Newcastle is a city located in King County Washington. Newcastle has a 2024 population of 12,664. Newcastle is currently declining at a rate of -0.93% annually and its population has decreased by -3.62% since the most recent census, which recorded a population of 13,140 in 2020.
The average household income in Newcastle is $229,812 with a poverty rate of 3.37%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Newcastle is 37.3 years, 36.3 years for males, and 38.2 years for females.
According to the most recent ACS, the racial composition of Newcastle was:
White
Asian
Two or more races
Other race
Black or African American
Native American
Native Hawaiian or Pacific Islander
Household Type | Count | Average Size | Owner | Renter |
|---|---|---|---|---|
| All | 5,338 | 2.42 | 65.1 | 34.9 |
| Married | 2,926 | 2.93 | 81.9 | 18.1 |
| Non Family | 1,768 | 1.46 | 35 | 65 |
| Female | 379 | 3.18 | 58.8 | 41.2 |
| Male | 265 | 2.09 | 89.4 | 10.6 |
2.84
Average Family Size
2.42
Average Household Size
65.1%
Rate of Home Ownership
Married
Male
Female
NonFamily
owner
renter
Male
Female
Less Than 9th Grade
9th to 12th Grade
High School Graduate
Some College
Associates Degree
Bachelors Degree
Graduate Degree
High School Graduation Rate
Bachelors Rate
The highest rate of high school graduation is among black people with a rate of 100%.
The highest rate of bachelors degrees is among other race people with a rate of 82.47%.
All
Male
Female
$96,979
Average Earnings
$125,000
Average Male
$64,991
Average Female
Only English
Spanish
Other Indo-European Languages
Asian and Pacific Island Languages
Other Languages
63.13% of Newcastle residents speak only English, while 36.87% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 23.2% of the population.
rate
3.37%
Overall Poverty Rate
2.15%
Male Poverty Rate
4.58%
Female Poverty Rate
The race most likely to be in poverty in Newcastle is Hispanic, with 8.63% below the poverty level.
The race least likely to be in poverty in Newcastle is White, with 3.1% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 2.44%, and for those that did not work, the poverty rate was 10.66%.
Married
Widowed
Divorced
Separated
NeverMarried
58.1%
Overall Marriage Rate
59.2%
Male Marriage Rate
57.0%
Female Marriage Rate
male
female
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.
Married
Widowed
Divorced
Separated
NeverMarried
Less Than 9th Grade
High School Graduate
Some College
Bachelors or Greater
5.56%
Veteran Poverty Rate
33.7%
Veteran Disability Rate
LaborForceParticipation
65.7%
Labor Force Participation
62.4%
Employment Rate
4.9%
Unemployment Rate
LaborForceParticipation
LaborForceParticipation
Europe
Asia
Africa
Oceania
Latin America
North America
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Europe
Asia
Africa
Oceania
Latin America
North America
35.09%
Born in Newcastle
69.93%
Native Born
30.07%
Foreign Born
14.65%
Non Citizen
15.42%
Naturalized
69.93% of Newcastle residents were born in the United States, with 35.09% having been born in Washington. 14.65% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2029 | 12,069 | -119 | -0.98% |
| 2028 | 12,188 | -119 | -0.97% |
| 2027 | 12,307 | -119 | -0.96% |
| 2026 | 12,426 | -119 | -0.95% |
| 2025 | 12,545 | -119 | -0.94% |
| 2024 | 12,664 | -119 | -0.93% |
| 2023 | 12,783 | -119 | -0.92% |
| 2022 | 12,902 | -85 | -0.65% |
| 2021 | 12,987 | -153 | -1.16% |
| 2020 | 13,140 | 854 | 6.95% |
| 2019 | 12,286 | 497 | 4.22% |
| 2018 | 11,789 | 27 | 0.23% |
| 2017 | 11,762 | 163 | 1.41% |
| 2016 | 11,599 | 231 | 2.03% |
| 2015 | 11,368 | 175 | 1.56% |
| 2014 | 11,193 | 158 | 1.43% |
| 2013 | 11,035 | 241 | 2.23% |
| 2012 | 10,794 | 247 | 2.34% |
| 2011 | 10,547 | 151 | 1.45% |
| 2010 | 10,396 | 2,659 | 34.37% |
| 2000 | 7,737 | 0 | 0% |