|• Mayor||Linda Newing|
|• Total||4.46 sq mi (11.55 km2)|
|• Land||4.45 sq mi (11.52 km2)|
|• Water||0.01 sq mi (0.03 km2)|
|Elevation||561 ft (171 m)|
| • Estimate |
|• Density||2,762.87/sq mi (1,066.79/km2)|
|Time zone||UTC-8 (PST)|
|• Summer (DST)||UTC-7 (PDT)|
|GNIS feature ID||1512503|
Although Newcastle was not incorporated until 1994, it has been an important settlement and town since the late 19th century and played a major role in the development of Seattle and the surrounding region. Newcastle was one of the region's first coal mining areas and its railroad link to Seattle was the first in King County. Timber also played a role in the early history of Newcastle. Coal delivered by rail from Newcastle's mines to Seattle fueled the growth of the Port of Seattle and attracted railroads, most notably the Great Northern Railway.
The Newcastle coal mine began producing coal by the 1870s. More than 13 million tons of coal had been extracted by the time the mine closed in 1963. The history of Newcastle's coal mining industry and the legacy of the mines' many Chinese laborers are memorialized in place names such as Coal Creek, Coal Creek Parkway, and the Coal Creek and China Creek golf courses.
Based on per capita income, Newcastle ranks 11th of 522 areas in the state of Washington to be ranked. In CNN Money's 2011 rankings of best places to live in the United States, Newcastle was in the top 20, along with nearby Sammamish. It ranked 17th in Newsweek's 2009 rankings of best places to live in the United States.
Coal was discovered along Coal Creek in 1863 by surveyors Philip H. Lewis and Edwin Richardson, who had been working in the area for the General Land Office. Newcastle was named for the idiom "Coals to Newcastle" by a party of coal surveyors in 1869 according to F. H. Whitworth, who was part of the party. One of them suggested the name "New Castle" which was subsequently adopted by all parties of interest. The idiom itself refers to the English city of Newcastle upon Tyne.
Newcastle (originally spelled "New Castle") as a village was properly established by the 1870s, though the official date given for the founding of the town is 1869, as seen on the seal for the City of Newcastle. By 1872, 75–100 tons of coal per day were being produced at Newcastle. About 60 men worked at the mines. The Seattle and Walla Walla Railroad, the first railroad in King County, reached Newcastle from Seattle in 1878. Coal mining ended in 1963.
The area was an unincorporated area within King County until it incorporated as a city on September 30, 1994. Currently the city is a suburban community. Based on Newcastle's location north of Renton, south of Bellevue, and across Lake Washington from Seattle, these are the communities in which most of the residents of Newcastle work. East of southeast Lake Washington is a large quantity of hilly terrain, which creates opportunities for view properties. This created the impetus for the location of the Newcastle Golf Course, along with many high-value homes at higher elevations with views of downtown Bellevue, Seattle, and Mercer Island, as well as the Olympic Mountains. Notable attractions of the area include the Golf Club at Newcastle, a brand new Family YMCA, Lake Boren Park, a well developed trail system, and nearby Cougar Mountain in the east of Newcastle.
Newcastle and Newport Hills
The community was not always known as Newcastle. When suburban development came in the 1960s, the old mining town of Newcastle was long gone and all but forgotten. The area then became known as Newport Hills.
In the early 1990s there was a movement to incorporate as a new city. But some members of the community objected—some believed that the new city would be too small to be viable, while others feared that the city council would be in the pocket of the hilltop golf course. In 1993, five parcels of Newport Hills each voted to annex themselves into Bellevue. Those 5 parcels comprised nearly half the population of the community. They became the Newport Hills neighborhood of Bellevue. When Newport Hills incorporated as a new city the following year, their first order of business was to choose a new name, since it would now be confusing to have a city of Newport Hills adjacent to the Newport Hills neighborhood of Bellevue. Residents voted on Cougar Mountain and Newcastle, and chose the latter. 
Mixed (Democratic, Republican, and Third Parties).
|2020||27.71% 1,982||69.15% 4,946||3.15% 225|
The city has an active trail-building community, creating a system of trails that are being integrated into new housing developments and parks. Most of the trail-work has been completed by volunteers and the Washington Conservation Corps, sponsored by the city of Newcastle. The trail system will eventually lead all the way to Lake Washington to the west, in conjunction with Renton, and is already connected to Cougar Mountain Regional Wildland Park to the east, which is in unincorporated King County.
The city has not obtained its own ZIP code even though, based on the ZIP code designation, some sales taxes paid by Newcastle residents go to Renton instead of Newcastle as tax revenues (among other perceived detrimental impacts related to mail service, insurance rates, property values, and credit ratings). This is all the more troubling[why?] considering the small size of Newcastle with a small commercial district which does not create as much property tax or sales tax revenue for the city compared to neighboring cities like Renton to the south, Bellevue to the north, or Issaquah to the east.
