Oil City, Pennsylvania demographics

Oil City, PA demographics: median age 40.3; 16.5% of adults 25+ hold a bachelor’s degree. Age, race, households, languages and education, ACS 2020–2024 with margins of error.

ACS 2020–2024 · Oil City city, Pennsylvania · Incorporated city · GEOID 4256456. The survey estimates a population of 9,468 for its five-year window. This is separate from the annual July 2025 population estimate on the city overview.

Median age in Oil City is 40.3 years, with a 90% margin of error of 3.8 years. There are 3,908 households (±200). 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	40.3 ±3.8	40.9 ±0.2	38.9 ±0.1

Age groups · B01001 · ACS 2020–2024 Total population: 9,468
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Under 18	2,165 ±261	22.9% ±2.8 pp	20.4%	22.0%
18–34	1,859 ±234	19.6% ±2.5 pp	21.9%	22.8%
35–64	3,600 ±332	38.0% ±3.5 pp	38.1%	38.0%
65 and older	1,844 ±231	19.5% ±2.4 pp	19.5%	17.2%

Sex categories as published by ACS · B01001 · ACS 2020–2024 Total population: 9,468
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Male	4,840 ±215	51.1% ±2.3 pp	49.3%	49.5%
Female	4,628 ±210	48.9% ±2.2 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: 9,468
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
White alone	8,913 ±216	94.1% ±2.2 pp	74.5%	61.0%
Black or African American alone	68 ±39 · low precision	0.7% ±0.4 pp · low precision	10.6%	12.2%
American Indian and Alaska Native alone	12 ±16 · low precision	0.1% ±0.2 pp · low precision	0.2%	0.9%
Asian alone	83 ±80 · low precision	0.9% ±0.8 pp · low precision	3.8%	6.0%
Native Hawaiian and Other Pacific Islander alone	0 ±17 · low precision	0.0% ±0.2 pp · low precision	0.0%	0.2%
Some other race alone	24 ±30 · low precision	0.3% ±0.3 pp · low precision	3.7%	7.1%
Two or more races	368 ±190 · low precision	3.9% ±2.0 pp · low precision	7.1%	12.6%

Hispanic or Latino origin · B03003 · ACS 2020–2024 Total population: 9,468
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Not Hispanic or Latino	9,338 ±70	98.6% ±0.6 pp	91.3%	80.7%
Hispanic or Latino	130 ±54	1.4% ±0.6 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: 3,908
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Married-couple family	1,586 ±172	40.6% ±3.9 pp	46.2%	46.9%
Other family: male householder, no spouse present	275 ±103	7.0% ±2.6 pp	4.7%	5.1%
Other family: female householder, no spouse present	577 ±146	14.8% ±3.7 pp	11.5%	12.2%
Nonfamily: householder living alone	1,269 ±256	32.5% ±6.3 pp	30.9%	28.7%
Nonfamily: householder not living alone	201 ±81	5.1% ±2.1 pp	6.7%	7.0%

Households with children · B11005 · ACS 2020–2024 Households: 3,908
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Households with people under 18	1,275 ±165	32.6% ±3.9 pp	27.0%	29.5%
Households without people under 18	2,633 ±253	67.4% ±5.5 pp	73.0%	70.5%

Household size · B11016 · ACS 2020–2024 Households: 3,908
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
One-person nonfamily households	1,269 ±256	32.5% ±6.3 pp	30.9%	28.7%
Two-person households	1,277 ±216	32.7% ±5.3 pp	34.7%	33.8%
Three-person households	582 ±147	14.9% ±3.7 pp	14.9%	15.3%
Four-person households	318 ±113	8.1% ±2.9 pp	11.7%	12.6%
Five-person households	216 ±101	5.5% ±2.6 pp	5.0%	5.9%
Six-person households	22 ±33 · low precision	0.6% ±0.8 pp · low precision	1.7%	2.2%
Seven or more people	224 ±113 · low precision	5.7% ±2.9 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: 9,468
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Native	9,324 ±108	98.5% ±1.1 pp	92.3%	85.9%
Foreign born	144 ±92 · low precision	1.5% ±1.0 pp · low precision	7.7%	14.1%

Language spoken at home · C16001 · ACS 2020–2024 Population age 5 and older: 9,057
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
English only	8,934 ±167	98.6% ±1.0 pp	87.6%	77.7%
Spanish	28 ±28 · low precision	0.3% ±0.3 pp · low precision	5.6%	13.6%
French, Haitian, or Cajun	11 ±17 · low precision	0.1% ±0.2 pp · low precision	0.5%	0.7%
German or other West Germanic	6 ±10 · low precision	0.1% ±0.1 pp · low precision	0.9%	0.5%
Russian, Polish, or other Slavic	0 ±17 · low precision	0.0% ±0.2 pp · low precision	0.8%	0.7%
Other Indo-European	18 ±31 · low precision	0.2% ±0.3 pp · low precision	1.7%	2.0%
Korean	0 ±17 · low precision	0.0% ±0.2 pp · low precision	0.2%	0.3%
Chinese, including Mandarin and Cantonese	6 ±12 · low precision	0.1% ±0.1 pp · low precision	0.8%	1.1%
Vietnamese	17 ±30 · low precision	0.2% ±0.3 pp · low precision	0.3%	0.5%
Tagalog, including Filipino	0 ±17 · low precision	0.0% ±0.2 pp · low precision	0.2%	0.6%
Other Asian and Pacific Island	37 ±59 · low precision	0.4% ±0.7 pp · low precision	0.7%	1.1%
Arabic	0 ±17 · low precision	0.0% ±0.2 pp · low precision	0.4%	0.5%
Other and unspecified	0 ±17 · low precision	0.0% ±0.2 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: 6,485
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Less than high school graduate	783 ±183	12.1% ±2.8 pp	7.9%	10.4%
High school graduate or equivalency	2,899 ±330	44.7% ±4.8 pp	32.9%	26.0%
Some college, no degree	914 ±193	14.1% ±2.9 pp	15.1%	19.1%
Associate’s degree	822 ±204	12.7% ±3.1 pp	8.9%	8.8%
Bachelor’s degree	658 ±143	10.1% ±2.2 pp	20.9%	21.6%
Graduate or professional degree	409 ±136	6.3% ±2.1 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: 9,363
Category	Count ± MOE	Share ± MOE (pp)	Pennsylvania	U.S.
Same house	7,862 ±471	84.0% ±5.0 pp	89.3%	87.7%
Moved within same county	948 ±423	10.1% ±4.5 pp	5.6%	6.3%
Moved from a different county in the same state	337 ±159	3.6% ±1.7 pp	2.6%	3.1%
Moved from a different state	209 ±110 · low precision	2.2% ±1.2 pp · low precision	1.9%	2.3%
Moved from abroad	7 ±11 · low precision	0.1% ±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

3.7% of Oil City residents (±1.2 percentage points) had no health insurance coverage when surveyed, compared with 5.6% in Pennsylvania and 8.4% nationally. 89.9% 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	Oil City	Pennsylvania	U.S.	Compared with Pennsylvania
People without health insurance Civilian noninstitutionalized population	3.7% ±1.2 pp	5.6%	8.4%	Lower
Households with a broadband subscription Households	89.9% ±1.1 pp	89.7%	91.0%	Not statistically different
Veterans Civilian population age 18 and older	8.9% ±2.0 pp	6.1%	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 Oil City . 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 Oil City housing and cost context or return to the city profile.