Migration to and from Williamson County, Texas
Where Williamson 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
58,644
people moved in (5-yr)
Total outflow
33,945
people moved out (5-yr)
Net migration
+24,699
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Travis County | Texas | 16,454 |
| Asia | 1,954 | |
| Tarrant County | Texas | 1,838 |
| Harris County | Texas | 1,665 |
| Santa Clara County | California | 1,489 |
| Bexar County | Texas | 1,357 |
| Bell County | Texas | 1,108 |
| Central America | 915 | |
| Hays County | Texas | 839 |
| Los Angeles County | California | 727 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Travis County | Texas | 10,828 |
| Bell County | Texas | 1,695 |
| Harris County | Texas | 1,413 |
| Dallas County | Texas | 806 |
| Bexar County | Texas | 692 |
| Collin County | Texas | 688 |
| Tarrant County | Texas | 686 |
| Burnet County | Texas | 677 |
| Hays County | Texas | 625 |
| Maricopa County | Arizona | 470 |
Explore Williamson County
- Business data for Williamson CountyConstruction sector establishments, employment, payroll
- Cities in TexasACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in TXGovBids: RFPs, awards, NAICS matching
- New business filings in TexasNewFilings: 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: 48491.