Demographics of Mifflin County, Pennsylvania

Mifflin County, Pennsylvania had 46,127 people on July 1, 2025, by the Census Bureau’s estimate: −17 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.

Mifflin County, in four figures

46,127
Population: July 1, 2025, Vintage 2025 estimate.; > −0.1%
Change since July 2020: −17 people.; 43.4 ±0.4
Median age: ACS 2020–⁠2024.; $63,953 ±$3,171
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.

Mifflin County, Pennsylvania's population shrank < 0.1% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Mifflin 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

Mifflin County, Pennsylvania's population shrank < 0.1% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Mifflin 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	46,144	100.0	100.0
2021	46,188	100.1	100.2
2022	45,993	99.7	100.7
2023	45,976	99.6	101.6
2024	46,023	99.7	102.5
2025	46,127	100.0	103.1

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Population of Mifflin 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	46,144	+6	+8	0	−14
2021	46,188	+44	−190	+5	+192
2022	45,993	−195	−122	+7	−45
2023	45,976	−17	−32	+13	+14
2024	46,023	+47	−15	+5	+61
2025	46,127	+104	−23	+2	+124

Age, 2020–2024

The median age is 43.4 ±0.4: for men 42.9 ±0.5 and for women 44.0 ±0.6. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Mifflin County by age, ACS 2020–2024
Age	People	Share	Pennsylvania	United States
Under 5	2,859 ±57	6.2% ±0.1	5.2% ±<0.1	5.6% ±<0.1
5 to 17	7,569 ±345	16.4% ±0.7	15.2% ±0.1	16.3% ±<0.1
18 to 24	3,199 ±280	6.9% ±0.6	9.0% ±<0.1	9.1% ±<0.1
25 to 44	10,141 ±428	22.0% ±0.9	25.5% ±0.1	26.9% ±<0.1
45 to 64	12,143 ±444	26.4% ±1.0	25.6% ±0.1	24.8% ±<0.1
65 and over	10,130 ±518	22.0% ±1.1	19.5% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $63,953 ±$3,171, and income per person $31,620 ±$1,136, 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 Mifflin County by income, ACS 2020–2024
Household income	Households	Share	Pennsylvania	United States
Under $25,000	3,028 ±373	16.4% ±2.0	15.1% ±0.1	14.6% ±<0.1
$25,000 to $49,999	4,104 ±377	22.2% ±2.0	17.4% ±0.1	16.7% ±<0.1
$50,000 to $74,999	3,512 ±378	19.0% ±2.0	15.9% ±0.1	15.5% ±<0.1
$75,000 to $99,999	3,175 ±394	17.2% ±2.1	12.8% ±0.1	12.6% ±<0.1
$100,000 to $149,999	3,087 ±367	16.7% ±1.9	17.7% ±0.1	17.5% ±<0.1
$150,000 to $199,999	1,054 ±222	5.7% ±1.2	9.3% ±0.1	9.6% ±<0.1
$200,000 or more	550 ±141	3.0% ±0.8	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 Mifflin County by age, ACS 2020–2024
Age	Below poverty	Rate	Pennsylvania	United States
All ages	7,360 ±1,075	16.2% ±2.4	11.7% ±0.1	12.5% ±0.1
Under 18	2,988 ±478	28.9% ±4.2	15.6% ±0.2	16.1% ±0.1
18 to 59	3,149 ±520	14.2% ±2.3	11.0% ±0.2	11.6% ±0.1
60 and over	1,223 ±207	9.5% ±1.6	10.1% ±0.2	11.0% ±<0.1

Housing, 2020–2024

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Housing in Mifflin County, ACS 2020–2024
Measure	Mifflin County	Pennsylvania	United States
Housing units	21,468 ±52	5,806,452 ±672	143,775,355 ±10,234
Occupied	86.2% ±1.8	90.8% ±0.2	89.9% ±0.1
Vacant	13.8% ±1.8	9.2% ±0.2	10.1% ±0.1
Owner occupied	71.1% ±2.2	69.3% ±0.3	65.2% ±0.3
Renter occupied	28.9% ±2.0	30.7% ±0.2	34.8% ±0.1
Median home value	$156,700 ±$4,766	$254,500 ±$767	$332,700 ±$236
Median gross rent	$822 ±$47	$1,209 ±$5	$1,413 ±$2
Median year built	1960 ±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 Mifflin County by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Pennsylvania	United States
Hispanic or Latino	1,050 ±0	2.3% ±<0.1	8.7% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	42,953 ±356	93.3% ±0.8	73.0% ±<0.1	57.4% ±<0.1
Black alone, not Hispanic	449 ±111	1.0% ±0.2	10.3% ±<0.1	11.9% ±<0.1
Asian alone, not Hispanic	66 to 226	0.1% to 0.5%	3.8% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	4 to 78	< 0.1% to 0.2%	0.1% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 62	0% to 0.1%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	12 to 96	< 0.1% to 0.2%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	1,324 ±365	2.9% ±0.8	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 Mifflin County by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Pennsylvania	United States
Born in the state	41,333 ±533	89.8% ±1.2	70.6% ±0.1	57.3% ±<0.1
Born in another state	3,832 ±481	8.3% ±1.0	19.8% ±0.1	26.9% ±<0.1
Born a citizen outside the states	316 ±149	0.7% ±0.3	1.9% ±<0.1	1.7% ±<0.1
Born abroad	560 ±188	1.2% ±0.4	7.7% ±0.1	14.1% ±<0.1
Naturalized citizens	317 ±133	0.7% ±0.3	4.3% ±0.1	7.4% ±<0.1
Not citizens	93 to 393	0.2% to 0.9%	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%.

Mifflin County among the counties of Pennsylvania

47th of 67 by population, July 2025. Every one is listed on the Pennsylvania page.

Counties of Pennsylvania near Mifflin County in population, July 2025
County	July 2025	Change since 2020
Bradford County	59,600	−0.6%
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%

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