Newcastle, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Newcastle, Washington is 12,945 as of the 2023 American Community Survey, making it the 101st-largest city in Washington. The median household income is $162,646, the median home value is $1,128,200, and the median age is 37.4.
The population has grown 25.7% since 2010 (10,398 → 13,072).
12,945
Population
2919
People / sq mi
$162,646
Median Income
$1,128,200
Median Home Value
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Newcastle covers 4.4 sq mi of land at 2919 people per square mile.
About Newcastle, WA
Housing cost is the defining feature of Newcastle: the median home is valued at $1,128,200. With 12,945 residents, Newcastle is a city in Washington.
Households here are among the highest-earning of all US cities: median income is $162,646, above the US median of $78,538. Hardship is rare relative to US cities: a poverty rate of just 1.9%, below the national 12.4%. Real estate commands a premium here — a median home value of $1,128,200, with typical rent around $2,314.
Degree attainment is near the top of the range for US cities: 71.1% of adults 25+ hold a bachelor’s, above the 35.0% national rate. Remote work is widespread — 26.8% of workers stay home, above the national 14.0%, and the average commute runs about 28 minutes each way.
High housing values reframe the income picture in Newcastle — even solid earnings stretch less against home prices and rents at this level.
Newcastle city Population History (2010-2024)
The city of Newcastle city had a population of 10,398 in 2010 and 13,072 in 2024, a 25.7% growth over 14 years. The peak was 13,145 in 2020. Average annual growth rate: 1.67%.
13,072
Population (2024)
10,398
Population (2010)
13,145
Peak (2020)
1.67%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,398 |
| 2011 | 10,541 |
| 2012 | 10,785 |
| 2013 | 11,025 |
| 2014 | 11,182 |
| 2015 | 11,356 |
| 2016 | 11,583 |
| 2017 | 11,748 |
| 2018 | 11,780 |
| 2019 | 12,292 |
| 2020 | 13,145 |
| 2021 | 12,972 |
| 2022 | 12,887 |
| 2023 | 12,877 |
| 2024 | 13,072 |
Race & Ethnicity
| White | 43.3% |
| Black or African American | 1.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.9% |
| Two or More Races | 0.0% |
Economy & Income
$162,646
Median Household Income
$93,095
Per Capita Income
1.9%
Poverty Rate
3.4%
Unemployment Rate
Housing
$1,128,200
Median Home Value
$2,314
Median Rent
63.6%
Owner-Occupied
Education
98.3%
High School+
71.1%
Bachelor's+
Commute
2.6%
Drive Alone
61.4%
Public Transit
26.8%
Work From Home
27.8 min
Avg Commute
Community Profile
31.1%
Foreign Born
60.5%
Non-English at Home
2.7%
Veterans
8.5%
With Disability
97.3%
Health Insurance
97.6%
Internet Access
Employment by Industry
| Finance, Insurance & Real Estate | 21.3% |
| Professional, Scientific & Management | 17.6% |
| Manufacturing | 10.6% |
| Information | 9.1% |
| Transportation & Warehousing | 6.2% |
| Education, Health Care & Social Services | 5.4% |
| Arts, Entertainment & Food Services | 3.4% |
| Retail Trade | 3.2% |
| Construction | 2.8% |
| Public Administration | 0.8% |
| Agriculture & Mining | 0.3% |
Largest cities in Washington
Largest counties in Washington
Part of Washington
Metro areas in Washington
City rankings
Frequently Asked Questions
Newcastle, Washington has a population of 12,945 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 101st-largest city in Washington.
The median household income in Newcastle, Washington is $162,646, with 1.9% of residents living below the federal poverty level.
The median home value in Newcastle, Washington is $1,128,200, with median monthly rent at $2,314 and a homeownership rate of 63.6%.
The median age in Newcastle, Washington is 37.4 years. The population is 50.3% male and 49.7% female.
The population has grown 25.7% since 2010 (10,398 → 13,072).
Newcastle city, WA Climate
Newcastle city, WA has an average annual temperature of 10.3°C (51°F) and receives about 1315 mm of precipitation per year. The warmest month is August and the coldest is December. Figures are 1970–2000 climate normals.
10.3°C
Avg Temp
1315
Precip (mm/yr)
Aug
Hottest Month
Dec
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 4° / 39° | 175 mm |
| February | 5° / 41° | 136 mm |
| March | 7° / 44° | 132 mm |
| April | 9° / 48° | 104 mm |
| May | 12° / 54° | 75 mm |
| June | 15° / 59° | 61 mm |
| July | 18° / 64° | 35 mm |
| August | 18° / 64° | 38 mm |
| September | 15° / 59° | 62 mm |
| October | 11° / 51° | 111 mm |
| November | 6° / 43° | 194 mm |
| December | 4° / 38° | 192 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Newcastle city, WA
The most comfortable months to visit Newcastle city, WA are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 24°C high). The coldest is December (near 1°C low). November is usually the wettest month.
Where to stay near Newcastle
Visiting or relocating to Newcastle, WA? Compare hotels and short-term rentals across the metro — live availability and prices.
Top-rated places to stay near Newcastle
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Statewide data for Washington
Population, race, income, age, and trends across Washington
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.