Population: Delaware County

Latest value, 2025

580,937persons

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

576,682578,961581,239202020212022202320242025
Value
PeriodValue
2025580,937
2024581,416
2023579,086
2022576,666
2021577,178
2020576,505

Comparison with related places

Place2025
Delaware County580,937
Pennsylvania13,059,432
United States341,784,857
Lancaster County563,159
Chester County557,116
Bucks County647,828
York County473,197
Berks County440,072

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-42045"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-42045

Other indicators for Delaware County

Statistics for Delaware County