According to the United States Census Bureau, the city of Newcastle has a total area of 4.46 square miles (11.55 km2), of which 4.45 square miles (11.53 km2) are land and 0.01 square miles (0.03 km2) are water.
|Climate data for Newcastle, Washington|
|Record high °F (°C)||64
|Average high °F (°C)||48
|Average low °F (°C)||36
|Record low °F (°C)||−10
|Average precipitation inches (mm)||4.8
Newcastle is served by two school districts, with the boundary line roughly going north–south just to the west of Coal Creek Parkway. The three "in-city" schools are Newcastle Elementary, which is operated by the Issaquah School District 411 and Hazlewood Elementary next to Risdon Middle School which are operated by Renton School District 403.
Neighborhoods: The Highlands at Newcastle, East Olympus, Mile Post, Lake Boren, The Trails at Newcastle, China Creek, China Falls, The Reserve at Newcastle
Schools: Hazelwood Elementary School, Risdon Middle School, Hazen High School
Neighborhoods: Lake Washington Ridge, West Olympus, Hazelwood, Newport Woods, Newport Hills
Surrounding cities and neighborhoods
U.S. Decennial Census
Although the present-day African American population of Newcastle is small, in the 1880s when it was a mining center, Newcastle had the Puget Sound area's largest African American population, greater even than that of Seattle.
As of the census of 2010, there were 10,380 people, 4,021 households, and 2,860 families residing in the city. The population density was 2,332.6 inhabitants per square mile (900.6/km2). There were 4,227 housing units at an average density of 949.9 per square mile (366.8/km2). The racial makeup of the city was 65.4% White, 2.6% African American, 0.4% Native American, 24.7% Asian, 0.3% Pacific Islander, 1.6% from other races, and 5.0% from two or more races. Hispanic or Latino of any race were 4.2% of the population.
There were 4,021 households, of which 35.3% had children under the age of 18 living with them, 61.6% were married couples living together, 6.2% had a female householder with no husband present, 3.3% had a male householder with no wife present, and 28.9% were non-families. 21.8% of all households were made up of individuals, and 4.4% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.04.
The median age in the city was 38.7 years. 23.7% of residents were under the age of 18; 6.6% were between the ages of 18 and 24; 31.1% were from 25 to 44; 29.7% were from 45 to 64; and 9% were 65 years of age or older. The gender makeup of the city was 49.6% male and 50.4% female.
The median income for a household in the city was $109,833. The per capita income for the city was $58,118. The median home cost in Newcastle is $511,500.
As of the census of 2000, there were 7,737 people, 3,028 households, and 2,189 families residing in the city. The population density was 1,731.5 people per square mile (668.3/km2). There were 3,117 housing units at an average density of 697.6 per square mile (269.2/km2). The racial makeup of the city was 75.05% White, 1.62% African American, 0.45% Native American, 18.25% Asian, 0.25% Pacific Islander, 1.36% from other races, and 3.02% from two or more races. Hispanic or Latino of any race were 2.88% of the population.
There were 3,028 households, out of which 34.3% had children under the age of 18 living with them, 63.7% were married couples living together, 5.8% had a female householder with no husband present, and 27.7% were non-families. 20.5% of all households were made up of individuals, and 2.8% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 2.98.
In the city the population was spread out, with 23.4% under the age of 18, 7.2% from 18 to 24, 37.9% from 25 to 44, 24.9% from 45 to 64, and 6.6% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 100.0 males. For every 100 females age 18 and over, there were 97.9 males.
The median income for a household in the city was $80,320, and the median income for a family was $91,381. Males had a median income of $60,639 versus $41,868 for females. The per capita income for the city was $35,057. About 1.8% of families and 2.0% of the population were below the poverty line, including 1.1% of those under age 18 and 6.6% of those age 65 or over.
Newcastle has been a preferred residence of numerous current and former Seattle Seahawks players, coaches, and front office personnel due to its close proximity to the NFL franchise's headquarters and practice facility on Lake Washington at the Virginia Mason Athletic Center (VMAC) in Renton.
