Migration to and from St. Martin Parish, Louisiana
Where St. Martin Parish 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
2,001
people moved in (5-yr)
Total outflow
2,775
people moved out (5-yr)
Net migration
-774
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Lafayette Parish | Louisiana | 658 |
| Calcasieu Parish | Louisiana | 329 |
| Vermilion Parish | Louisiana | 213 |
| West Feliciana Parish | Louisiana | 152 |
| St. John the Baptist Parish | Louisiana | 106 |
| Central America | 72 | |
| St. Mary Parish | Louisiana | 65 |
| Iberia Parish | Louisiana | 59 |
| Collier County | Florida | 44 |
| Montgomery County | Texas | 44 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Lafayette Parish | Louisiana | 875 |
| Iberia Parish | Louisiana | 483 |
| St. Mary Parish | Louisiana | 176 |
| St. Tammany Parish | Louisiana | 151 |
| Lafourche Parish | Louisiana | 130 |
| Vermilion Parish | Louisiana | 125 |
| Harris County | Texas | 122 |
| Broward County | Florida | 103 |
| Riverside County | California | 84 |
| St. Louis County | Missouri | 75 |
Explore St. Martin Parish
- Business data for St. Martin ParishConstruction sector establishments, employment, payroll
- Cities in LouisianaACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in LAGovBids: RFPs, awards, NAICS matching
- New business filings in LouisianaNewFilings: 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: 22099.