mi

47.2

Median age

$119,732

Median household income

$74,599

Per capita income

$416,400

Median home value

$1,457

Median monthly rent

78.9%

Home ownership

3.8%

Poverty rate

4.4%

Unemployment

7,565

Housing units

59.7%

Bachelor's or higher

Age distribution

Male Female

566

Under 5

606

600

5–9

644

856

10–14

917

577

15–19

619

432

20–24

462

808

25–34

866

1,248

35–44

1,338

1,666

45–54

1,786

743

55–59

796

659

60–64

707

1,085

65–74

1,162

884

75–84

947

555

85+

595

← Male

Female →

Age summary

Group	Count	%
Under 18	5,057	22.9%
18 and over	17,067	77.1%
65 and over	5,228	23.6%
Median age	47.2 years

Race & ethnicity

White 82.1%

Asian 7.9%

Black or African American 3.8%

Two or more races 3.7%

Hispanic or Latino 2%

Other race 0.4%

Group	Count	%
White	18,536	82.1%
Asian	1,780	7.9%
Black or African American	864	3.8%
Two or more races	839	3.7%
Hispanic or Latino	444	2%
Other race	98	0.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	23.2%	40.9%	39.8%
$50k – $100k	26.1%	29.6%	30.8%
$100k – $200k	26.9%	22.0%	22.4%
Over $200k	23.8%	7.4%	7.1%

Under $10k 1.5%

$10k–$15k 0.9%

$15k–$25k 5.1%

$25k–$35k 6.3%

$35k–$50k 7.6%

$50k–$75k 11.4%

$75k–$100k 11.5%

$100k–$150k 15.1%

$150k–$200k 11.2%

$200k+ 29.5%

Range	% of households
Under $10k	1.5%
$10k–$15k	0.9%
$15k–$25k	5.1%
$25k–$35k	6.3%
$35k–$50k	7.6%
$50k–$75k	11.4%
$75k–$100k	11.5%
$100k–$150k	15.1%
$150k–$200k	11.2%
$200k+	29.5%
Median income	$119,732

Housing

Home values

Under $50k 2.1%

$50k–$100k 2.3%

$100k–$150k 3.3%

$150k–$200k 7.5%

$200k–$300k 17.5%

$300k–$500k 30.4%

$500k–$1M 28.9%

$1M+ 7.9%

Housing overview

Metric	Value
Median home value	$416,400
Median rent / month	$1,457
Owner occupied	78.9%
Renter occupied	21.1%
Vacant	8.0%
Single-family detached	71.2%
Large apartment buildings	8.6%
Mobile homes	1.5%
Median rooms	6.8
Avg household size (owned)	2.65

Year built

Era	%
2020 or later	0.5%
2010–2019	10.6%
2000–2009	13.5%
1990–1999	9.7%
1980–1989	8.4%
1970–1979	8.9%
1960–1969	10.0%
1950–1959	10.3%
1940–1949	5.1%
1939 or earlier	22.9%

Bedrooms

Size	% of units
No bedroom (studio)	1.8%
1 bedroom	6.5%
2 bedrooms	20.1%
3 bedrooms	34.3%
4 bedrooms	25.8%
5+ bedrooms	11.5%

Vehicles per household

Vehicles	% of households
No vehicle	8.6%
1 vehicle	27.3%
2 vehicles	44.8%
3 or more	19.3%

Heating fuel

Fuel type	%
Utility gas	81.3%
Electricity	13.7%
Propane / LP gas	1.5%
Fuel oil	2.6%
Wood	0.3%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	5,462	63.2%
Cohabiting couple	280	3.2%
Male householder, no spouse	1,017	11.8%
Female householder, no spouse	1,880	21.8%
Households with children under 18	2,867	33.2%
Households with seniors (65+)	3,310	38.3%
Average household size	2.50

Marital status

Status	Male	Female
Never married	22.7%	18.5%
Married	66.5%	61.8%
Separated	0.2%	1.1%
Widowed	3.8%	10.4%
Divorced	6.9%	8.1%

Education

Less than 9th grade 1.6%

Some HS, no diploma 2.0%

HS graduate 15.5%

Some college, no degree 11.4%

Associate's degree 9.7%

Bachelor's degree 28.8%

Graduate / professional 30.8%

Metric	%
HS diploma or higher	96.4%
Bachelor's or higher	59.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	357	6.7%
Kindergarten	230	4.3%
Elementary school	2,499	47.1%
High school	1,192	22.5%
College / grad school	1,023	19.3%

Employment

Industry of employment

Education & healthcare 23.4%

Professional & management 16.5%

Finance & real estate 11.5%

Manufacturing 10.4%

Retail trade 9.4%

Arts, food & hospitality 6.5%

Other services 5.5%

Construction 4.5%

Transportation & utilities 4.5%

Information 2.6%

Wholesale trade 2.4%

Public administration 2.0%

Agriculture & mining 0.9%

Occupation

Category	%
Management, business & arts	62.3%
Service	9.2%
Sales & office	18.1%
Natural resources & construction	3.7%
Production & transportation	6.7%

Employment type

Type	%
Private sector	86.4%
Government	7.8%
Self-employed	5.6%
Unpaid family workers	0.2%

Commute

Method	%
Drive alone	69.9%
Carpool	6.4%
Public transit	1.7%
Walk	2.3%
Work from home	18.9%
Other means	0.9%
Avg commute (minutes)	25.3

Poverty

All people 3.8%

Under 18 years 2.1%

18 and over 4.3%

Married-couple families 0.9%

Female-led households 13.3%

Income support

Source	% of households
Social Security	36.8%
Retirement income	30.1%
Supplemental Security	2.4%
Cash public assistance	0.7%
Food stamps / SNAP	3.0%

Health indicators

Condition	%
Obesity	28.5%
High blood pressure	30.4%
High cholesterol	32.3%
Diabetes	8.7%
Heart disease	6.2%
Stroke	2.5%
Asthma	8.8%
Arthritis	27.4%
Kidney disease	2.6%
Pulmonary disease	5.2%
Cancer	8.3%

Behavior / access	%
Smoking	10.9%
Binge drinking	18.7%
No physical activity	17.1%
Less than 7 hrs sleep	30.6%
Depression	20.0%
Fair or poor health	9.3%
Poor mental health	12.0%
Poor physical health	7.8%
No health insurance	5.9%
Visited doctor (checkup)	79.3%
Visited dentist	76.4%
Cholesterol screening	93.9%
Teeth loss	8.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,228	7.2%

Disability	%
Any disability	12.0%
Under 18	2.0%
18–64 years	7.5%
65 and over	32.8%

Health insurance coverage

Type	%
Private insurance	86.5%
Public insurance	28.5%
No insurance	2.7%
Uninsured under 19	4.8%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,952	94.7%
Spanish	394	1.9%
Other Indo-European	43	0.2%
Asian & Pacific Islander	115	0.5%
Other languages	236	1.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	20,503	92.7%
Born in same state	20,252	91.5%
Born in different state	14,705	66.5%
Foreign born	251	1.1%
Naturalized citizen	1,621	7.3%
Not a US citizen	899	55.5%

Ancestry

Ancestry	Count	%
Italian	4,210	19%
French	2,679	12.1%
Arab	687	3.1%
Irish	337	1.5%
English	314	1.4%

Ancestry	Count	%
Norwegian	73	0.3%
Polish	68	0.3%
Dutch	40	0.2%
German	13	0.1%

Technology access

Metric	% of households
Computer access	39.0%
Internet access	94.1%

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

Frequently asked questions about ZIP code 15143

What city is ZIP code 15143 in?

ZIP code 15143 is primarily assigned to Sewickley, Pennsylvania.

What county is ZIP code 15143 in?

ZIP code 15143 falls within Allegheny County, Pennsylvania.

How educated is the population of ZIP code 15143?

60% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 15143 have a large retiree population?

37% of households in ZIP code 15143 receive Social Security income, suggesting a significant retiree or disability population.

What is the typical home value in ZIP code 15143?

The median home value in ZIP code 15143 is $416,400.

What is the median household income in ZIP code 15143?

The median household income in ZIP code 15143 is $119,732, above the national median of ~$75,000.

What timezone is ZIP code 15143 in?

ZIP code 15143 observes the EST timezone.