- Gus Bradley, former defensive coordinator for the Seattle Seahawks
- Nate Burleson, former NFL player for the Seattle Seahawks and NFL commentator
- John Carlson, former NFL player for the Seattle Seahawks, Minnesota Vikings, and Arizona Cardinals
- Kam Chancellor, NFL player for the Seattle Seahawks
- James Hasty, former NFL player for the Kansas City Chiefs and the New York Jets
- Steve Hutchinson, former NFL player for the Seattle Seahawks
- Julian Peterson, former NFL player for the Seattle Seahawks
- Dan Quinn, former defensive coordinator for the Seattle Seahawks
- Mack Strong, former NFL player for the Seattle Seahawks
- Marcus Trufant, former NFL player for the Seattle Seahawks
- Alan White, drummer for the progressive rock band Yes
The city of Newcastle has designated the following landmarks:
|Newcastle Cemetery||1879 (First burial)||1982||SW of 69th Way off 129th Avenue SE|
|Pacific Coast Coal Co. House#75||1870s||1982||7210 138th Avenue SE|
|Thomas Rouse Road||1880||1984||136th SE & 144th Place SE|
Newcastle is known for its 36-hole, 350-acre (140 ha) golf complex, which features two championship, 18-hole courses known as the Coal Creek and China Creek courses. Designed by golf course architect Robert E. Cupp in consultation with PGA Masters champion Fred Couples and in partnership with Oki Golf, the courses have views of Mount Rainier, Lake Washington, Lake Sammamish, the Olympic and Cascade mountain ranges, and the downtown skylines of the cities of Seattle and Bellevue. Practice and hospitality facilities include a heated driving range, a pro shop, an 18-hole mini-golf/putting range, private (pitching/putting/chipping) practice tees, and a 44,000-square-foot (4,100 m2) clubhouse with restaurants, pubs, and event spaces.
- "City Council - City of Newcastle". City of Newcastle. Retrieved December 15, 2019.
- "Councilmembers". City of Newcastle. Retrieved March 20, 2022.
- "2019 U.S. Gazetteer Files". United States Census Bureau. Retrieved August 7, 2020.
- "U.S. Census website". United States Census Bureau. Retrieved December 19, 2012.
- "Annual Estimates of the Resident Population for Incorporated Places in Washington: April 1, 2010 to July 1, 2019". United States Census Bureau. May 2020. Retrieved May 27, 2020.
- "Newcastle". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- "Annual Estimates of the Resident Population for Incorporated Places in Washington: April 1, 2010 to July 1, 2019". United States Census Bureau. May 2020. Retrieved May 21, 2020.
- "City Profile and History". City of Newcastle. Archived from the original on May 19, 2009. Retrieved August 9, 2009.
- "Surveyors discover coal at Newcastle (east King County) in October 1863". HistoryLink. Retrieved August 9, 2009.
- Meany, Edmond S. (1923). Origin of Washington Geographic Names. University of Washington Press. p. 187. Retrieved August 3, 2022 – via HathiTrust.
- "Newcastle (King County) produces 75 to 100 tons of coal per day in 1872". HistoryLink. Retrieved August 9, 2009.
- HistoryLink (2018), Seattle & Walla Walla Railroad reaches Newcastle on February 5, 1878.. Retrieved April 14, 2018.
- "City of Newport Hills (Later Newcastle) takes form on September 30, 1994".
- "Past elections - King County".
- Tim Pfarr (September 3, 2009). "Postal Service denies city new ZIP code". Retrieved July 5, 2012.
- "City continues fight for new ZIP code". June 5, 2009. Retrieved July 5, 2012.
- Jim Feehan (July 3, 2009). "ZIP code survey shows delivery, tax problems". Retrieved July 5, 2012.
- Mike Lindblom (August 9, 2000). "ZIP-code blues tax Newcastle". Retrieved July 5, 2012.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
- "US Gazetteer files 2010". United States Census Bureau. Archived from the original on January 25, 2012. Retrieved December 19, 2012.
- "Monthly Averages for Newcastle, WA". The Weather Channel. Retrieved April 20, 2016.
- U.S. Census Bureau Geography Division (December 21, 2020). 2020 Census – School District Reference Map: King County, WA (PDF) (Map). 1:80,000. U.S. Census Bureau. p. 2. Retrieved August 3, 2022.
- "City and Town Population Totals: 2020-2021". United States Census Bureau. August 11, 2022. Retrieved August 11, 2022.
- Census figures for 1980 & 1990 enumerated prior to incorporation as Newport Hills CDP. The city's boundaries are much smaller than the CDP area, as the remainder of the CDP area was annexed by Bellevue. See "Census 2000 Boundary Change Notes for Washington" for further information.
- United States Census Bureau. "Census of Population and Housing". Retrieved July 26, 2013.
- Esther Hall Mumford (1980), Seattle's Black Victorians 1852-1901, Seattle: Ananse Press, p. 13.
- "King County and City Landmarks List". (372 KB). King County (undated, last modified March, 2014). Retrieved September 28, 2014.
- "The Golf Club at Newcastle - History". Archived from the original on September 22, 2018. Retrieved August 7, 2023.