Rockville, Maryland demographics

Rockville, MD demographics: median age 39.6; 65.6% 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 city, Maryland · Incorporated city · GEOID 2467675. The survey estimates a population of 67,671 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Rockville is 39.6 years, with a 90% margin of error of 1.3 years. There are 26,976 households (±702). 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	39.6 ±1.3	39.4 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 67,671
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Under 18	13,694 ±1,065	20.2% ±1.6 pp	22.2%	22.0%
18–34	15,337 ±939	22.7% ±1.4 pp	21.7%	22.8%
35–64	25,901 ±1,235	38.3% ±1.8 pp	39.5%	38.0%
65 and older	12,739 ±913	18.8% ±1.3 pp	16.7%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 67,671
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Male	32,225 ±847	47.6% ±1.3 pp	48.7%	49.5%
Female	35,446 ±849	52.4% ±1.3 pp	51.3%	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: 67,671
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
White alone	30,859 ±1,388	45.6% ±2.1 pp	48.2%	61.0%
Black or African American alone	7,787 ±1,036	11.5% ±1.5 pp	29.4%	12.2%
American Indian and Alaska Native alone	209 ±154 · low precision	0.3% ±0.2 pp · low precision	0.4%	0.9%
Asian alone	15,208 ±1,357	22.5% ±2.0 pp	6.6%	6.0%
Native Hawaiian and Other Pacific Islander alone	10 ±19 · low precision	0.0% ±0.0 pp · low precision	0.0%	0.2%
Some other race alone	5,873 ±1,057	8.7% ±1.6 pp	6.9%	7.1%
Two or more races	7,725 ±1,102	11.4% ±1.6 pp	8.5%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 67,671
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Not Hispanic or Latino	55,429 ±1,131	81.9% ±1.7 pp	87.5%	80.7%
Hispanic or Latino	12,242 ±1,135	18.1% ±1.7 pp	12.5%	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: 26,976
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Married-couple family	13,031 ±556	48.3% ±1.6 pp	46.2%	46.9%
Other family: male householder, no spouse present	1,299 ±340	4.8% ±1.3 pp	5.1%	5.1%
Other family: female householder, no spouse present	2,907 ±402	10.8% ±1.5 pp	13.7%	12.2%
Nonfamily: householder living alone	7,776 ±741	28.8% ±2.6 pp	28.7%	28.7%
Nonfamily: householder not living alone	1,963 ±297	7.3% ±1.1 pp	6.4%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 26,976
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Households with people under 18	7,553 ±438	28.0% ±1.5 pp	30.6%	29.5%
Households without people under 18	19,423 ±863	72.0% ±2.6 pp	69.4%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 26,976
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
One-person nonfamily households	7,776 ±741	28.8% ±2.6 pp	28.7%	28.7%
Two-person households	9,156 ±586	33.9% ±2.0 pp	32.1%	33.8%
Three-person households	4,325 ±478	16.0% ±1.7 pp	16.0%	15.3%
Four-person households	4,105 ±483	15.2% ±1.7 pp	13.3%	12.6%
Five-person households	1,173 ±219	4.3% ±0.8 pp	6.0%	5.9%
Six-person households	307 ±111	1.1% ±0.4 pp	2.4%	2.2%
Seven or more people	134 ±66	0.5% ±0.2 pp	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: 67,671
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Native	43,560 ±1,546	64.4% ±2.3 pp	83.4%	85.9%
Foreign born	24,111 ±1,541	35.6% ±2.3 pp	16.6%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 64,004
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
English only	35,320 ±1,628	55.2% ±2.5 pp	78.9%	77.7%
Spanish	9,098 ±894	14.2% ±1.4 pp	9.6%	13.6%
French, Haitian, or Cajun	966 ±326	1.5% ±0.5 pp	1.3%	0.7%
German or other West Germanic	293 ±188 · low precision	0.5% ±0.3 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	1,952 ±680	3.0% ±1.1 pp	0.6%	0.7%
Other Indo-European	3,654 ±642	5.7% ±1.0 pp	2.5%	2.0%
Korean	1,734 ±665	2.7% ±1.0 pp	0.6%	0.3%
Chinese, including Mandarin and Cantonese	5,076 ±708	7.9% ±1.1 pp	1.2%	1.1%
Vietnamese	492 ±306 · low precision	0.8% ±0.5 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	567 ±195	0.9% ±0.3 pp	0.6%	0.6%
Other Asian and Pacific Island	2,243 ±748	3.5% ±1.2 pp	1.1%	1.1%
Arabic	511 ±406 · low precision	0.8% ±0.6 pp · low precision	0.4%	0.5%
Other and unspecified	2,098 ±613	3.3% ±1.0 pp	2.5%	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: 48,821
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Less than high school graduate	3,542 ±544	7.3% ±1.1 pp	8.9%	10.4%
High school graduate or equivalency	5,151 ±524	10.6% ±1.1 pp	23.4%	26.0%
Some college, no degree	5,526 ±652	11.3% ±1.3 pp	17.4%	19.1%
Associate’s degree	2,583 ±477	5.3% ±1.0 pp	6.8%	8.8%
Bachelor’s degree	13,421 ±1,019	27.5% ±2.0 pp	22.7%	21.6%
Graduate or professional degree	18,598 ±1,031	38.1% ±2.0 pp	20.8%	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: 66,873
Category	Count ± MOE	Share ± MOE (pp)	Maryland	U.S.
Same house	54,748 ±1,288	81.9% ±1.9 pp	88.7%	87.7%
Moved within same county	4,791 ±838	7.2% ±1.3 pp	5.2%	6.3%
Moved from a different county in the same state	1,385 ±457	2.1% ±0.7 pp	2.8%	3.1%
Moved from a different state	3,620 ±739	5.4% ±1.1 pp	2.6%	2.3%
Moved from abroad	2,329 ±802	3.5% ±1.2 pp	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

5.3% of Rockville residents (±0.9 percentage points) had no health insurance coverage when surveyed, compared with 6.3% in Maryland and 8.4% nationally. 95.2% 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	Maryland	U.S.	Compared with Maryland
People without health insurance Civilian noninstitutionalized population	5.3% ±0.9 pp	6.3%	8.4%	Lower
Households with a broadband subscription Households	95.2% ±1.0 pp	92.4%	91.0%	Higher
Veterans Civilian population age 18 and older	4.5% ±1.0 pp	6.8%	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 Rockville . 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 housing and cost context or return to the city profile.