Migration to and from Butler County, Pennsylvania
Where Butler County residents came from and where they went over the 5-year window 2016-2020. Census ACS County-to-County Migration Flows, 2020 5-yr (frozen vintage).
Total inflow
9,357
people moved in (5-yr)
Total outflow
8,646
people moved out (5-yr)
Net migration
+711
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Allegheny County | Pennsylvania | 2,538 |
| Beaver County | Pennsylvania | 729 |
| Lawrence County | Pennsylvania | 473 |
| Mercer County | Pennsylvania | 362 |
| Westmoreland County | Pennsylvania | 331 |
| Armstrong County | Pennsylvania | 186 |
| Venango County | Pennsylvania | 129 |
| Cambria County | Pennsylvania | 128 |
| Chester County | Pennsylvania | 118 |
| Horry County | South Carolina | 113 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Allegheny County | Pennsylvania | 1,373 |
| Indiana County | Pennsylvania | 487 |
| Beaver County | Pennsylvania | 484 |
| Erie County | Pennsylvania | 350 |
| Wayne County | Michigan | 298 |
| Armstrong County | Pennsylvania | 284 |
| Mercer County | Pennsylvania | 279 |
| Clarion County | Pennsylvania | 244 |
| Chester County | Pennsylvania | 232 |
| Lawrence County | Pennsylvania | 206 |
Explore Butler County
- Business data for Butler CountyConstruction sector establishments, employment, payroll
- Cities in PennsylvaniaACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in PAGovBids: RFPs, awards, NAICS matching
- New business filings in PennsylvaniaNewFilings: fresh SOS registrations
Methodology
- Counts represent the number of people aged 1+ who reported a different residence at the survey reference date than they did one year earlier, aggregated across the 5-year sample window 2016-2020.
- Outbound (OUT) flows are reported less frequently than inbound (IN) because the survey captures the destination side of each move. Many county pairs have null OUT counts, which is normal.
- "Total inflow" sums the published MOVEDIN counts across all origin counties, including foreign-region inflows (Africa, Asia, Central America, etc.). It is not the same as net population change.
- Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.
Source: U.S. Census Bureau, American Community Survey, County-to-County Migration Flows: 2016-2020. Vintage: 2020 5-yr. Generated: 2026-05-28. FIPS: 42019.