County facts · Population growth · October 23, 2026
Fastest Growing Parishes in Louisiana, 2020 to 2025
Louisiana's fastest growing parishes by percent and by people added, April 2020 to July 2025 Census estimates, with each official parcel map.
Looking for the fastest growing parishes in Louisiana? From the Census Bureau's April 1, 2020 estimates base to its July 1, 2025 estimate, Louisiana went from about 4,657,894 to 4,618,189 residents, a change of −39,705 (−0.9%). The fastest growing parish by percentage was Livingston Parish (+9.0%), while Lafayette Parish added the most people (+16,179, +6.7%).
Each table links the parish's Platbookmapper page and its official parcel viewer, so you can go from the growth numbers straight to the property lines.
Louisiana growth at a glance
- Parishes: 64
- Statewide, April 2020 to July 2025: −39,705 residents (−0.9%); July 2024 to July 2025 alone: +3,311 (+0.1%)
- Grew: 14 of 64 · Lost residents: 50
- Fastest growing by percent: Livingston Parish (+9.0%); most people added: Lafayette Parish (+16,179)
- Parishes with more deaths than births over the period: 39 of 64
The 10 fastest growing Louisiana parishes by percent
| # | Parish | Apr 2020 | Jul 2025 | Change | % change | Parcel viewer |
|---|---|---|---|---|---|---|
| 1 | Livingston Parish | 142,287 | 155,036 | +12,749 | +9.0% | GeoPortal Maps |
| 2 | Winn Parish | 13,753 | 14,961 | +1,208 | +8.8% | parish web map |
| 3 | Ascension Parish | 126,499 | 135,105 | +8,606 | +6.8% | ArcGIS Experience Builder |
| 4 | Lafayette Parish | 241,770 | 257,949 | +16,179 | +6.7% | Beacon (Schneider Geospatial) |
| 5 | Tangipahoa Parish | 133,166 | 141,346 | +8,180 | +6.1% | parish web map |
| 6 | West Baton Rouge Parish | 27,204 | 28,756 | +1,552 | +5.7% | parish web map |
| 7 | St. Tammany Parish | 264,565 | 279,108 | +14,543 | +5.5% | GeoPortal Maps |
| 8 | Jackson Parish | 15,032 | 15,834 | +802 | +5.3% | no verified public viewer listed yet |
| 9 | St. Bernard Parish | 43,765 | 45,642 | +1,877 | +4.3% | ArcGIS Map Viewer |
| 10 | Bossier Parish | 128,655 | 131,867 | +3,212 | +2.5% | GeoPortal Maps |
These 10 added about 68,908 people combined. The median parish changed by −2.5%.
The 10 parishes that added the most people
| # | Parish | People added | % change | Jul 2025 | Parcel viewer |
|---|---|---|---|---|---|
| 1 | Lafayette Parish | +16,179 | +6.7% | 257,949 | Beacon (Schneider Geospatial) |
| 2 | St. Tammany Parish | +14,543 | +5.5% | 279,108 | GeoPortal Maps |
| 3 | Livingston Parish | +12,749 | +9.0% | 155,036 | GeoPortal Maps |
| 4 | Ascension Parish | +8,606 | +6.8% | 135,105 | ArcGIS Experience Builder |
| 5 | Tangipahoa Parish | +8,180 | +6.1% | 141,346 | parish web map |
| 6 | Bossier Parish | +3,212 | +2.5% | 131,867 | GeoPortal Maps |
| 7 | St. Bernard Parish | +1,877 | +4.3% | 45,642 | ArcGIS Map Viewer |
| 8 | West Baton Rouge Parish | +1,552 | +5.7% | 28,756 | parish web map |
| 9 | Winn Parish | +1,208 | +8.8% | 14,961 | parish web map |
| 10 | Jackson Parish | +802 | +5.3% | 15,834 | no verified public viewer listed yet |
The top 10 account for about 98% of all the gains in the parishes that grew.
Where the new residents came from
The Census Bureau splits each change into natural change (births minus deaths), net domestic migration (moves from other parts of the US) and net international migration. Totals for April 2020 to July 2025 in the five fastest growing parishes:
| Parish | Births minus deaths | Net domestic moves | Net international moves | Total change |
|---|---|---|---|---|
| Livingston Parish | +2,026 | +8,628 | +2,145 | +12,749 |
| Winn Parish | −437 | −503 | +2,148 | +1,208 |
| Ascension Parish | +3,316 | +3,180 | +2,063 | +8,606 |
| Lafayette Parish | +5,174 | +5,153 | +5,740 | +16,179 |
| Tangipahoa Parish | +1,496 | +5,743 | +905 | +8,180 |
In 2 of these 5, moves from elsewhere in the US were the biggest source of growth. The three parts do not add up exactly to the total because the Census Bureau also carries a small residual.
The last year alone: July 2024 to July 2025
- Winn Parish: +1.3% (+195)
- Lafayette Parish: +1.3% (+3,275)
- Livingston Parish: +1.2% (+1,891)
- Tangipahoa Parish: +1.0% (+1,363)
- Ascension Parish: +0.8% (+1,078)
5 of these 5 are also in the 2020–2025 top 10, so the growth is not a one-year blip.
Parishes losing residents
50 of Louisiana's 64 parishes had fewer residents in July 2025 than in April 2020. The steepest declines:
- Cameron Parish: −16.0% (−898, now about 4,718)
- Madison Parish: −11.7% (−1,174, now about 8,844)
- Tensas Parish: −10.8% (−448, now about 3,700)
- East Carroll Parish: −9.4% (−700, now about 6,760)
- Catahoula Parish: −7.7% (−683, now about 8,223)
What fast growth means on a parcel map
- New lots show up as plats first. When land is subdivided, the plat is recorded with the parish and the parcel layer catches up on its own schedule, so a brand-new lot may not appear on the map for a while. Check the recorder's recent plats if a parcel looks missing.
- Parcel numbers change after splits. A tract that was one parcel last year can be several today. Search by owner name or address as well as by an old parcel number.
- City limits move. Growing cities annex land, which changes who handles zoning and permits even though the parish still keeps the deed and the tax map.
- Percent is not the same as people. A small parish can post a big percentage on a modest number of new residents, so read the people-added column too.
Related guides
- Largest parishes in Louisiana
- Louisiana parish GIS websites by viewer
- Louisiana landowner maps for hunting
- Fastest growing counties in the US
- US counties losing population
More: All Louisiana parishes on Platbookmapper
Sources
- U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2025 (April 1, 2020 estimates base and July 1, 2020–2025 estimates, with components of change). Percent change is from the April 1, 2020 estimates base to the July 1, 2025 estimate.
- Platbookmapper county GIS directory (live data file behind our county pages, pulled October 23, 2026) for each official parcel viewer.