Population
46,127
2025
−0.0% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
Mifflin County had an estimated 46,127 residents in 2025, down 0.0% (17 fewer people) since 2020. That is slower than Pennsylvania as a whole (+0.5%), and the 27th fastest growth of 67 counties in Pennsylvania.
Data as of 2025 · updated
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46,127
2025
−0.0% since 2020
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. Resident population, July 1 estimate.
+124
2025
2.7 per 1,000 residents
+346 in total, 2021–2025
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2025), 2025. People moving in from other U.S. counties minus people moving out.
3.9%
2025
−0.4 pts since 2019
Source: U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics, 2025. Annual average unemployment rate.
54
2025
−40.7% since 2021
1.2 per 1,000 residents
Source: U.S. Census Bureau, Building Permits Survey, 2025. Housing units authorized by building permits in the year.
$63,953
2020–24
+21.5% since 2016–20
Source: U.S. Census Bureau, American Community Survey 5-year estimates, 2020–24. American Community Survey 5-year estimate.
14,987
2023
+0.8% since 2018
Source: U.S. Census Bureau, County Business Patterns, 2023. Paid employees of private employers in mid-March (County Business Patterns).
Net domestic migration added 124 people in 2025: more people moved in from other U.S. counties than moved out.
Private employers had 14,987 paid employees in mid-March 2023, +0.8% since 2018 (County Business Patterns).
Unemployment averaged 3.9% in 2025, 0.4 points lower than in 2019 (before the pandemic).
Builders were authorized to start 54 new homes in 2025, or 1.2 per 1,000 residents.
Median household income was $63,953 in the 2020–24 American Community Survey, +21.5% since 2016–20.
Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 1,886th.
Part of the Lewistown, PA micro area.
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| Year | Population | Change |
|---|---|---|
| 2025 | 46,127 | +104 |
| 2024 | 46,023 | +47 |
| 2023 | 45,976 | −17 |
| 2022 | 45,993 | −195 |
| 2021 | 46,188 | +44 |
| 2020 | 46,144 | – |
Census Bureau population estimates, July 1 of each year.
Mifflin County lost 17 people since 2020 even though 346 more people moved in from other U.S. counties than left: deaths outnumbered births by 382, and net international migration added 32.
| Component | 2025 | 2020–25 | Share |
|---|---|---|---|
| Natural changebirths minus deaths | −23 | −382 | |
| International migrationfrom and to other countries | +2 | +32 | |
| Domestic migrationfrom and to other U.S. counties | +124 | +346 | |
| Census adjustmentbalancing residual | +1 | −13 | |
| Total change | +104 | −17 |
Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.
| Measure | In Pennsylvania | Among U.S. counties |
|---|---|---|
| Population growth | 27th of 67 | 1,886th of 3,107 |
| Net domestic migration per 1,000 residents | 25th of 67 | 1,441st of 3,108 |
| Private-sector job growth | 29th of 67 | 1,759th of 3,092 |
| Median household income | 41st of 67 | 1,689th of 3,107 |
| Lowest unemployment rate | 13th of 67 | 1,471st of 3,108 |
| New homes permitted per 1,000 residents | 40th of 67 | 1,983rd of 3,005 |
1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.
The County Growth and Demographics Report for Mifflin County, PA as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.
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Mifflin County's population change was stronger than in all 5 of its neighbouring counties (−0.0%, 2020–25).
Its median household income ($63,953, 2020–24) is lower than in all 5 of its neighbouring counties.
| County | Population2025 | Population change2020–25 | Net domestic migration per 1,000 residents2025 | Homes permitted per 1,000 residents2025 | Median household income2020–24 |
|---|---|---|---|---|---|
| Mifflin County, PA This county | 46,127 | −0.0% | 2.7 | 1.2 | $63,953 |
| Juniata County, PA | 23,403 | −0.3% | −4.4 | 1.3 | $66,318 |
| Centre County, PA | 157,393 | −0.4% | −11.6 | 2.0 | $74,291 |
| Huntingdon County, PA | 43,001 | −2.4% | −6.5 | 1.5 | $65,557 |
| Snyder County, PA | 39,655 | −0.2% | −2.1 | 1.7 | $66,876 |
| Union County, PA | 42,313 | −0.8% | −7.5 | 1.5 | $76,404 |
Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
Its population was about flat between 2020 and 2025 (−0.0%; Census Bureau population estimates). Pennsylvania as a whole changed +0.5% over the same years. That ranks 27th of 67 counties in Pennsylvania for population growth.
On net, about 124 people in 2025: that many more moved in from other U.S. counties than moved out (Census Bureau net domestic migration estimate).
It averaged 3.9% in 2025 (BLS Local Area Unemployment Statistics, annual average).
About 46,127 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.
Private employers there had 14,987 paid employees in mid-March 2023, +0.8% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).
Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Pennsylvania county pages carry the public federal growth figures.
Email me when Mifflin County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.
Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.