What kinds of homes are in Newcastle, WA?

Name: Types of homes in Newcastle, WA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Newcastle, WA has 5,723 (±258) homes (2020–2024 American Community Survey).

That is about 1,290 homes per square mile of land.

57.5% are detached single-family houses.

0.3% are in buildings of two to four units.

36.2% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 5,723 (±258)
Detached houses: 57.5%
2–4 unit buildings: 0.3%
5+ unit buildings: 36.2%

Homes in Newcastle by building size

Housing units by units in structure, 2020–2024
Building type	Newcastle	King County	Washington	United States
Single-family, detached	57.5% (±3.7 points)	50.0%	61.9%	61.3%
Single-family, attached (townhouse, rowhouse)	5.8% (±2.0 points)	5.4%	4.4%	6.2%
2 units	0.3% (±0.5 points)	1.6%	2.3%	3.4%
3 or 4 units	0.0% (±0.7 points)	3.8%	3.5%	4.3%
5 to 9 units	2.6% (±1.4 points)	5.7%	4.3%	4.5%
10 to 19 units	3.7% (±1.8 points)	6.7%	4.9%	4.3%
20 or more units	29.9% (±3.8 points)	25.2%	13.0%	10.3%
Mobile home	0.2% (±0.4 points)	1.4%	5.5%	5.6%
Boat, RV, van, etc.	0.0% (±0.7 points)	0.1%	0.3%	0.1%

In Newcastle, the share of homes in buildings of five or more units is not measurably different from King County (37.6%).

It is also higher than in Washington (22.2%).

It is higher than the national figure (19.1%).

Homes in buildings of 5 or more units in places near Newcastle

Nearest places with a published estimate, compared with Newcastle
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Newcastle	—	36.2% (±4.4 points)	—
Mercer Island	3.8 mi	31.5% (±3.3 points)	Not measurably different
Renton	3.9 mi	33.2% (±2.6 points)	Not measurably different
Beaux Arts Village	4.1 mi	0.0% (±58.2 points)	Not measurably different
Bryn Mawr-Skyway	4.3 mi	27.6% (±6.0 points)	Lower
Bellevue	4.6 mi	42.5% (±2.0 points)	Higher
East Renton Highlands	5.4 mi	1.4% (±2.0 points)	Lower
Issaquah	5.5 mi	42.9% (±4.1 points)	Higher
Fairwood (King County)	5.9 mi	23.3% (±4.6 points)	Lower

Nearby places with a measurably lower figure: Bryn Mawr-Skyway, WA (27.6%), East Renton Highlands, WA (1.4%), Fairwood (King County), WA (23.3%).

Nearby places with a measurably higher figure: Bellevue, WA (42.5%), Issaquah, WA (42.9%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across King County, place by place

Rank	Place	Homes in buildings of 5 or more units
4	Woodinville	43.4% (±5.5 points)
5	Boulevard Park	43.3% (±14.7 points)
6 (tie)	Issaquah	42.9% (±4.1 points)
6 (tie)	SeaTac	42.9% (±6.4 points)
8	Bellevue	42.5% (±2.0 points)
9	Kirkland	36.3% (±2.2 points)
10	Newcastle	36.2% (±4.4 points)
11	Burien	34.1% (±3.4 points)
12	Kent	33.9% (±2.3 points)
13	Renton	33.2% (±2.6 points)
14	Federal Way	33.1% (±2.8 points)
15 (tie)	Des Moines	31.5% (±4.5 points)
15 (tie)	Mercer Island	31.5% (±3.3 points)

Showing 13 of 59 places in King County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Newcastle

How many homes are in Newcastle?

Newcastle, WA has an estimated 5,723 (±258) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Newcastle houses or apartments?

57.5% are detached houses and 5.8% attached houses, while 36.5% are in buildings of two or more units.

How many two-family and small multifamily homes are in Newcastle?

0.3% of homes in Newcastle are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Newcastle city, Washington

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Newcastle city, Washington (place:48645, in state:53).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.