Carnegie, PA

Borough in Allegheny County, PA, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

7,978

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

40.4

years ∙ half population younger than 40.4, half older

Diversity Index

35%

chance two random people differ in race and ethnicity

Nativity

7.8%

foreign-born population

92.2%Native

7.8% Foreign-born

Geographic Context

Location, size, and surroundings

About

Carnegie is a borough within Allegheny County, Pennsylvania, United States.

Location

Borough in Allegheny County, PA, US

Co-ordinates

DEC40.407987° N, 80.086037° W

DMS40° 24′ 28.75″ N, 80° 05′ 09.73″ W

Population Density & area

4,925/sq mi (1,900/km²)

Total Area

1.62 sq mi (4.2 km²)

Land Area

1.62 sq mi (4.2 km²) · 100%

Water Area

0 sq mi (0 km²) · 0%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

49.6% male

Male 49.6%

Female 50.4%

males per 100 females

Carnegie 98.6

Allegheny County 95.3

Pennsylvania 97.2

Nativity

7.8%

foreign-born population

92.2%Native

7.8% Foreign-born

% Foreign-born

Carnegie 7.8%

Allegheny County 6.6%

Pennsylvania 7.7%

Age Distribution

How the population is spread across age groups

Median Age

40.4

years ∙ half population younger than 40.4, half older

Carnegie

40.4

Allegheny County

40.6

Pennsylvania

40.9

Dependency ratio

61.2

dependents per 100 working-age adults

Carnegie 61.2

Allegheny County 63.3

Pennsylvania 66.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Carnegie	Allegheny County	Pennsylvania
Age Group
Children (Under 18)	16.5%	18.6%	20.4%
Working age (18-64)	62.1%	61.2%	60.1%
Senior (65+)	21.4%	20.2%	19.5%
Dependency ratio
Total dependency ratio	61.2	63.3	66.4
Child dependency ratio	26.7	30.4	34
Old-age dependency ratio	34.5	33	32.4

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

79.7%

Black

10.2%

Asian

2.7%

Hispanic

2.2%

Other

5.2%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

35%

chance two random people differ in race and ethnicity

Carnegie 35%

Allegheny County 41%

Pennsylvania 44.6%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Carnegie population

	Carnegie	Allegheny County	Pennsylvania
Hispanic or Latino	2.2%	3%	8.7%
Mexican	0.6%	1%	1.4%
Puerto Rican	1%	0.6%	3.7%
Cuban	0.1%	0.1%	0.2%
Other Hispanic / Latino	0.5%	1.3%	3.4%
Not Hispanic or Latino	97.8%	97%	91.3%
One race	92.6%	92.7%	87.7%
White	79.7%	75.5%	73%
Black or African American	10.2%	12.4%	10.3%
American Indian and Alaska Native	0%	0.1%	0.1%
Asian	2.7%	4.3%	3.8%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	0%	0.5%	0.5%
Two or more races (Multiracial)	5.2%	4.3%	3.6%

Household & Families Composition

Household size, type, and family structure

Household structure

42.9% family

Family 42.9%

Non family 57.1%

% family households

Carnegie 42.9%

Allegheny County 55.4%

Pennsylvania 62.4%

Average household size

1.89

persons per household

Carnegie

1.89

Allegheny County

2.2

Pennsylvania

2.39

Household & Family COMPOSITION

Households

Percentage of Carnegie population

	Carnegie	Allegheny County	Pennsylvania
Total households	4,217	545,802	5,274,853
Average houshold size	1.89	2.2	2.39
Family households	1,807	302,270	3,291,192
Average family size	2.82	2.92	3.01
Married couple family	1,113	225,008	2,437,812
Other families	694	77,262	853,380
Male householder	212	19,850	246,246
Female householder	482	57,412	607,134
Non-family households	2,410	243,532	1,983,661
One-person households	2,110	200,796	1,629,974
Male householder	967	90,645	733,485
Senior (65+) living alone	201	27,423	246,162
Female householder	1,143	110,151	896,489
Senior (65+) living alone	679	55,733	477,851
Other living arrangements	300	42,736	353,687

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

4,527

housing units

Carnegie 4,527

Allegheny County 606,827

Pennsylvania 5,806,452

Occupancy status

93.2% occupied

Occupied 93.2%

Vacant 6.8%

vacancy rate

Carnegie 6.8%

Allegheny County 10.1%

Pennsylvania 9.2%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

64.5%

Single family houses

64.5%

Apartments in multi-unit structures

35%

Mobile homes

0.4%

Boat, RV, van, etc

Median Year Built

1953

Half of houses were built before 1953, and half after.

Historic ∙ 1939 or earlier

32.1%

Postwar & mid-century ∙ 1940 - 1969

46.3%

Late 20th century ∙ 1970 - 1999

14.1%

Modern ∙ 2000 or later

7.4%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Carnegie	Allegheny County	Pennsylvania
Rooms per unit
Median rooms	5.4	5.9	6
1–3 rooms	16.1%	14.1%	11.7%
4–6 rooms	58.8%	48.7%	47.7%
7+ rooms	25.1%	37.3%	40.7%
Bedrooms
No bedroom / studio	2.3%	2.5%	2.3%
1 bedroom	17.9%	13.8%	10.4%
2 bedrooms	30.5%	26.2%	22.5%
3 bedrooms	41%	37.6%	42.3%
4+ bedrooms	8.2%	19.9%	22.6%
At a glance
Median year built	1953	1958	1966
Total housing units	4,527	606,827	5,806,452

Occupancy Profile

Who is inside and how they use it

Homeownership

53.5% owners

Renter-occupied 46.5%

Owner-occupied 53.5%

homeownership rate

Carnegie 53.5%

Allegheny County 65.2%

Pennsylvania 69.3%

Average household size

2.02

Owner-occupied

1.73

Renter-occupied

owner-occupied average size

Carnegie 2.02

Allegheny County 2.39

Pennsylvania 2.53

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Carnegie	Allegheny County	Pennsylvania
Total occupied units	4,217	545,802	5,274,853
Year moved in
2020 or later	22.4%	22.3%	20.2%
2010 to 2019	38.3%	36.1%	36.1%
2000 to 2009	16.4%	15.5%	17.5%
1999 or earlier	22.9%	26.2%	26.2%
Occupants per room
1.00 or fewer	97.7%	99%	98.4%
1.01 to 1.50	0.7%	0.6%	1%
1.51 or more	1.6%	0.4%	0.6%
Vehicles availability
No vehicles	11.2%	11.9%	10.4%
1 vehicle	49.2%	40.5%	35.1%
2 vehicles	30.1%	35%	35.9%
3 or more vehicles	9.6%	12.6%	18.6%
House heating fuel used
Gas	79.6%	82%	56.4%
Electricity	17.2%	16.1%	25.3%
Solar	0%	0.1%	0.1%
Fuel oil, kerosene etc	2.6%	1%	14%
All other fuels	0.3%	0.5%	3.7%
No fuel used	0.2%	0.4%	0.5%
Selected characteristics
Lacking complete plumbing	0.2%	0.3%	0.4%
Lacking complete kitchen	0.5%	0.8%	0.8%
No telephone service available	0%	0.7%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$171,500

owner-occupied units

Median value(USD)

Carnegie

$171,500

Allegheny County

$227,600

Pennsylvania

$254,500

Housing Cost Burden

22.2%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

22.2%

Owners without a mortgage

20.7%

Renters

31.8%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Carnegie	Allegheny County	Pennsylvania
Property value
Median Value	$171,500	$227,600	$254,500
Under $100,000	19.7%	15.8%	13.9%
$100,000 - $200,000	43.2%	26.3%	22.4%
$200,000 - $300,000	26.1%	24.1%	22.9%
$300,000 - $500,000	10.6%	22.4%	25.9%
$500,000 - $1,000,000	0.4%	9.7%	12.8%
$1,000,000 and more	0%	1.7%	2.1%
Owner-occupied households
With a mortgage	62.5%	57.5%	58%
Without a mortgage	37.5%	42.5%	42%
Median monthly owner costs
With a mortgage	$1,517	$1,685	$1,762
Without a mortgage	$631	$654	$644
Gross rent
Median rent	$890	$1,153	$1,209

