Newcastle, Washington
City in King County, Washington · ZIP 98056, 98059
- King County
- Census data · ACS 2019-2023
- 3 public schools
- 13,072 (2024 estimate)Population
- 5,373Households
- $162,646Median household income
- $1,128,200Median home value
- 3Public schools
- 2ZIP codes
About Newcastle
This page shows only what has been published about Newcastle: Census facts with their sources first, then its businesses, jobs, events, people in public roles, housing and questions as they are added. Nothing here is written by the town government.
Town intelligenceOfficial sources, refreshed yearly
| Census | Population |
|---|---|
| 2000 | 7,737 |
| 2010 | 10,380 |
| 2020 | 13,017 |
As counted at each census, within the boundaries the area had then; the current estimate is in the glance card.
Sources: Census 2000 Summary File 1: total population, place level, state 53, retrieved November 14, 2026; Census 2010 Summary File 1: total population, place level, state 53, retrieved November 14, 2026; Census 2020 Redistricting Data (P.L. 94-171): total population, place level, state 53, retrieved November 14, 2026.
Median household income $162,646 · Share of households by income, American Community Survey 5-year 2019-2023, table S1901.
Source: American Community Survey 5-year subject table S1901 (household income) 2019–2023, place level, state 53, retrieved November 14, 2026.
- Owner occupied
- 3,419 units
- Renter occupied
- 1,954 units
- Vacancy rate
- 6.1%
Occupied housing units by tenure and the share of all units vacant, American Community Survey 5-year 2019-2023, table DP04.
Source: American Community Survey 5-year data profile 2019–2023, place level, state 53, retrieved November 14, 2026.
| Measure | Newcastle | King County | Washington |
|---|---|---|---|
| Population | 12,945 | 2,262,713 | 7,740,984 |
| Median household income | $162,646 | $122,148 | $94,952 |
| Median age | 37.4 | 37.3 | 38.2 |
| Median home value | $1,128,200 | $811,200 | $519,800 |
| Bachelor’s degree or higher | 71.1% | 55.9% | 38.8% |
| Foreign-born residents | 30.4% | 25.1% | 15.1% |
| Owner-occupied homes | 63.6% | 56.1% | 63.9% |
| Mean commute to work | 27.8 minutes | 28.1 minutes | 27.0 minutes |
Source: American Community Survey 5-year data profile 2019–2023, place level, state 53, retrieved November 14, 2026.
CommunityRules and moderation
Loading…
Events in NewcastleAll events
No upcoming event is listed in Newcastle yet. Members and businesses add events from the Events page; each is screened before it shows.
Schools
| School | Type | Grades | District |
|---|---|---|---|
| Hazelwood Elementary School | Public | K–5 | Renton School District |
| Newcastle Elementary School | Public | K–5 | Issaquah School District |
| Vera Risdon Middle School | Public | 6–8 | Renton School District |
Open public schools in the NCES directory for 2023–2024, placed by their listed location; private schools are not in the source. Enrollment and ratings are not shown.
Sources: NCES Common Core of Data, public school directory 2023–2024, retrieved November 14, 2026; NCES EDGE public school geocodes 2024–2025, retrieved November 14, 2026.
Frequently asked about NewcastlePromoted from questions people asked
No question about Newcastle has been asked often enough to publish an answer yet. Ask Newcastle and the answer, once a person checks it, appears here.
Nearby towns
- Mercer IslandCity
- RentonCity
- Bryn Mawr-SkywayCensus designated place
- BellevueCity
- East Renton HighlandsCensus designated place
- IssaquahCity
- FairwoodCensus designated place
- TukwilaCity
- Boulevard ParkCensus designated place
Other towns in King County
- AlgonaCity
- Ames LakeCensus designated place
- AuburnCity
- BaringCensus designated place
- BellevueCity
- Black DiamondCity
- BothellCity
- Boulevard ParkCensus designated place
- Bryn Mawr-SkywayCensus designated place