Williamsport, Pennsylvania demographics

Williamsport, PA demographics: median age 31.5; 27.0% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Williamsport city, Pennsylvania · Incorporated city · GEOID 4285312. The survey estimates a population of 27,612 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Williamsport is 31.5 years, with a 90% margin of error of 1.5 years. There are 11,320 households (±426). 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	31.5 ±1.5	40.9 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 27,612
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Under 18	5,633 ±508	20.4% ±1.8 pp	20.4%	22.0%
18–34	9,560 ±643	34.6% ±2.3 pp	21.9%	22.8%
35–64	8,720 ±614	31.6% ±2.2 pp	38.1%	38.0%
65 and older	3,699 ±374	13.4% ±1.4 pp	19.5%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 27,612
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Male	14,028 ±513	50.8% ±1.9 pp	49.3%	49.5%
Female	13,584 ±508	49.2% ±1.8 pp	50.7%	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: 27,612
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
White alone	20,710 ±668	75.0% ±2.4 pp	74.5%	61.0%
Black or African American alone	3,584 ±620	13.0% ±2.2 pp	10.6%	12.2%
American Indian and Alaska Native alone	150 ±134 · low precision	0.5% ±0.5 pp · low precision	0.2%	0.9%
Asian alone	400 ±136	1.4% ±0.5 pp	3.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.0%	0.2%
Some other race alone	258 ±117	0.9% ±0.4 pp	3.7%	7.1%
Two or more races	2,510 ±515	9.1% ±1.9 pp	7.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 27,612
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Not Hispanic or Latino	26,377 ±319	95.5% ±1.1 pp	91.3%	80.7%
Hispanic or Latino	1,235 ±310	4.5% ±1.1 pp	8.7%	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: 11,320
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Married-couple family	3,015 ±318	26.6% ±2.6 pp	46.2%	46.9%
Other family: male householder, no spouse present	555 ±203	4.9% ±1.8 pp	4.7%	5.1%
Other family: female householder, no spouse present	1,852 ±364	16.4% ±3.2 pp	11.5%	12.2%
Nonfamily: householder living alone	4,626 ±478	40.9% ±3.9 pp	30.9%	28.7%
Nonfamily: householder not living alone	1,272 ±288	11.2% ±2.5 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 11,320
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Households with people under 18	2,941 ±338	26.0% ±2.8 pp	27.0%	29.5%
Households without people under 18	8,379 ±535	74.0% ±3.8 pp	73.0%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 11,320
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
One-person nonfamily households	4,626 ±478	40.9% ±3.9 pp	30.9%	28.7%
Two-person households	3,567 ±497	31.5% ±4.2 pp	34.7%	33.8%
Three-person households	1,364 ±255	12.0% ±2.2 pp	14.9%	15.3%
Four-person households	1,037 ±216	9.2% ±1.9 pp	11.7%	12.6%
Five-person households	447 ±139	3.9% ±1.2 pp	5.0%	5.9%
Six-person households	211 ±106 · low precision	1.9% ±0.9 pp · low precision	1.7%	2.2%
Seven or more people	68 ±53 · low precision	0.6% ±0.5 pp · low precision	1.1%	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: 27,612
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Native	27,077 ±151	98.1% ±0.5 pp	92.3%	85.9%
Foreign born	535 ±143	1.9% ±0.5 pp	7.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 25,948
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
English only	24,941 ±365	96.1% ±0.9 pp	87.6%	77.7%
Spanish	490 ±138	1.9% ±0.5 pp	5.6%	13.6%
French, Haitian, or Cajun	33 ±30 · low precision	0.1% ±0.1 pp · low precision	0.5%	0.7%
German or other West Germanic	120 ±82 · low precision	0.5% ±0.3 pp · low precision	0.9%	0.5%
Russian, Polish, or other Slavic	11 ±33 · low precision	0.0% ±0.1 pp · low precision	0.8%	0.7%
Other Indo-European	70 ±57 · low precision	0.3% ±0.2 pp · low precision	1.7%	2.0%
Korean	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	60 ±77 · low precision	0.2% ±0.3 pp · low precision	0.8%	1.1%
Vietnamese	27 ±37 · low precision	0.1% ±0.1 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	17 ±24 · low precision	0.1% ±0.1 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	57 ±46 · low precision	0.2% ±0.2 pp · low precision	0.7%	1.1%
Arabic	122 ±121 · low precision	0.5% ±0.5 pp · low precision	0.4%	0.5%
Other and unspecified	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.5%	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: 16,603
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Less than high school graduate	1,578 ±312	9.5% ±1.9 pp	7.9%	10.4%
High school graduate or equivalency	5,875 ±505	35.4% ±2.8 pp	32.9%	26.0%
Some college, no degree	2,811 ±422	16.9% ±2.5 pp	15.1%	19.1%
Associate’s degree	1,864 ±303	11.2% ±1.8 pp	8.9%	8.8%
Bachelor’s degree	2,745 ±390	16.5% ±2.3 pp	20.9%	21.6%
Graduate or professional degree	1,730 ±311	10.4% ±1.8 pp	14.3%	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: 27,268
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Same house	22,466 ±725	82.4% ±2.6 pp	89.3%	87.7%
Moved within same county	2,682 ±632	9.8% ±2.3 pp	5.6%	6.3%
Moved from a different county in the same state	1,553 ±294	5.7% ±1.1 pp	2.6%	3.1%
Moved from a different state	567 ±210	2.1% ±0.8 pp	1.9%	2.3%
Moved from abroad	0 ±22 · low precision	0.0% ±0.1 pp · low precision	0.4%	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 Williamsport residents (±1.2 percentage points) had no health insurance coverage when surveyed, compared with 5.6% in Pennsylvania and 8.4% nationally. 92.2% 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	Williamsport	Pennsylvania	U.S.	Compared with Pennsylvania
People without health insurance Civilian noninstitutionalized population	5.6% ±1.2 pp	5.6%	8.4%	Not statistically different
Households with a broadband subscription Households	92.2% ±1.5 pp	89.7%	91.0%	Higher
Veterans Civilian population age 18 and older	6.0% ±1.0 pp	6.1%	6.2%	Not statistically different

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 Williamsport . 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 Williamsport housing and cost context or return to the city profile.