City · Wyoming
Newcastle, Wyoming
Newcastle, city, in Weston County, Wyoming. Newcastle had 3,349 residents on July 1, 2025 by the Census Bureau's estimate, down 0.7% since 2020; the 2020 Census counted 3,374 and the ACS 2020-2024 5-year estimates put it at 3,348 (±15). GEOID 5656215.
Residents, July 2025 estimate
3,349
Census Bureau estimate (no margin published)
2020 Census count: 3,374 · ACS 2020-2024: 3,348 ±15
Median household income
$82,734
±$16,327 (90% margin)
Wyoming: $76,176
Median home value
$178,900
±$36,868 (90% margin)
Wyoming: $309,700
Median gross rent
$758
±$193 (90% margin)
Wyoming: $992
Where is Newcastle and what county is it in?
Newcastle is a city in Weston County, Wyoming. It covers 2.6 square miles of land, 1,317 residents per square mile in 2020.
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Newcastle, and is it growing?
The Census Bureau estimates that 3,349 people lived in Newcastle on July 1, 2025, down 0.7% since 2020, while Wyoming grew 2.1%. The 2020 Census counted 3,374 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 3,348 (±15).
| Measure | Newcastle | Weston County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,348 ±15 | 6,826 | −97 |
| Households | 1,229 ±163 | 2,848 | no clear change |
| Average household size | 2.42 ±0.29 | 2.26 | no clear change |
| Housing units | 1,479 ±151 | 3,406 | no clear change |
Newcastle's population since 2000
From 3,065 in 2000 to 3,349 in 2025: up 9.3%. The 2000, 2010 and 2020 figures are census counts, each for Newcastle as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Newcastle?
The median resident of Newcastle is 38.6 years old; 22.1% are under 18 and 18.2% are 65 or older. The largest group is non-Hispanic white residents at 87.0%, then Hispanic or Latino residents (of any race) at 6.5%.
| Measure | Newcastle | Weston County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.6 ±3.8 | 44.0 | no clear change |
| Under 18 years | 22.1% ±3.9 pts | 19.6% | – |
| 65 years and over | 18.2% ±3.6 pts | 22.1% | – |
| Male | 55.8% ±3.8 pts | 55.2% | – |
| Hispanic or Latino (any race) | 6.5% ±4.1 pts | 5.3% | +4.9 pts |
| White alone, not Hispanic | 87.0% ±4.1 pts | 85.2% | −9.6 pts |
| Black or African American alone, not Hispanic | 0.0% ±0.2 pts | 0.0% | – |
| Asian alone, not Hispanic | 0.0% ±1.1 pts | 0.5% | – |
| American Indian and Alaska Native alone, not Hispanic | 2.6% ±2.9 pts | 1.7% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.2 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.8% ±4.2 pts | 6.7% | – |
| Some other race alone, not Hispanic | 0.0% ±1.1 pts | 0.5% | – |
| Born outside the United States | 2.1% ±2.6 pts | 1.9% | – |
| Speak a language other than English at home (age 5+) | 4.9% ±5.6 pts | 4.2% | – |
| Civilian veterans (age 18+) | 11.4% ±3.8 pts | 13.2% | – |
| With a disability | 12.8% ±4.3 pts | 14.4% | – |
| No health insurance coverage | 19.7% ±7.3 pts | 13.8% | no clear change |
| High school graduate or higher (age 25+) | 90.6% ±5.2 pts | 90.9% | – |
| Bachelor's degree or higher (age 25+) | 20.0% ±6.4 pts | 20.1% | no clear change |
| Graduate or professional degree (age 25+) | 5.4% ±2.8 pts | 5.5% | – |
| Lived in the same house a year earlier | 82.2% ±11.6 pts | 86.7% | – |
| Moved from another state in the past year | 3.6% ±2.7 pts | 2.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Newcastle earn?