Education Profile

How educated is the community and how education pays off

Adults with a college degree

36.6%

of adults 25+ with a bachelor's degree or higher

Carnegie 36.6%

Allegheny County 45.8%

Pennsylvania 35.2%

Adults without a high school diploma

6.5%

of adults (25+) without a high school diploma

Carnegie 6.5%

Allegheny County 4.4%

Pennsylvania 7.9%

School Enrollment

Who is enrolled in school and at what level

School enrollment

1,114

population (age 3+) enrolled in school

Nursery / Preschool

3.1%

K–12

62%

College / Undergraduate

31.7%

Graduate / Professional

3.1%

College-going rate (18-24 yr olds)

41.1%

of 18-24-year-olds in college or graduate school

Carnegie

41.1%

Allegheny County

52.3%

Pennsylvania

44%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Carnegie	Allegheny County	Pennsylvania
Total enrolled (age 3+)	1,114	271,864	2,913,513
Nursery / preschool	3.1%	5.9%	5.7%
K–12	62%	61.5%	66.9%
Kindergarten	11.8%	4.9%	4.8%
Elementary: Grades 1–4	21.2%	18.8%	19.7%
Elementary: Grades 5–8	17.9%	18.5%	20.7%
High School: Grades 9–12	11.1%	19.3%	21.7%
College or graduate school	34.8%	32.6%	27.4%
College, undergraduate	31.7%	23.4%	21.2%
Graduate, professional school	3.1%	9.2%	6.2%
College-going rate · 18-24 yr olds	41.1%	52.3%	44%
School type
Public school	86.7%	75.6%	75.3%
Private school	13.3%	24.4%	24.7%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

6,181

population 25 years and over

Total adults (25+)

Less than 9th grade

3.7%

9th-12th, no diploma

2.8%

HS graduate

25.5%

Some college no degree

18.4%

Associates degree

13%

Bachelors degree

26%

Graduate or professional degree

10.6%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

60.5% · 39.5%

9th-12th, no diploma

45.7% · 54.3%

HS graduate

47% · 53%

Some college no degree

41.3% · 58.7%

Associates degree

42.9% · 57.1%

Bachelors degree

47.1% · 52.9%

Graduate or professional degree

55.2% · 44.8%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Carnegie	Allegheny County	Pennsylvania
Population (25+)	6,181	899,968	9,189,697
Less than 9th grade	3.7%	1.5%	2.9%
9th–12th, no diploma	2.8%	2.9%	5%
High school diploma or GED	25.5%	25.2%	32.9%
Some college, no degree	18.4%	14.8%	15.1%
Associate's degree	13%	9.9%	8.9%
Bachelor's degree or higher	36.6%	45.8%	35.2%
Bachelor's degree	26%	26.4%	20.9%
Graduate or professional	10.6%	19.3%	14.3%
High School or higher	93.5%	95.7%	92.1%

Earnings by education level

percentage as applicable

Median Earnings

$56,160

Median earnings for adults 25+, by level

Less than HS graduate

$61,106

HS graduate

$37,101

Some college or associates

$49,018

Bachelors degree

$67,760

Graduate or professional degree

$74,583

Poverty Rate

3.1%

for ages 25+, with bachelors degree or higher

Less than HS graduate

24.2%

HS graduate

15.1%

Some college or associates

7.6%

Bachelors degree or higher

3.1%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Carnegie	Allegheny County	Pennsylvania
Median earnings
Population 25+, with earnings	$56,160	$57,377	$53,549
Less than high school graduate	$61,106	$30,069	$33,591
High school graduate (includes equivalency)	$37,101	$38,876	$40,643
Some college or associate's degree	$49,018	$46,794	$47,736
Bachelor's degree	$67,760	$68,256	$69,335
Graduate or professional degree	$74,583	$86,164	$87,132
Poverty rates
Less than high school graduate	24.2%	29.5%	25.2%
High school graduate (includes equivalency)	15.1%	14.9%	13.3%
Some college or associate's degree	7.6%	10.5%	9.1%
Bachelor's degree or higher	3.1%	4.2%	4.1%

Insights for Carnegie, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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