Rochester, New Hampshire demographics

Rochester, NH demographics: median age 43.0; 27.1% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Rochester city, New Hampshire · Incorporated city · GEOID 3365140. The survey estimates a population of 33,144 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Rochester is 43.0 years, with a 90% margin of error of 1.8 years. There are 13,932 households (±467). 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	43.0 ±1.8	43.3 ±0.1	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 33,144
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Under 18	6,029 ±555	18.2% ±1.7 pp	18.2%	22.0%
18–34	7,198 ±656	21.7% ±2.0 pp	21.4%	22.8%
35–64	13,430 ±812	40.5% ±2.5 pp	40.2%	38.0%
65 and older	6,487 ±644	19.6% ±1.9 pp	20.1%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 33,144
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Male	16,736 ±502	50.5% ±1.5 pp	49.9%	49.5%
Female	16,408 ±495	49.5% ±1.5 pp	50.1%	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: 33,144
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
White alone	30,348 ±532	91.6% ±1.6 pp	87.9%	61.0%
Black or African American alone	354 ±192 · low precision	1.1% ±0.6 pp · low precision	1.5%	12.2%
American Indian and Alaska Native alone	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.9%
Asian alone	479 ±222	1.4% ±0.7 pp	2.6%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	295 ±185 · low precision	0.9% ±0.6 pp · low precision	1.4%	7.1%
Two or more races	1,668 ±353	5.0% ±1.1 pp	6.4%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 33,144
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Not Hispanic or Latino	32,414 ±252	97.8% ±0.7 pp	95.3%	80.7%
Hispanic or Latino	730 ±254	2.2% ±0.8 pp	4.7%	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: 13,932
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Married-couple family	6,641 ±491	47.7% ±3.1 pp	51.5%	46.9%
Other family: male householder, no spouse present	541 ±177	3.9% ±1.3 pp	4.5%	5.1%
Other family: female householder, no spouse present	1,193 ±255	8.6% ±1.8 pp	8.5%	12.2%
Nonfamily: householder living alone	4,222 ±541	30.3% ±3.7 pp	27.4%	28.7%
Nonfamily: householder not living alone	1,335 ±299	9.6% ±2.1 pp	8.1%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 13,932
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Households with people under 18	3,255 ±286	23.4% ±1.9 pp	26.0%	29.5%
Households without people under 18	10,677 ±591	76.6% ±3.4 pp	74.0%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 13,932
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
One-person nonfamily households	4,222 ±541	30.3% ±3.7 pp	27.4%	28.7%
Two-person households	5,255 ±603	37.7% ±4.1 pp	38.4%	33.8%
Three-person households	2,251 ±354	16.2% ±2.5 pp	15.4%	15.3%
Four-person households	1,306 ±215	9.4% ±1.5 pp	12.1%	12.6%
Five-person households	660 ±189	4.7% ±1.3 pp	4.6%	5.9%
Six-person households	94 ±80 · low precision	0.7% ±0.6 pp · low precision	1.4%	2.2%
Seven or more people	144 ±92 · low precision	1.0% ±0.7 pp · low precision	0.7%	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: 33,144
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Native	32,002 ±319	96.6% ±1.0 pp	93.9%	85.9%
Foreign born	1,142 ±317	3.4% ±1.0 pp	6.1%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 31,742
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
English only	30,489 ±337	96.1% ±0.8 pp	92.1%	77.7%
Spanish	419 ±203	1.3% ±0.6 pp	2.6%	13.6%
French, Haitian, or Cajun	176 ±85	0.6% ±0.3 pp	1.2%	0.7%
German or other West Germanic	24 ±28 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Russian, Polish, or other Slavic	42 ±38 · low precision	0.1% ±0.1 pp · low precision	0.5%	0.7%
Other Indo-European	128 ±87 · low precision	0.4% ±0.3 pp · low precision	1.4%	2.0%
Korean	143 ±141 · low precision	0.5% ±0.4 pp · low precision	0.1%	0.3%
Chinese, including Mandarin and Cantonese	53 ±58 · low precision	0.2% ±0.2 pp · low precision	0.4%	1.1%
Vietnamese	0 ±26 · low precision	0.0% ±0.1 pp · low precision	0.1%	0.5%
Tagalog, including Filipino	59 ±59 · low precision	0.2% ±0.2 pp · low precision	0.1%	0.6%
Other Asian and Pacific Island	84 ±101 · low precision	0.3% ±0.3 pp · low precision	0.6%	1.1%
Arabic	62 ±71 · low precision	0.2% ±0.2 pp · low precision	0.2%	0.5%
Other and unspecified	63 ±71 · low precision	0.2% ±0.2 pp · low precision	0.4%	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: 24,265
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Less than high school graduate	1,589 ±340	6.5% ±1.4 pp	5.6%	10.4%
High school graduate or equivalency	7,850 ±836	32.4% ±3.3 pp	26.8%	26.0%
Some college, no degree	5,380 ±656	22.2% ±2.6 pp	17.2%	19.1%
Associate’s degree	2,865 ±437	11.8% ±1.8 pp	9.8%	8.8%
Bachelor’s degree	4,645 ±459	19.1% ±1.8 pp	24.5%	21.6%
Graduate or professional degree	1,936 ±323	8.0% ±1.3 pp	16.1%	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: 32,882
Category	Count ± MOE	Share ± MOE (pp)	New Hampshire	U.S.
Same house	29,551 ±665	89.9% ±2.0 pp	89.3%	87.7%
Moved within same county	1,659 ±406	5.0% ±1.2 pp	4.6%	6.3%
Moved from a different county in the same state	548 ±355 · low precision	1.7% ±1.1 pp · low precision	2.2%	3.1%
Moved from a different state	1,083 ±378	3.3% ±1.1 pp	3.6%	2.3%
Moved from abroad	41 ±51 · low precision	0.1% ±0.2 pp · low precision	0.3%	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

5.6% of Rochester residents (±1.2 percentage points) had no health insurance coverage when surveyed, compared with 5.3% in New Hampshire and 8.4% nationally. 93.2% 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	Rochester	New Hampshire	U.S.	Compared with New Hampshire
People without health insurance Civilian noninstitutionalized population	5.6% ±1.2 pp	5.3%	8.4%	Not statistically different
Households with a broadband subscription Households	93.2% ±0.8 pp	92.9%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	9.5% ±1.4 pp	7.6%	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 Rochester . 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 Rochester housing and cost context or return to the city profile.