Jefferson Davis Parish, Louisiana: Power, Data Centers and the Local Economy
Home to Jennings, Welsh and Lake Arthur
No data center or power plant project is on record in Jefferson Davis Parish, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Jefferson Davis Parish is home to Jennings, Welsh, Lake Arthur and Elton. Next door, Calcasieu Parish has 819 MW of planned generation. Construction employs 440, up 7.6% since 2019. Employers here counted 7,936 jobs in 2025, down 4.6% from 2019. Unemployment was 3.8% in August 2026, against 4.4% in 2019.
Cities and towns in Jefferson Davis Parish
Jefferson Davis Parish is home to Jennings, Welsh, Lake Arthur and Elton.
Unincorporated communities (governed by the county): Lacassine, Roanoke.
Residents are 2025 Census estimates for the part of each city, town or township inside this county. Census publishes no annual estimate for unincorporated communities.
What changed in Jefferson Davis Parish
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Louisiana |
|---|---|---|---|---|
| Population (2020 → 2025) | 32,237 | 31,471 | ▼ 2.4% | 33rd of 64 by size |
| Total jobs (2019 → 2025) | 8,315 | 7,936 | ▼ 4.6% | 50th of 64 by growth |
| Average annual pay (2019 → 2025) | $37,591 | $45,559 | ▲ 21.2% | — |
| Construction jobs (2019 → 2025) | 409 | 440 | ▲ 7.6% | 25th of 43 by growth |
| Unemployment rate (2019 → August 2026) | 4.4% | 3.8% | ▼ 0.6pts | — |
Entergy Louisiana LLC is the largest utility serving Jefferson Davis Parish, one of 5 with territory here. Its residential customers paid an average 11.05¢/kWh in 2024, below the 11.88¢ median for Louisiana utilities. 31,471 people live here, down 2.4% since 2020.
Who powers Jefferson Davis Parish
Utilities with service territory in Jefferson Davis Parish
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Entergy Louisiana LLC | Investor Owned | Bundled | 957,522 | 11.05¢ | 20% |
| Cleco Power LLC | Investor Owned | Bundled | 251,927 | 12.33¢ | 32% |
| Beauregard Electric Coop, Inc | Cooperative | Bundled | 40,051 | 13.70¢ | 12% |
| Jefferson Davis Elec Coop, Inc | Cooperative | Bundled | 9,127 | 14.05¢ | 16% |
| Town of Welsh - (LA) | — | — | — | — | — |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
No operating power plant is located in Jefferson Davis Parish in the EIA-860M inventory. Its power comes over the grid from plants elsewhere.
The Jefferson Davis Parish labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 7,936 | $45,559 | 1.00 |
| Construction | 440 | $54,085 | 1.05 |
Concentration is the BLS location quotient: 1.0 means the industry holds the same share of local jobs as it does nationally. Industry rows count private employers; cells BLS suppresses are left out.
Data centers and local rules in Jefferson Davis Parish
No data center, local measure or delayed project is on record in Jefferson Davis Parish. Louisiana has 3 local measures on record statewide.
Jefferson Davis Parish and its neighbors
Of the 7 counties that border Jefferson Davis Parish, Calcasieu Parish carries the most build-out activity: data centers, planned generation and operating plants combined.
| County | Population | Jobs since 2019 | Operating MW | Planned MW | Data centers | Local measures |
|---|---|---|---|---|---|---|
| Jefferson Davis Parish | 31,471 | ▼ 4.6% | — | — | — | — |
| Acadia Parish | 57,032 | ▲ 3.5% | 1,818 MW | 150 MW | — | — |
| Allen Parish | 22,672 | ▼ 5.5% | 143 MW | — | — | — |
| Beauregard Parish | 36,673 | ▲ 7.5% | 62 MW | 300 MW | — | — |
| Calcasieu Parish | 208,466 | ▼ 12.2% | 4,016 MW | 819 MW | — | — |
| Cameron Parish | 4,718 | ▼ 49.5% | — | — | — | — |
| Evangeline Parish | 31,980 | ▲ 6.1% | 923 MW | — | — | — |
| Vermilion Parish | 57,671 | ▲ 2.1% | — | — | — | — |
More of Louisiana
Jefferson Davis Parish, answered from the record
Who provides electricity in Jefferson Davis Parish, Louisiana?
5 utilities have service territory in Jefferson Davis Parish in the EIA-861 2024 report: Entergy Louisiana LLC, Cleco Power LLC, Beauregard Electric Coop, Inc, Jefferson Davis Elec Coop, Inc. The largest, Entergy Louisiana LLC, charged residential customers 11.05¢/kWh on average in 2024.
Are there data centers in Jefferson Davis Parish?
The SAVRN Data Center Map has no data center in Jefferson Davis Parish. The nearest activity on record is next door in Calcasieu Parish.
Is Jefferson Davis Parish adding jobs?
Employers counted 7,936 jobs in 2025 against 8,315 in 2019 (-4.6%, BLS QCEW). Construction went from 409 to 440.
Does Jefferson Davis Parish have a data center moratorium?
No county-level measure is on record for Jefferson Davis Parish. Louisiana has 3 local measures statewide, listed on the state page.