Half of Newcastle's 1,229 households earn less than $82,734 a year (±$16,327), against $89,509 in Weston County and $76,176 in Wyoming. In 2015-2019 it was $73,269 in 2024 dollars; the margins of error cannot tell the two periods apart. 7.3% of residents live below the poverty line.
| Measure | Newcastle | Weston County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $82,734 ±$16,327 | $89,509 | no clear change |
| Mean household income | $91,558 ±$16,389 | $103,007 | – |
| Per capita income | $38,678 ±$11,297 | $45,697 | no clear change |
| People below the poverty line | 7.3% ±4.8 pts | 9.0% | no clear change |
| Children under 18 below the poverty line | 8.8% ±10.7 pts | 10.9% | – |
| Households receiving SNAP | 5.3% ±5.0 pts | 2.7% | – |
| Households with a computer | 95.2% ±3.4 pts | 93.5% | – |
| Households with a broadband subscription | 84.6% ±8.2 pts | 82.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Newcastle?
Owners occupy 79.7% of Newcastle's occupied homes and renters 20.3%. The median owner-occupied home is valued at $178,900 by its owner (±$36,868). The median renter pays $758 a month including utilities.
| Measure | Newcastle | Weston County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $178,900 ±$36,868 | $221,700 | no clear change |
| Median gross rent | $758 ±$193 | $698 | no clear change |
| Renters paying 35% or more of income on rent | 29.7% ±26.2 pts | 19.8% | – |
| Median monthly owner costs, with a mortgage | $1,582 ±$279 | $1,673 | – |
| Owner-occupied homes | 79.7% ±8.2 pts | 86.8% | no clear change |
| Renter-occupied homes | 20.3% ±8.2 pts | 13.2% | – |
| Housing units | 1,479 ±151 | 3,406 | no clear change |
| Homeowner vacancy rate | 4.0% ±6.0 pts | 1.9% | – |
| Rental vacancy rate | 9.5% ±14.0 pts | 13.2% | – |
| Single-family detached homes | 72.1% ±9.2 pts | 72.5% | – |
| Mobile homes | 16.0% ±8.4 pts | 17.4% | – |
| Built 2020 or later | 0.0% ±2.5 pts | 0.9% | – |
| Built 2010 to 2019 | 2.4% ±3.3 pts | 9.1% | – |
| Built 1939 or earlier | 21.6% ±7.9 pts | 17.9% | – |
| Households with no vehicle | 5.1% ±4.4 pts | 3.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Newcastle building?
Builders took permits for 1 new housing units in Newcastle in 2025 (1 in single-family houses), 0.3 per 1,000 residents against 3.8 across Wyoming.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Newcastle work and get to work?
65.0% of Newcastle's workers drive alone. The average trip to work takes 26.9 minutes.
| Measure | Newcastle | Weston County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 59.1% ±8.2 pts | 57.0% | – |
| Unemployment rate | 0.4% ±0.7 pts | 1.0% | – |
| Drove alone to work | 65.0% ±10.3 pts | 64.0% | – |
| Carpooled | 19.3% ±8.8 pts | 16.8% | – |
| Public transportation | 8.1% ±7.4 pts | 7.8% | – |
| Walked | 3.9% ±3.5 pts | 4.7% | – |
| Worked from home | 3.2% ±3.3 pts | 4.9% | – |
| Mean travel time to work | 26.9 min ±8.5 | 30.2 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Newcastle?
1 census tract lies mostly in Newcastle, and 1 more reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 9513Weston County | 3,628 | $90,357 |
| Tract 9511Weston County | 3,198 | $76,944 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Newcastle) · Census block assignment files
How does Newcastle compare with other places in Wyoming?
By the Census Bureau's July 2025 estimates, Newcastle is the 5,997th-most populous of the 19,476 U.S. incorporated places that have one and the 21st-most populous of 99 in Wyoming.
Newcastle ranks 16th of 54 places in Wyoming with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 21st | 99 |
| Growth 2020-2025 (PEP) | 31st | 42 |
| Residents per square mile | 18th | 56 |
| Median household income | 16th | 54 |
| Per capita income | 30th | 56 |
| Median home value | 46th | 53 |
| Median gross rent | 39th | 48 |
| Poverty rate | 32nd | 34 |
| Bachelor's degree or higher | 38th | 54 |
| Median age | 29th | 56 |
| Owner-occupied share | 11th | 55 |
| Travel time to work | 4th | 56 |
Newcastle's figures with every place in Wyoming (CSV)
Every place in Wyoming, sortable · Compare Newcastle with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Newcastle?
21 of the 57 figures for Newcastle on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Newcastle are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Newcastle.