Population: Allegheny County

Latest value, 2025

1,225,035persons

Source: U.S. Census Bureau
Retrieved 2026-10-08
Published 2026-03-26

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A.

Evolution

1,225,9191,237,3101,248,701202020212022202320242025
Value
PeriodValue
20251,225,035
20241,227,174
20231,228,911
20221,233,325
20211,245,335
20201,249,585

Comparison with related places

Place2025
Allegheny County1,225,035
Pennsylvania13,059,432
United States341,784,857
Montgomery County877,643
Philadelphia County1,574,281
Bucks County647,828
Delaware County580,937
Lancaster County563,159

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

Get this figure from your agent

Call get_value through the MCP server or the REST API.

get_value {"indicator":"population","place":"us-county-42003"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-42003

Other indicators for Allegheny County

Statistics for Allegheny County