Demographics of Jefferson County, Pennsylvania

Jefferson County, Pennsylvania had 43,255 people on July 1, 2025, by the Census Bureau’s estimate: −1,233 since July 2020. Age, income, poverty, housing and origin below come from the American Community Survey, averaged over 2020–2024, each with its margin of error.

Jefferson County, in four figures

43,255
Population: July 1, 2025, Vintage 2025 estimate.; −2.8%
Change since July 2020: −1,233 people.; 44.0 ±0.3
Median age: ACS 2020–⁠2024.; $58,686 ±$2,154
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. Each year's change is births less deaths, net moves from abroad and net moves from elsewhere in the country, with the Bureau's small residual. The 2020 row's components run 3 months, from the April census to July 1.

Jefferson County, Pennsylvania's population shrank 2.8% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Jefferson County, Pennsylvania's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — counties and Puerto Rico municipios, with components of change

About this chart

The figures

Jefferson County, Pennsylvania's population shrank 2.8% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Jefferson County, Pennsylvania's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	44,488	100.0	100.0
2021	44,132	99.2	100.2
2022	43,731	98.3	100.7
2023	43,637	98.1	101.6
2024	43,340	97.4	102.5
2025	43,255	97.2	103.1

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Population of Jefferson County, Pennsylvania on July 1 of each year, Vintage 2025
July 1	Population	Change	Births less deaths	From abroad	From elsewhere in the country
2020	44,488	−13	−3	0	−18
2021	44,132	−356	−223	+2	−167
2022	43,731	−401	−231	+5	−153
2023	43,637	−94	−149	+16	+50
2024	43,340	−297	−166	+12	−138
2025	43,255	−85	−173	+10	+80

Age, 2020–2024

The median age is 44.0 ±0.3: for men 43.1 ±0.4 and for women 44.8 ±0.3. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Jefferson County by age, ACS 2020–2024
Age	People	Share	Pennsylvania	United States
Under 5	2,343 ±54	5.3% ±0.1	5.2% ±<0.1	5.6% ±<0.1
5 to 17	7,022 ±264	16.0% ±0.6	15.2% ±0.1	16.3% ±<0.1
18 to 24	3,123 ±184	7.1% ±0.4	9.0% ±<0.1	9.1% ±<0.1
25 to 44	9,896 ±234	22.6% ±0.5	25.5% ±0.1	26.9% ±<0.1
45 to 64	11,723 ±269	26.7% ±0.6	25.6% ±0.1	24.8% ±<0.1
65 and over	9,757 ±344	22.2% ±0.8	19.5% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $58,686 ±$2,154, and income per person $32,564 ±$1,028, in 2024 dollars. The median is $77,971 ±$342 in Pennsylvania and $80,734 ±$166 in the United States.

Households by income

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Households in Jefferson County by income, ACS 2020–2024
Household income	Households	Share	Pennsylvania	United States
Under $25,000	3,568 ±341	19.5% ±1.8	15.1% ±0.1	14.6% ±<0.1
$25,000 to $49,999	4,286 ±313	23.4% ±1.7	17.4% ±0.1	16.7% ±<0.1
$50,000 to $74,999	3,411 ±240	18.6% ±1.3	15.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	2,535 ±252	13.8% ±1.4	12.8% ±0.1	12.6% ±<0.1
$100,000 to $149,999	2,771 ±229	15.1% ±1.2	17.7% ±0.1	17.5% ±<0.1
$150,000 to $199,999	1,029 ±117	5.6% ±0.6	9.3% ±0.1	9.6% ±<0.1
$200,000 or more	744 ±130	4.1% ±0.7	11.8% ±0.1	13.4% ±0.1

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Jefferson County by age, ACS 2020–2024
Age	Below poverty	Rate	Pennsylvania	United States
All ages	6,081 ±704	14.1% ±1.6	11.7% ±0.1	12.5% ±0.1
Under 18	1,800 ±295	19.6% ±3.1	15.6% ±0.2	16.1% ±0.1
18 to 59	2,643 ±316	12.6% ±1.5	11.0% ±0.2	11.6% ±0.1
60 and over	1,638 ±186	12.7% ±1.4	10.1% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Jefferson County, ACS 2020–2024
Measure	Jefferson County	Pennsylvania	United States
Housing units	22,085 ±68	5,806,452 ±672	143,775,355 ±10,234
Occupied	83.1% ±0.9	90.8% ±0.2	89.9% ±0.1
Vacant	16.9% ±0.9	9.2% ±0.2	10.1% ±0.1
Owner occupied	74.9% ±1.4	69.3% ±0.3	65.2% ±0.3
Renter occupied	25.1% ±1.7	30.7% ±0.2	34.8% ±0.1
Median home value	$139,700 ±$6,702	$254,500 ±$767	$332,700 ±$236
Median gross rent	$750 ±$39	$1,209 ±$5	$1,413 ±$2
Median year built	1961 ±2	1965 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Jefferson County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Pennsylvania	United States
Hispanic or Latino	446 ±0	1.0% ±<0.1	8.7% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	41,871 ±167	95.5% ±0.4	73.0% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	137 ±59	0.3% ±0.1	10.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	110 ±50	0.3% ±0.1	3.8% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	2 to 42	< 0.1% to 0.1%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 25	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	73 to 221	0.2% to 0.5%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,131 ±152	2.6% ±0.3	3.6% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Jefferson County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Pennsylvania	United States
Born in the state	38,319 ±411	87.4% ±0.9	70.6% ±0.1	57.3% ±<0.1
Born in another state	5,146 ±412	11.7% ±0.9	19.8% ±0.1	26.9% ±<0.1
Born a citizen outside the states	210 ±85	0.5% ±0.2	1.9% ±<0.1	1.7% ±<0.1
Born abroad	189 ±58	0.4% ±0.1	7.7% ±0.1	14.1% ±<0.1
Naturalized citizens	25 to 97	0.1% to 0.2%	4.3% ±0.1	7.4% ±<0.1
Not citizens	128 ±56	0.3% ±0.1	3.4% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Jefferson County among the counties of Pennsylvania

48th of 67 by population, July 2025. Every one is listed on the Pennsylvania page.

Counties of Pennsylvania near Jefferson County in population, July 2025
County	July 2025	Change since 2020
Wayne County	51,703	+1.1%
Venango County	49,346	−2.0%
Bedford County	47,480	−0.2%
Perry County	46,806	+2.1%
Mifflin County	46,127	> −0.1%
Jefferson County	43,255	−2.8%
Huntingdon County	43,001	−2.4%
Union County	42,313	−0.8%
Tioga County	40,502	−1.3%
Snyder County	39,655	−0.2%
McKean County	38,984	−3.5%

Elsewhere on the site

Sources

Census Bureau population estimates — counties and Puerto Rico municipios, with components of change — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026