Population: Marion County

Latest value, 2025

355,777persons

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

346,626351,031355,435202020212022202320242025
Value
PeriodValue
2025355,777
2024353,218
2023349,966
2022348,364
2021347,887
2020346,284

Comparison with related places

Place2025
Marion County355,777
Oregon4,273,586
United States341,784,857
Lane County381,584
Clackamas County426,280
Jackson County221,795
Deschutes County213,072
Linn County132,843

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-41047"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-41047

Other indicators for Marion County

Statistics for Marion County