City in Weston County, Wyoming · 2.6 sq mi · 1,308 people per sq mi
3,349 people live in Newcastle. The typical household earns $82,734, and the median resident is 38.6 years old.
2026 projection
From 3,374 in 2020
Poverty rate 7.31%
Men 36.5 · Women 41.6
1890–2026
3,349
2026 projection
0.7% 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.
1890–2026
3,349
2026 projection
0.7% 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 | 3,349 | 0 | 0.00% |
|---|---|---|---|
| 2025 | 3,349 | -14 | 0.42% |
| 2024 | 3,363 | +20 | 0.60% |
| 2023 | 3,343 | -14 | 0.42% |
| 2022 | 3,357 | +27 | 0.81% |
| 2021 | 3,330 | -44 | 1.30% |
| 2020 | 3,374 | -48 | 1.40% |
| 2019 | 3,422 | -7 | 0.20% |
| 2018 | 3,429 | -36 | 1.04% |
| 2017 | 3,465 | -111 | 3.10% |
Showing 10 of 29 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.
Newcastle has a population change lower than Weston County, Wyoming, 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 33 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 14 residents
37% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 37% | 36% | 39% |
| Never married | 32% | 38% | 24% |
| Divorced | 20% | 23% | 16% |
| Widowed | 10% | 2% | 19% |
| Separated | 2% | 1% | 3% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources