Fremont County, Idaho: Power, Data Centers and the Local Economy
Home to St. Anthony
No data center or power plant project is on record in Fremont County, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Fremont County is home to St. Anthony, Ashton and Teton. Employers here counted 3,797 jobs in 2025, up 21.2% from 2019 (the 5th fastest growth of 44 Idaho counties). Next door, Beaverhead County, Montana, has 400 MW of planned generation. Construction employs 360, down 5.8% since 2019, and construction is 1.8 times as concentrated here as in the U.S. economy. Its power plants have 24 MW of capacity, 100% of it hydro.
Cities and towns in Fremont County
Fremont County is home to St. Anthony, Ashton and Teton.
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 Fremont County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Idaho |
|---|---|---|---|---|
| Population (2020 → 2025) | 13,420 | 14,208 | ▲ 5.9% | 23rd of 44 by size |
| Total jobs (2019 → 2025) | 3,133 | 3,797 | ▲ 21.2% | 5th of 44 by growth |
| Average annual pay (2019 → 2025) | $36,326 | $47,536 | ▲ 30.9% | — |
| Construction jobs (2019 → 2025) | 382 | 360 | ▼ 5.8% | 30th of 33 by growth |
| Unemployment rate (2019 → August 2026) | 2.7% | 2.7% | ● 0.0pts | — |
| Generating capacity added since 2019 | — | 0 MW | — | |
| Generating capacity retired since 2019 | — | 0 MW | — |
PacifiCorp is the largest utility serving Fremont County, one of 3 with territory here. Its residential customers paid an average 12.11¢/kWh in 2024, above the 10.00¢ median for Idaho utilities. 14,208 people live here, up 5.9% since 2020. Unemployment was 2.7% in August 2026, against 2.7% in 2019.
Who powers Fremont County
Utilities with service territory in Fremont County
| Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales |
|---|---|---|---|---|---|
| PacifiCorp | Investor Owned | Bundled | 74,170 | 12.11¢ | 16% |
| Fall River Rural Elec Coop Inc | Cooperative | Bundled | 15,433 | 11.11¢ | 36% |
| Bonneville Power Administration | — | — | — | — | — |
Customer counts, prices and sales shares cover each utility's whole system in the state, not only this county. Commercial sales include data centers.
Operating power plants 4
| Technology | Capacity | Share |
|---|---|---|
| Hydro | 24 MW | 100% |
| Largest plants | Owner | Technology | MW | Since |
|---|---|---|---|---|
| Falls River Hydro | Marysville Hydro Partners | Hydro | 9 MW | 1993 |
| Ashton | PacifiCorp | Hydro | 7 MW | 1917 |
| Island Park | Fall River Rural Elec Coop Inc | Hydro | 5 MW | 1994 |
| Chester Diversion Hydroelectric Project | Fall River Rural Elec Coop Inc | Hydro | 4 MW | 2014 |
The Fremont County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 3,797 | $47,536 | 1.00 |
| Construction | 360 | $52,507 | 1.79 |
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 Fremont County
No data center, local measure or delayed project is on record in Fremont County. Idaho has 4 local measures on record statewide.
Fremont County and its neighbors
Of the 8 counties that border Fremont County, Beaverhead 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 |
|---|---|---|---|---|---|---|
| Fremont County | 14,208 | ▲ 21.2% | 24 MW | — | — | — |
| Beaverhead County MT | 10,043 | ▲ 3.2% | 80 MW | 400 MW | — | — |
| Clark County | 783 | ▼ 10.0% | 3 MW | — | — | — |
| Gallatin County MT | 128,740 | ▲ 22.6% | 4 MW | — | 2 | — |
| Jefferson County | 35,297 | ▲ 18.6% | 2 MW | — | — | — |
| Madison County | 55,172 | ▲ 12.9% | 6 MW | — | 1 | — |
| Madison County MT | 10,026 | ▼ 32.7% | 16 MW | — | — | — |
| Teton County | 13,254 | ▲ 38.4% | 7 MW | — | — | — |
| Teton County WY | 23,333 | ▲ 11.6% | 5 MW | — | — | — |
More of Idaho
Fremont County, answered from the record
Who provides electricity in Fremont County, Idaho?
3 utilities have service territory in Fremont County in the EIA-861 2024 report: PacifiCorp, Fall River Rural Elec Coop Inc, Bonneville Power Administration. The largest, PacifiCorp, charged residential customers 12.11¢/kWh on average in 2024.
What power plants are in Fremont County?
4 operating plants with 24 MW of capacity. The largest is Falls River Hydro (9 MW, hydro).
Are there data centers in Fremont County?
The SAVRN Data Center Map has no data center in Fremont County. The nearest activity on record is next door in Beaverhead County.
Is Fremont County adding jobs?
Employers counted 3,797 jobs in 2025 against 3,133 in 2019 (+21.2%, BLS QCEW). Construction went from 382 to 360.
Does Fremont County have a data center moratorium?
No county-level measure is on record for Fremont County. Idaho has 4 local measures statewide, listed on the state page.