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CITY · 2000 CENSUS

St. Clair

Pennsylvania · 3,254 residents · 1.23 sq mi
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The short version

With 3,254 people, St. Clair is a city in Pennsylvania. At a median age of 44.0, this is an older place than the country as a whole. 10% of adults hold a bachelor's degree, below the 24% national rate. Home values have risen by half since 1990, reaching $47,400. That trails the Pennsylvania median by roughly 30%. Median rent is $343 a month.

At a glance
Lower income
below the US median
US median: $42,589
Older
median age 44.0
US median: 35.2
Less educated
10% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01

Population & growth

3,254
−8%since 1990
from 3,524 in 1990
1990 – 2025
44.0
+5%since 1990
from 42.1 in 1990
US average: 35.2
Land area
1.23 sq mi
Population, 19902024
3K3K3K3K4K19902000201020202024St. Clair
20243K
1990201020202024
Age distribution, 2000
Under 54.3%(141)
US avg: 6.8%
5 to 96.2%(203)
US avg: 7.3%
10 to 145.1%(165)
US avg: 7.3%
15 to 194.6%(150)
US avg: 7.2%
20 to 244.7%(154)
US avg: 6.7%
25 to 3414%(454)
US avg: 14.2%
35 to 4412.3%(400)
US avg: 16%
45 to 5412.7%(412)
US avg: 13.4%
55 to 6410%(327)
US avg: 8.6%
65 to 7411.9%(388)
US avg: 6.5%
75 to 8411.4%(370)
US avg: 4.4%
85 and over2.8%(90)
US avg: 1.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

$28,161
+10%inflation adjusted, since 1990
from $19,440 in 1990
US average: $42,589
1990 – 2024
$15,418
+59%since 1990
from $9,693 in 1990
US average: $21,522
11.8%
+1.1 ptssince 1990
from 10.7% in 1990
US average: 12.4%
Section 03

Housing

$47,400
+15%inflation adjusted, since 1990
from $31,200 in 1990
US average: $120,530
1990 – 2024
$343
−1%inflation adjusted, since 1990
from $262 in 1990
US average: $602
72.7%
Unchangedsince 1990
from 72.6% in 1990
27.3% rent
Section 04

Race & ethnicity

1990
White, non-Hispanic100%(3,524)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)
2000
White, non-Hispanic98.4%(3,201)
Black0.6%(21)
Hispanic / Latino0.7%(23)
Asian0.1%(2)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Colombian4.9%(135)
Puerto Rican2.4%(65)
Ancestry
Polish22.9%(630)
German21%(579)
Irish20.6%(566)
Italian12.1%(333)
English6.3%(173)
Dutch4.4%(121)
Lithuanian4.4%(121)
French4.1%(114)
Greek3.3%(92)
American3.2%(87)
Russian2.5%(69)
Ukrainian2.4%(67)
+ 8 more ancestry groups with data
Slovak2.1%(57)
Arab1.4%(38)
Hungarian1.1%(30)
Macedonian0.9%(26)
Lebanese0.7%(20)
Czech0.7%(20)
Welsh0.7%(19)
Egyptian0.7%(18)
Section 05

Education

9.6%
+5.3 ptssince 1990
from 4.2% in 1990
US average: 24.4%
High school or higher
77.4%
+14.7 ptssince 1990
from 62.7% in 1990
US average: 80.3%
3.3%
+1.7 ptssince 1990
from 1.6% in 1990
US average: 8.8%
Section 06

Commute & transportation

15.8 min
−8%since 1990
from 17.2 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status
Men 15+
Never married32.5%(406)
Married54%(675)
Widowed5.7%(71)
Divorced7.8%(98)
Women 15+
Never married20.9%(320)
Married47.4%(726)
Widowed24.8%(380)
Divorced6.9%(105)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

3.0%
−13.9 ptssince 2013
from 16.9% in 2013
US average: 8.4%
57.6%
+5.2 ptssince 2020
from 52.4% in 2020
US average: 54.8%
Direct-purchase
13.3%
−3.3 ptssince 2020
from 16.6% in 2020
US average: 13.8%
23.4%
−1.7 ptssince 2020
from 25.1% in 2020
US average: 18.4%
22.5%
−3.2 ptssince 2020
from 25.7% in 2020
US average: 20.9%
VA health care
3.1%
+0.7 ptssince 2020
from 2.4% in 2020
US average: 2.2%
Any private
71.7%
−0.2 ptssince 2020
from 71.9% in 2020
US average: 67.1%
Any public
40.6%
−5.3 ptssince 2020
from 45.9% in 2020
US average: 36.7%

Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.

Section 09 · Service history

Veterans

Veterans by period of service, 2024
Gulf War (2001 or later)7%(11)
US avg: 26.4%
Gulf War (1990s)13.4%(21)
US avg: 24.3%
Vietnam era45.9%(72)
US avg: 33.1%
Korean War12.1%(19)
US avg: 4.5%
World War II0%(0)
US avg: 1%

Share of the 157 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.

BAR + DOT: THIS PLACE · TICK: US AVERAGE
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Frequently asked

How many people live in St. Clair, Pennsylvania?

St. Clair, Pennsylvania has about 3,254 residents according to the 2000 Census.

What is the median household income in St. Clair, Pennsylvania?

The typical household in St. Clair, Pennsylvania earns about $28,161 a year. Half of households make more than that, and half make less.

Is St. Clair, Pennsylvania expensive?

In St. Clair, Pennsylvania, the median home is worth about $47,400, and the typical rent is about $343 a month.

How educated are people in St. Clair, Pennsylvania?

About 9.6% of adults age 25 and over in St. Clair, Pennsylvania hold a bachelor's degree or higher.

What is the poverty rate in St. Clair, Pennsylvania?

About 11.8% of people in St. Clair, Pennsylvania live below the federal poverty line.

Has St. Clair, Pennsylvania grown since 1990?

Yes, St. Clair, Pennsylvania has shrunk since 1990. The population has lost about 270 residents, a change of about -8 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →