Newcastle

Population: 12,945
Median household income: $162,646
Median home value: $1,128,200

Newcastle is a community in King County, Washington, home to 12,945 residents. At $162,646, its median household income sits above King County's $122,148.

From 2019 to 2023, Newcastle's population grew 10.2% from 11,750 to 12,945, while its median home value rose 48.5% from $759,500 to $1,128,200.

The median resident is 37.4 years old. The largest age group is 25 to 34, 18.6% of residents.

Demographics

ACS 2019–2023

Population: 12,945
Median age: 37.4 yrs
Median household income: $162,646
Median home value: $1,128,200
Median gross rent: $2,314
Housing units: 5,723
Homeownership rate: 63.6%
Bachelor's degree or higher: 71.1%
Unemployment rate: 5.1%

Trends

ACS 5-year · 2019–2023

Population

11,75012,945

Median household income

$129,828$162,646

Median home value

$759,500$1,128,200

Median gross rent

$1,814$2,314

Year	Population	Median household income	Median home value	Median gross rent
2019	11,750	$129,828	$759,500	$1,814
2020	12,078	$155,933	$780,100	$1,895
2021	12,855	$139,439	$888,400	$2,004
2022	12,931	$151,007	$1,036,200	$2,163
2023	12,945	$162,646	$1,128,200	$2,314

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 57.4%

5 to 1713.6%

18 to 245.6%

25 to 3418.6%

35 to 4415.0%

45 to 5412.8%

55 to 6411.8%

65 to 749.5%

75 and over5.6%

	Count	Share
Under 5	957	7.4%
5 to 17	1,759	13.6%
18 to 24	730	5.6%
25 to 34	2,413	18.6%
35 to 44	1,945	15.0%
45 to 54	1,652	12.8%
55 to 64	1,528	11.8%
65 to 74	1,236	9.5%
75 and over	725	5.6%

Race & ethnicity

	Count	Share
White (non-Hispanic)	5,228	40.4%
Black or African American	203	1.6%
American Indian & Alaska Native	0	0.0%
Asian	5,118	39.5%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	403	3.1%
Two or more races	1,239	9.6%
Hispanic or Latino (any race)	754	5.8%

Educational attainment (age 25+)

No high school diploma1.7%

High school graduate8.2%

Some college or associate's18.9%

Bachelor's degree38.8%

Graduate or professional degree32.3%

	Count	Share
No high school diploma	164	1.7%
High school graduate	780	8.2%
Some college or associate's	1,797	18.9%
Bachelor's degree	3,690	38.8%
Graduate or professional degree	3,068	32.3%

Commute to work

Mean travel time to work: 28 min

Drove alone61.4%

Carpooled5.0%

Public transit2.6%

Walked1.8%

Bicycle1.5%

Worked from home26.8%

Other means1.0%

How workers get to work

	Count	Share
Drove alone	4,046	61.4%
Carpooled	328	5.0%
Public transit	171	2.6%
Walked	118	1.8%
Bicycle	97	1.5%
Worked from home	1,763	26.8%
Other means	64	1.0%

Travel time

	Count	Share
Under 15 min	636	13.2%
15 to 29 min	1,968	40.8%
30 to 44 min	1,437	29.8%
45 to 59 min	545	11.3%
60+ min	238	4.9%

Households

Average household size: 2.40
Poverty rate: 3.1% (402 of 12,810)

	Count	Share
Family households	3,604	67.1%
Nonfamily households	1,769	32.9%

Housing

Median year structure built: 1999

Occupancy

	Count	Share
Occupied	5,373	93.9%
Vacant	350	6.1%

Tenure (of occupied units)

	Count	Share
Owner-occupied	3,419	63.6%
Renter-occupied	1,954	36.4%

1-unit, detached60.0%

1-unit, attached6.4%

2 to 4 units0.7%

5 to 19 units6.1%

20 or more units25.5%

Mobile home & other1.2%

Units in structure

	Count	Share
1-unit, detached	3,435	60.0%
1-unit, attached	367	6.4%
2 to 4 units	40	0.7%
5 to 19 units	348	6.1%
20 or more units	1,462	25.5%
Mobile home & other	71	1.2%

Geography

Place GEOID: 5348645
Type (LSAD): 25
Land area: 4.44 sq mi
Water area: 0.02 sq mi
Center point: 47.5315, -122.1656