Allegheny County Population

1790–2026

1.22M

2026 projection

2.1% since 2020 (decrease)

00.5M1M1.5M2M18001850190019502000

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Allegheny County. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
20261,222,896-2,1390.17%
20251,225,035-2,1390.17%
20241,227,174-1,7370.14%
20231,228,911-4,4140.36%
20221,233,325-12,0100.96%
20211,245,335-4,2500.34%
20201,249,585+33,8692.79%
20191,215,716-1,7920.15%
20181,217,508-2,9150.24%
20171,220,423-6,4700.53%

Showing 10 of 38 years.

Allegheny County Demographics

40.6median age

Median age

Female42.1 yrs
Male39.2 yrs

Adults

1,007,949
249,886 seniors (65+) · 25% of adults758,063 other adults

Sex

Female 51.2% · 633,973Male 48.8% · 604,204

Population by age

MaleFemale85+ years, male: 10,57285+ years, female: 20,92080–84 years, male: 10,96380–84 years, female: 16,51975–79 years, male: 18,78275–79 years, female: 25,18470–74 years, male: 29,71170–74 years, female: 35,36965–69 years, male: 38,70965–69 years, female: 43,15760–64 years, male: 40,95560–64 years, female: 46,00355–59 years, male: 37,66555–59 years, female: 39,40450–54 years, male: 35,60950–54 years, female: 36,31045–49 years, male: 33,11945–49 years, female: 33,12840–44 years, male: 39,56340–44 years, female: 37,28135–39 years, male: 44,76835–39 years, female: 43,88930–34 years, male: 48,31230–34 years, female: 47,01025–29 years, male: 43,84025–29 years, female: 43,22620–24 years, male: 36,92220–24 years, female: 36,94015–19 years, male: 37,25815–19 years, female: 36,83610–14 years, male: 32,97310–14 years, female: 31,3965–9 years, male: 32,7965–9 years, female: 31,3000–4 years, male: 31,6870–4 years, female: 30,10185+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–420K20K40K40K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 12,382 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Allegheny County Income

$78,548median household income

Median household income

$78,548

Half of households earn more, half earn less

Median earnings

$57,377

Typical yearly pay for a worker 25 or older.

Poverty rate

11.5%

About 1 in 9 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Allegheny County Marital Status

45% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married45%47%43%
Never married38%41%36%
Divorced9%8%10%
Widowed6%3%9%
Separated2%1%2%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

8 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year