Newcastle, Washington demographics

Newcastle, WA demographics: median age 37.5; 68.5% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Newcastle city, Washington · Incorporated city · GEOID 5348645. The survey estimates a population of 12,989 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Newcastle is 37.5 years, with a 90% margin of error of 2.0 years. There are 5,416 households (±272). Age and household distributions show how these totals are composed; they do not establish which neighborhood suits a particular person.

Every count and share is an estimate. “±” is a 90% margin of error (MOE); pp means percentage points. Derived shares use the category count divided by the named universe. Aggregated category MOEs and percentage MOEs are approximate. A margin larger than half its estimate is flagged as low precision. Blank source uncertainty is shown as unavailable, never zero.

Age distribution and sex

City, state and U.S. estimates · ACS 2020–2024
Measure / survey universe	City estimate ± MOE	State estimate ± MOE	U.S. estimate ± MOE
Median age Total population · years	37.5 ±2.0	38.3 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 12,989
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Under 18	2,589 ±366	19.9% ±2.8 pp	21.4%	22.0%
18–34	3,366 ±585	25.9% ±4.5 pp	23.7%	22.8%
35–64	4,987 ±498	38.4% ±3.8 pp	38.3%	38.0%
65 and older	2,047 ±410	15.8% ±3.2 pp	16.6%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 12,989
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Male	6,242 ±375	48.1% ±2.9 pp	50.4%	49.5%
Female	6,747 ±380	51.9% ±2.9 pp	49.6%	50.5%

The age groups are mutually exclusive and cover the entire population. The sex categories follow this ACS table’s published classification; they are not a survey of gender identity.

Race and Hispanic origin

Race · B02001 · ACS 2020–2024 Total population: 12,989
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
White alone	5,063 ±579	39.0% ±4.5 pp	65.8%	61.0%
Black or African American alone	459 ±410 · low precision	3.5% ±3.2 pp · low precision	4.0%	12.2%
American Indian and Alaska Native alone	0 ±21 · low precision	0.0% ±0.2 pp · low precision	1.2%	0.9%
Asian alone	5,462 ±656	42.1% ±5.0 pp	9.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±21 · low precision	0.0% ±0.2 pp · low precision	0.7%	0.2%
Some other race alone	471 ±462 · low precision	3.6% ±3.6 pp · low precision	5.8%	7.1%
Two or more races	1,534 ±396	11.8% ±3.0 pp	12.8%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 12,989
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Not Hispanic or Latino	12,402 ±270	95.5% ±2.1 pp	85.6%	80.7%
Hispanic or Latino	587 ±272	4.5% ±2.1 pp	14.4%	19.3%

Hispanic origin and race are separate questions. People of Hispanic or Latino origin may be of any race and appear in both tables. Do not add the Hispanic share to race shares. Race alone and two-or-more-race groups are the mutually exclusive categories of the race table.

Household types, children and living alone

Household types · B11001 · ACS 2020–2024 Households: 5,416
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Married-couple family	3,005 ±300	55.5% ±4.8 pp	49.1%	46.9%
Other family: male householder, no spouse present	260 ±266 · low precision	4.8% ±4.9 pp · low precision	4.8%	5.1%
Other family: female householder, no spouse present	300 ±113	5.5% ±2.1 pp	9.5%	12.2%
Nonfamily: householder living alone	1,293 ±313	23.9% ±5.7 pp	27.7%	28.7%
Nonfamily: householder not living alone	558 ±184	10.3% ±3.4 pp	8.9%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 5,416
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Households with people under 18	1,622 ±214	29.9% ±3.7 pp	29.3%	29.5%
Households without people under 18	3,794 ±414	70.1% ±6.8 pp	70.7%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 5,416
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
One-person nonfamily households	1,293 ±313	23.9% ±5.7 pp	27.7%	28.7%
Two-person households	1,838 ±301	33.9% ±5.3 pp	35.3%	33.8%
Three-person households	1,185 ±256	21.9% ±4.6 pp	15.1%	15.3%
Four-person households	833 ±280	15.4% ±5.1 pp	12.7%	12.6%
Five-person households	219 ±109	4.0% ±2.0 pp	5.6%	5.9%
Six-person households	48 ±52 · low precision	0.9% ±1.0 pp · low precision	2.2%	2.2%
Seven or more people	0 ±30 · low precision	0.0% ±0.5 pp · low precision	1.5%	1.4%

A family household contains related people under the Census definition. A nonfamily household can contain one person or unrelated people sharing a home. Households with children can also appear in the household-type and size tables, so those tables must not be added together. Household estimates exclude people living in group quarters from the household universe.

