| Official Name: | Newcastle, Wyoming |
| Settlement Type: | City |
| Mapsize: | 260px |
| Pushpin Map: | USA |
| Pushpin Map Caption: | Location in the United States |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Weston |
| Leader Title: | Mayor |
| Leader Name: | Pam Gualtieri |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 6.63 |
| Area Land Km2: | 6.63 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 2.56 |
| Area Land Sq Mi: | 2.56 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Est: | 3326 |
| Pop Est As Of: | 2023 |
| Population Total: | 3374 |
| Population Density Km2: | 512.12 |
| Population Density Sq Mi: | 1326.43 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation M: | 1319 |
| Elevation Ft: | 4327 |
| Coordinates: | 43.8531°N -104.2094°W |
| Postal Code Type: | ZIP codes |
| Postal Code: | 82701, 82715 |
| Area Code: | 307 |
| Blank Name: | FIPS code |
| Blank Info: | 56-56215[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1592014[3] |
Newcastle is a city in and the county seat of Weston County, Wyoming, United States.[4] The population was 3,374 at the 2020 census.
Newcastle is situated at the southwest edge of the Black Hills, at the intersection of U.S. routes 16 and 85.
According to the United States Census Bureau, the city has a total area of 2.55sqmi, all land.[5]
As of the census[6] of 2010, there were 3,532 people, 1,439 households, and 868 families living in the city. The population density was 1385.1PD/sqmi. There were 1,663 housing units at an average density of 652.2/mi2. The racial makeup of the city was 94.6% White, 0.4% African American, 1.6% Native American, 0.3% Asian, 0.1% Pacific Islander, 1.0% from other races, and 2.0% from two or more races. Hispanic or Latino people of any race were 3.4% of the population.
There were 1,439 households, of which 27.2% had children under the age of 18 living with them, 47.0% were married couples living together, 8.9% had a female householder with no husband present, 4.4% had a male householder with no wife present, and 39.7% were non-families. 34.7% of all households were made up of individuals, and 13.3% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.86.
The median age in the city was 39.6 years. 22% of residents were under the age of 18; 8.9% were between the ages of 18 and 24; 25.7% were from 25 to 44; 27.2% were from 45 to 64; and 16.2% were 65 years of age or older. The gender makeup of the city was 53.9% male and 46.1% female.
As of the census of 2000, there were 3,065 people, 1,253 households, and 844 families living in the city. The population density was 1242.1/mi2. There were 1,458 housing units at an average density of 590.9/mi2. The racial makeup of the city was 95.79% White, 0.13% African American, 1.44% Native American, 0.29% Asian, 1.01% from other races, and 1.34% from two or more races. Hispanic or Latino people of any race were 1.66% of the population.
There were 1,253 households, out of which 30.4% had children under the age of 18 living with them, 54.0% were married couples living together, 10.1% had a female householder with no husband present, and 32.6% were non-families. 28.4% of all households were made up of individuals, and 13.0% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.88.
In the city, the population was spread out, with 24.3% under the age of 18, 7.9% from 18 to 24, 24.7% from 25 to 44, 24.5% from 45 to 64, and 18.6% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 93.1 males. For every 100 females age 18 and over, there were 91.5 males.
The median income for a household in the city was $29,873, and the median income for a family was $36,929. Males had a median income of $31,222 versus $16,628 for females. The per capita income for the city was $15,378. About 7.5% of families and 11.4% of the population and 7.5% of families were below the poverty line, including 14.8% of those under the age of 18 and 15.7% of those 65 and older.
The Wyoming Department of Corrections Wyoming Honor Conservation Camp & Boot Camp is located in Newcastle.[7] [8] The facility was operated by the Wyoming Board of Charities and Reform until that agency was dissolved as a result of a state constitutional amendment passed in November 1990.[9]
The United States Postal Service operates the Newcastle Post Office.[10] The Weston County Senior Citizen Center provides paratransit service for Newcastle and its surroundings on weekdays,[11] primarily for use by seniors.
Public education in the city of Newcastle is provided by Weston County School District #1. The district's schools include Newcastle Elementary (split into two campuses for grades K–2 & 3–5), Newcastle Middle School (grades 6–8), and Newcastle High School (grades 9–12).
Newcastle has a public library, a branch of the Weston County Library System.[12]
Newcastle experiences a cold semi-arid climate (Köppen BSk) with continental influence, with cold winters and hot, wet summers.
The town boasts great walking trails. A historic tour starts at the Anna Miller Museum. Also included are the Greenwood Cemetery and a downtown historic district listed with the National Register of Historic Places. The "Serenity Trail" allows walkers to view wildlife in the area.