What are the fastest-growing parishes in Louisiana?
Winn Parish is the fastest-growing parish in Louisiana: its population grew 1.75% a year from 2020 to 2025, to 14,961 residents (Census PEP Vintage 2025). Livingston Parish (1.65%) and Lafayette Parish (1.27%) follow. Louisiana as a whole grew -0.15% a year to 4,618,189 residents.
Data as of 2026-09-23. Population, growth and migration: PEP Vintage 2025 · 2020–2025. Income migration: IRS SOI 2022–2023 (2-yr lag).
Top 10 parishes in Louisiana by population growth, 2020 to 2025
| Rank | Parish | Population | Growth (% per year) | Net domestic migration | Net international migration | IRS net AGI migration |
|---|---|---|---|---|---|---|
| 1 | Winn Parish | 14,961 | 1.75% | -496 | +2,148 | -$1.0M |
| 2 | Livingston Parish | 155,036 | 1.65% | +8,171 | +2,143 | +$13.3M |
| 3 | Lafayette Parish | 257,949 | 1.27% | +5,022 | +5,729 | +$43.7M |
| 4 | Ascension Parish | 135,105 | 1.25% | +2,870 | +2,058 | -$10.0M |
| 5 | Tangipahoa Parish | 141,346 | 1.13% | +5,333 | +904 | +$15.4M |
| 6 | Jackson Parish | 15,834 | 1.09% | -31 | +1,343 | +$3.5M |
| 7 | West Baton Rouge Parish | 28,756 | 1.07% | +851 | +286 | -$0.9M |
| 8 | St. Tammany Parish | 279,108 | 1.04% | +9,975 | +3,849 | +$52.9M |
| 9 | St. Bernard Parish | 45,642 | 0.80% | +9 | +1,205 | -$6.1M |
| 10 | Bossier Parish | 131,867 | 0.50% | -919 | +2,643 | -$10.6M |
Where are people moving in Louisiana?
St. Tammany Parish gained the most people from elsewhere in the United States: net domestic migration of +9,975 from 2020 to 2025 (Census PEP Vintage 2025). The table ranks every Louisiana place with 10,000 or more residents by that figure; the IRS column shows net adjusted gross income migration for 2022 to 2023.
| Rank | Parish | Population | Growth (% per year) | Net domestic migration | Net international migration | IRS net AGI migration |
|---|---|---|---|---|---|---|
| 1 | St. Tammany Parish | 279,108 | 1.04% | +9,975 | +3,849 | +$52.9M |
| 2 | Livingston Parish | 155,036 | 1.65% | +8,171 | +2,143 | +$13.3M |
| 3 | Tangipahoa Parish | 141,346 | 1.13% | +5,333 | +904 | +$15.4M |
| 4 | Lafayette Parish | 257,949 | 1.27% | +5,022 | +5,729 | +$43.7M |
| 5 | Ascension Parish | 135,105 | 1.25% | +2,870 | +2,058 | -$10.0M |
| 6 | West Baton Rouge Parish | 28,756 | 1.07% | +851 | +286 | -$0.9M |
| 7 | De Soto Parish | 27,381 | 0.40% | +619 | +11 | +$6.8M |
| 8 | Vermilion Parish | 57,671 | 0.25% | +245 | +466 | +$2.8M |
| 9 | West Feliciana Parish | 15,134 | -0.15% | +158 | +25 | +$4.1M |
| 10 | Sabine Parish | 21,834 | -0.24% | +99 | +15 | -$0.1M |
Go past the headline numbers
The interactive Demographics map layer and the full report for a single place are part of paid plans.
Get the Demographics Report for Winn ParishFrequently asked questions
- What are the fastest-growing parishes in Louisiana?
- By population growth from 2020 to 2025, the fastest are Winn Parish (1.75% a year), Livingston Parish (1.65% a year), Lafayette Parish (1.27% a year), Ascension Parish (1.25% a year) and Tangipahoa Parish (1.13% a year) (Census PEP Vintage 2025). Only places with 10,000 or more residents are ranked.
- Where are people moving in Louisiana?
- By net domestic migration from 2020 to 2025, the largest gains are St. Tammany Parish (+9,975), Livingston Parish (+8,171) and Tangipahoa Parish (+5,333) (Census PEP Vintage 2025).
- How fast is Louisiana growing overall?
- Louisiana grew -0.15% a year from 2020 to 2025, to 4,618,189 residents, with net migration of -48,081 people (Census PEP Vintage 2025).
- Where does this Louisiana data come from, and how current is it?
- Population, growth and migration come from the U.S. Census Bureau Population Estimates Program (PEP Vintage 2025 · 2020–2025). Income migration comes from IRS Statistics of Income (IRS SOI 2022–2023 (2-yr lag)). Parishes with fewer than 10,000 residents are not ranked (8 of 64 in Louisiana). Data last loaded 2026-09-23.
Data as of 2026-09-23: sources and periods
- Population, growth and migration
- U.S. Census Bureau, Population Estimates Program: PEP Vintage 2025 · 2020–2025. census.gov/programs-surveys/popest
- Income migration (net AGI)
- Internal Revenue Service, Statistics of Income migration data: IRS SOI 2022–2023 (2-yr lag). irs.gov/statistics/soi-tax-stats-migration-data
How to read the table
- Population is the Census July 1 estimate of the latest vintage.
- Growth is the compound annual rate over 2020 to 2025.
- Net domestic and international migration are cumulative people over 2020 to 2025.
- IRS net AGI migration is adjusted gross income that moved in, less what moved out, for 2022 to 2023. A plus sign means a net inflow.
- Places with fewer than 10,000 residents are left out of the rankings.