Nativity and languages spoken at home

Nativity · B05002 · ACS 2020–2024 Total population: 12,989
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Native	8,730 ±553	67.2% ±4.3 pp	84.6%	85.9%
Foreign born	4,259 ±555	32.8% ±4.3 pp	15.4%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 12,254
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
English only	7,125 ±630	58.1% ±5.0 pp	78.6%	77.7%
Spanish	350 ±243 · low precision	2.9% ±2.0 pp · low precision	9.0%	13.6%
French, Haitian, or Cajun	316 ±397 · low precision	2.6% ±3.2 pp · low precision	0.4%	0.7%
German or other West Germanic	20 ±31 · low precision	0.2% ±0.3 pp · low precision	0.4%	0.5%
Russian, Polish, or other Slavic	394 ±234 · low precision	3.2% ±1.9 pp · low precision	1.5%	0.7%
Other Indo-European	676 ±317	5.5% ±2.6 pp	2.0%	2.0%
Korean	497 ±384 · low precision	4.1% ±3.1 pp · low precision	0.7%	0.3%
Chinese, including Mandarin and Cantonese	1,872 ±432	15.3% ±3.5 pp	1.9%	1.1%
Vietnamese	371 ±213 · low precision	3.0% ±1.7 pp · low precision	1.0%	0.5%
Tagalog, including Filipino	75 ±104 · low precision	0.6% ±0.8 pp · low precision	0.9%	0.6%
Other Asian and Pacific Island	462 ±225	3.8% ±1.8 pp	2.1%	1.1%
Arabic	56 ±87 · low precision	0.5% ±0.7 pp · low precision	0.4%	0.5%
Other and unspecified	40 ±67 · low precision	0.3% ±0.5 pp · low precision	1.1%	0.8%

Foreign born means not a U.S. citizen at birth; it includes naturalized citizens. Language categories describe speech at home among people age five and older. A language other than English at home does not establish that someone cannot speak English. This city page uses the published C16001 summary categories because the more detailed B16001 table does not provide these city records in this release.

Educational attainment

Highest completed education · B15003 · ACS 2020–2024 Population age 25 and older: 9,441
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Less than high school graduate	241 ±147 · low precision	2.6% ±1.6 pp · low precision	7.7%	10.4%
High school graduate or equivalency	913 ±267	9.7% ±2.8 pp	21.6%	26.0%
Some college, no degree	1,198 ±270	12.7% ±2.8 pp	21.0%	19.1%
Associate’s degree	621 ±219	6.6% ±2.3 pp	10.0%	8.8%
Bachelor’s degree	3,662 ±409	38.8% ±4.0 pp	24.0%	21.6%
Graduate or professional degree	2,806 ±515	29.7% ±5.3 pp	15.6%	14.1%

The denominator excludes residents under 25. Each person is counted in the highest attainment category they completed. This table does not measure the quality of local schools or the education level of every current student.

Residence one year earlier

Geographic mobility · B07003 · ACS 2020–2024 Population age 1 and older: 12,867
Category	Count ± MOE	Share ± MOE (pp)	Washington	U.S.
Same house	10,691 ±580	83.1% ±4.5 pp	85.5%	87.7%
Moved within same county	1,023 ±456	8.0% ±3.5 pp	8.0%	6.3%
Moved from a different county in the same state	239 ±208 · low precision	1.9% ±1.6 pp · low precision	2.8%	3.1%
Moved from a different state	461 ±228	3.6% ±1.8 pp	2.9%	2.3%
Moved from abroad	453 ±426 · low precision	3.5% ±3.3 pp · low precision	0.8%	0.6%

These are respondents’ residence patterns one year before their survey response, pooled across the five-year window. They are not a net migration count for 2025. A person can move to a different house within the same city or county; moves within the same county should not automatically be interpreted as new arrivals to the city.

Health insurance, internet access and veterans

1.9% of Newcastle residents (±0.9 percentage points) had no health insurance coverage when surveyed, compared with 6.3% in Washington and 8.4% nationally. 96.6% of households subscribe to broadband of any type, including cellular data plans. A subscription is not the same as available service: the FCC National Broadband Map shows providers at a specific address.

City, state and U.S. shares · ACS 2020–2024
Measure	Newcastle	Washington	U.S.	Compared with Washington
People without health insurance Civilian noninstitutionalized population	1.9% ±0.9 pp	6.3%	8.4%	Lower
Households with a broadband subscription Households	96.6% ±1.6 pp	93.6%	91.0%	Higher
Veterans Civilian population age 18 and older	3.0% ±1.2 pp	7.8%	6.2%	Lower

Reading and reusing the estimates

The Census table links above lead to the original detailed tables. Counts, source universes and uncertainty are retained in the source observation download for Newcastle . Compare these figures with the same survey window; do not compare one city’s five-year estimate with another city’s annual estimate as though they measured the same period. For methods, see uncertainty and denominator calculations.

Read Newcastle housing and cost context or return to the city profile.