Population: Jefferson County
Latest value, 2025
580,451persons
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
Value
| Period | Value |
|---|---|
| 2025 | 580,451 |
| 2024 | 580,359 |
| 2023 | 578,084 |
| 2022 | 576,703 |
| 2021 | 581,002 |
| 2020 | 583,131 |
Comparison with related places
| Place | 2025 |
|---|---|
| Jefferson County | 580,451 |
| Colorado | 6,012,561 |
| United States | 341,784,857 |
| Adams County | 554,668 |
| Arapahoe County | 673,820 |
| Denver County | 740,613 |
| El Paso County | 757,040 |
| Douglas County | 399,396 |
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-08059"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-08059