Newcastle, WA Profile: Facts & Data


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Newcastle, Washington - Basic Facts

The City of Newcastle had a population of 12,093 as of July 1, 2018. Newcastle ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Washington. See peer rankings below.

The primary coordinate point for Newcastle is located at latitude 47.5317 and longitude -122.1656 in King County. The formal boundaries for the City of Newcastle (see map below) encompass a land area of 4.45 sq. miles and a water area of 0.01 sq. miles. King County is in the Pacific time zone (GMT -8). The elevation is 564 feet.

The City of Newcastle (GNIS ID: 2411243) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Newcastle is located within Seattle East Division of King County.

Jump to... (On This Page!)
  1. Newcastle 2018 Demographic Data
  2. Growth Rates for Newcastle (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Washington Research Tools (Easy Tools & Current Data)
  3. Washington Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Newcastle, WA Data & Demographics (As of July 1, 2018)


Total Population 12,093
Population in Households 12,067
Population in Familes 10,237
Population in Group Qrtrs 26
Population Density2 2,719
Diversity Index3 61


Median Household Income $119,996
Average Household Income $159,720
Per Capita Income $61,432


Total Housing Units 4,771 (100%)
Owner Occupied HU 3,364 (70.5%)
Renter Occupied HU 1,270 (26.6%)
Vacant Housing Units 137 ( 2.9%)
Median Home Value $637,958
Average Home Value $693,886


Total Households 4,634
Average Household Size 2.6
Family Households 3,321
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2018 2018-2023
Population 1.87% 1.92%
Households 1.73% 1.83%
Families 1.83% 1.95%
Median Household Income   1.84%
Per Capita Income   1.98%

Newcastle, WA - Peer Comparisons by Rank and Percentile

The table below compares Newcastle to the other 627 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 102 84th
Population Density # 112 82nd
Diversity Index # 110 83rd
Median Household Income # 24 96th
Per Capita Income # 17 97th

Additional comparisons and rankings can be made with a VERY EASY TO USE Washington Census Data Comparison Tool.

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Compare Washington July 1, 2018 Data
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