Town in Boulder County, Colorado · 0.6 sq mi · 422 people per sq mi
242 people live in Jamestown. The typical household earns $149,375, and the median resident is 45.8 years old.
2026 projection
From 256 in 2020
Poverty rate 2.47%
Men 48.1 · Women 45.5
2010–2026
242
2026 projection
5.5% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
242
2026 projection
5.5% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 242 | -3 | 1.22% |
|---|---|---|---|
| 2025 | 245 | -2 | 0.81% |
| 2024 | 247 | -2 | 0.80% |
| 2023 | 249 | -5 | 1.97% |
| 2022 | 254 | -1 | 0.39% |
| 2021 | 255 | -1 | 0.39% |
| 2020 | 256 | -1 | 0.39% |
| 2019 | 257 | -3 | 1.15% |
| 2018 | 260 | 0 | 0.00% |
| 2017 | 260 | 0 | 0.00% |
Showing 10 of 17 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Jamestown has a population change lower than Boulder County, Colorado, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 3 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
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 40 residents
50% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 50% | 57% | 43% |
| Never married | 28% | 23% | 32% |
| Divorced | 16% | 14% | 18% |
| Widowed | 6% | 6% | 6% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources