St. Clair County, Alabama: Power, Data Centers and the Local Economy
Home to Pell City, Moody and Margaret
St. Clair County is not a build-out site today. It feels the boom through the grid it shares, the utilities that serve it and the work nearby. St. Clair County is home to Pell City, Moody, Margaret and Odenville. Next door, Jefferson County has 8 data centers. Employers here counted 22,380 jobs in 2025, up 11.6% from 2019 (the 8th fastest growth of 67 Alabama counties). Alabama Power Co is the largest utility serving St. Clair County, one of 2 with territory here. Its residential customers paid an average 16.77¢/kWh in 2024, above the 13.24¢ median for Alabama utilities. Unemployment was 3.2% in August 2026, against 2.8% in 2019.
Cities and towns in St. Clair County
St. Clair County is home to Pell City, Moody, Margaret and Odenville.
- Leeds also extends into Jefferson County.
- Trussville also extends into Jefferson County.
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 St. Clair County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Alabama |
|---|---|---|---|---|
| Population (2020 → 2025) | 91,703 | 98,206 | ▲ 7.1% | 15th of 67 by size |
| Total jobs (2019 → 2025) | 20,062 | 22,380 | ▲ 11.6% | 8th of 67 by growth |
| Average annual pay (2019 → 2025) | $39,502 | $57,291 | ▲ 45.0% | — |
| Unemployment rate (2019 → August 2026) | 2.8% | 3.2% | ▲ 0.4pts | — |
98,206 people live here, up 7.1% since 2020.
Who powers St. Clair County
Utilities with service territory in St. Clair County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| Alabama Power Co | Investor Owned | Bundled | 1,332,911 | 16.77¢ | 26% |
| Coosa Valley Electric Coop Inc | Cooperative | Bundled | 15,612 | 15.71¢ | 10% |
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 St. Clair County in the EIA-860M inventory. Its power comes over the grid from plants elsewhere.
The St. Clair County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 22,380 | $57,291 | 1.00 |
| Data processing and hosting | 30 | $91,001 | 0.43 |
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 St. Clair County
No data center, local measure or delayed project is on record in St. Clair County. Alabama has 18 local measures on record statewide.
St. Clair County and its neighbors
Of the 6 counties that border St. Clair County, Jefferson County 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 |
|---|---|---|---|---|---|---|
| St. Clair County | 98,206 | ▲ 11.6% | — | — | — | — |
| Blount County | 60,156 | ▲ 5.9% | — | — | — | — |
| Calhoun County | 115,834 | ▼ 2.4% | 828 MW | — | 1 | — |
| Etowah County | 103,886 | ▼ 7.1% | — | — | 1 | — |
| Jefferson County | 665,742 | ▲ 4.1% | 2,826 MW | — | 8 | — |
| Shelby County | 238,552 | ▼ 0.1% | 2,034 MW | — | — | — |
| Talladega County | 81,603 | ▲ 5.1% | 253 MW | 400 MW | — | — |
More of Alabama
St. Clair County, answered from the record
Who provides electricity in St. Clair County, Alabama?
2 utilities have service territory in St. Clair County in the EIA-861 2024 report: Alabama Power Co, Coosa Valley Electric Coop Inc. The largest, Alabama Power Co, charged residential customers 16.77¢/kWh on average in 2024.
What county is Pell City, AL in?
Pell City is in St. Clair County, Alabama. About 14,320 people live there (2025 Census estimate).
What county is Moody, AL in?
Moody is in St. Clair County, Alabama. About 13,559 people live there (2025 Census estimate).
Are there data centers in St. Clair County?
The SAVRN Data Center Map has no data center in St. Clair County. The nearest activity on record is next door in Jefferson County.
Is St. Clair County adding jobs?
Employers counted 22,380 jobs in 2025 against 20,062 in 2019 (+11.6%, BLS QCEW).
Does St. Clair County have a data center moratorium?
No county-level measure is on record for St. Clair County. Alabama has 18 local measures statewide, listed on the state page.