Rockville Centre, New York demographics

Rockville Centre, NY demographics: median age 42.9; 63.9% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Rockville Centre village, New York · Incorporated village · GEOID 3663264. The survey estimates a population of 25,765 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Rockville Centre is 42.9 years, with a 90% margin of error of 1.5 years. There are 9,913 households (±352). 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	42.9 ±1.5	39.8 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 25,765
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Under 18	5,972 ±613	23.2% ±2.4 pp	20.5%	22.0%
18–34	4,120 ±451	16.0% ±1.7 pp	23.1%	22.8%
35–64	10,494 ±812	40.7% ±3.1 pp	38.5%	38.0%
65 and older	5,179 ±501	20.1% ±1.9 pp	17.9%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 25,765
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Male	12,259 ±479	47.6% ±1.9 pp	48.8%	49.5%
Female	13,506 ±475	52.4% ±1.8 pp	51.2%	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: 25,765
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
White alone	20,404 ±1,024	79.2% ±4.0 pp	55.2%	61.0%
Black or African American alone	1,298 ±461	5.0% ±1.8 pp	14.4%	12.2%
American Indian and Alaska Native alone	0 ±25 · low precision	0.0% ±0.1 pp · low precision	0.6%	0.9%
Asian alone	1,472 ±687	5.7% ±2.7 pp	9.1%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±25 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	936 ±334	3.6% ±1.3 pp	10.4%	7.1%
Two or more races	1,655 ±428	6.4% ±1.7 pp	10.3%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 25,765
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Not Hispanic or Latino	23,283 ±478	90.4% ±1.9 pp	80.2%	80.7%
Hispanic or Latino	2,482 ±480	9.6% ±1.9 pp	19.8%	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: 9,913
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Married-couple family	5,681 ±352	57.3% ±2.9 pp	42.5%	46.9%
Other family: male householder, no spouse present	453 ±183	4.6% ±1.8 pp	5.2%	5.1%
Other family: female householder, no spouse present	811 ±215	8.2% ±2.1 pp	13.7%	12.2%
Nonfamily: householder living alone	2,695 ±443	27.2% ±4.4 pp	31.1%	28.7%
Nonfamily: householder not living alone	273 ±122	2.8% ±1.2 pp	7.6%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 9,913
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Households with people under 18	3,508 ±298	35.4% ±2.7 pp	27.3%	29.5%
Households without people under 18	6,405 ±551	64.6% ±5.1 pp	72.7%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 9,913
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
One-person nonfamily households	2,695 ±443	27.2% ±4.4 pp	31.1%	28.7%
Two-person households	2,990 ±433	30.2% ±4.2 pp	31.5%	33.8%
Three-person households	1,830 ±351	18.5% ±3.5 pp	15.5%	15.3%
Four-person households	1,509 ±278	15.2% ±2.8 pp	12.4%	12.6%
Five-person households	651 ±127	6.6% ±1.3 pp	5.6%	5.9%
Six-person households	193 ±99 · low precision	1.9% ±1.0 pp · low precision	2.2%	2.2%
Seven or more people	45 ±51 · low precision	0.5% ±0.5 pp · low precision	1.7%	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: 25,765
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Native	23,219 ±505	90.1% ±2.0 pp	77.2%	85.9%
Foreign born	2,546 ±506	9.9% ±2.0 pp	22.8%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 24,342
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
English only	21,152 ±745	86.9% ±2.9 pp	69.1%	77.7%
Spanish	1,529 ±364	6.3% ±1.5 pp	14.8%	13.6%
French, Haitian, or Cajun	11 ±17 · low precision	0.0% ±0.1 pp · low precision	1.5%	0.7%
German or other West Germanic	106 ±93 · low precision	0.4% ±0.4 pp · low precision	1.5%	0.5%
Russian, Polish, or other Slavic	112 ±123 · low precision	0.5% ±0.5 pp · low precision	2.0%	0.7%
Other Indo-European	872 ±469 · low precision	3.6% ±1.9 pp · low precision	4.0%	2.0%
Korean	0 ±25 · low precision	0.0% ±0.1 pp · low precision	0.5%	0.3%
Chinese, including Mandarin and Cantonese	406 ±326 · low precision	1.7% ±1.3 pp · low precision	3.2%	1.1%
Vietnamese	0 ±25 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	55 ±46 · low precision	0.2% ±0.2 pp · low precision	0.4%	0.6%
Other Asian and Pacific Island	15 ±18 · low precision	0.1% ±0.1 pp · low precision	0.9%	1.1%
Arabic	43 ±56 · low precision	0.2% ±0.2 pp · low precision	0.7%	0.5%
Other and unspecified	41 ±45 · low precision	0.2% ±0.2 pp · low precision	1.3%	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: 17,871
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Less than high school graduate	688 ±242	3.8% ±1.3 pp	12.0%	10.4%
High school graduate or equivalency	2,397 ±459	13.4% ±2.5 pp	24.3%	26.0%
Some college, no degree	2,039 ±335	11.4% ±1.9 pp	14.6%	19.1%
Associate’s degree	1,333 ±332	7.5% ±1.8 pp	8.8%	8.8%
Bachelor’s degree	5,666 ±517	31.7% ±2.8 pp	22.4%	21.6%
Graduate or professional degree	5,748 ±498	32.2% ±2.7 pp	17.9%	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: 25,607
Category	Count ± MOE	Share ± MOE (pp)	New York	U.S.
Same house	23,283 ±579	90.9% ±2.3 pp	90.1%	87.7%
Moved within same county	1,379 ±451	5.4% ±1.8 pp	5.1%	6.3%
Moved from a different county in the same state	619 ±287	2.4% ±1.1 pp	2.6%	3.1%
Moved from a different state	199 ±152 · low precision	0.8% ±0.6 pp · low precision	1.5%	2.3%
Moved from abroad	127 ±138 · low precision	0.5% ±0.5 pp · low precision	0.7%	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

1.1% of Rockville Centre residents (±0.6 percentage points) had no health insurance coverage when surveyed, compared with 5.1% in New York and 8.4% nationally. 92.9% 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	Rockville Centre	New York	U.S.	Compared with New York
People without health insurance Civilian noninstitutionalized population	1.1% ±0.6 pp · low precision	5.1%	8.4%	Lower
Households with a broadband subscription Households	92.9% ±1.1 pp	90.8%	91.0%	Higher
Veterans Civilian population age 18 and older	5.6% ±1.5 pp	3.7%	6.2%	Higher

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 Rockville Centre . 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 Rockville Centre housing and cost context or return to the city profile.