# Warren County, Missouri: Power, Data Centers and the Local Economy Home to Warrenton, Wright City and Marthasville No data center or power plant project is on record in Warren County, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Construction employs 1,019, up 53.0% since 2019, and construction is 2.1 times as concentrated here as in the U.S. economy. Warren County is home to Warrenton, Wright City, Marthasville and Truesdale. Employers here counted 9,000 jobs in 2025, up 17.8% from 2019 (the 4th fastest growth of 115 Missouri counties). Next door, Montgomery County has 3 data centers. 439 MW of that came online in 2019 or later, mostly solar. +17.8% total jobs since 2019, now 9,000 2.1× the U.S. share of jobs in construction 439 MW of operating power plants, mostly solar ## Cities and towns in Warren County Warren County is home to Warrenton, Wright City, Marthasville and Truesdale. Warrenton9,667 residents Wright City5,854 residents Marthasville1,302 residents Truesdale1,054 residents Innsbrook653 residents Foristell453 residents · 49% of the city - Foristell also extends into [St. Charles County](https://savrn.com/power-supply-chain-map/missouri/st-charles-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 Warren County | Measure | Then | Now | Change | Rank in Missouri | |---|---|---|---|---| | Population (2020 → 2025) | 35,740 | 39,016 | ▲ 9.2% | 31st of 115 by size | | Total jobs (2019 → 2025) | 7,642 | 9,000 | ▲ 17.8% | 4th of 115 by growth | | Average annual pay (2019 → 2025) | $39,523 | $53,114 | ▲ 34.4% | — | | Construction jobs (2019 → 2025) | 666 | 1,019 | ▲ 53.0% | 9th of 71 by growth | | Unemployment rate (2019 → August 2026) | 2.9% | 3.7% | ▲ 0.8pts | — | | Generating capacity added since 2019 | — | 439 MW | | — | | Generating capacity retired since 2019 | — | 0 MW | | — | Its power plants have 439 MW of capacity, 100% of it solar. Unemployment was 3.7% in August 2026, against 2.9% in 2019. 39,016 people live here, up 9.2% since 2020. Union Electric Co - (MO) is the largest utility serving Warren County, one of 3 with territory here. Its residential customers paid an average 12.56¢/kWh in 2024. ## Who powers Warren County ### Utilities with service territory in Warren County | Utility | Ownership | Service | Residential customers (systemwide) | Residential price, 2024 | Commercial share of sales | |---|---|---|---|---|---| | Union Electric Co - (MO) | Investor Owned | Bundled | 1,095,619 | 12.56¢ | 44% | | Cuivre River Electric Coop Inc | Cooperative | Bundled | 72,974 | 11.07¢ | 4% | | Callaway Electric Cooperative | Cooperative | Bundled | 12,647 | 16.29¢ | 22% | 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 | Technology | Capacity | Share | |---|---|---| | Solar | 439 MW | 100% | | Largest plants | Owner | Technology | MW | Since | |---|---|---|---|---| | Split Rail Solar Energy LLC | Invenergy Services LLC | Solar | 300 MW | 2026 | | Blue Bird Solar, LLC | Blue Bird Solar, LLC | Solar | 139 MW | 2024 | ## The Warren County labor market | Industry (2025) | Jobs | Average pay | Concentration vs U.S. | |---|---|---|---| | All industries | 9,000 | $53,114 | 1.00 | | Construction | 1,019 | $63,146 | 2.14 | 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 Warren County No data center, local measure or delayed project is on record in Warren County. Missouri has 21 local measures on record statewide, and 1 neighboring county has one: [St. Charles County](https://savrn.com/power-supply-chain-map/missouri/st-charles-county). ## Warren County and its neighbors Of the 5 counties that border Warren County, Franklin 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 | |---|---|---|---|---|---|---| | Warren County | 39,016 | ▲ 17.8% | 439 MW | — | — | — | | Franklin County](https://savrn.com/power-supply-chain-map/missouri/franklin-county) | 108,090 | ▲ 0.6% | 2,389 MW | — | — | — | | Gasconade County](https://savrn.com/power-supply-chain-map/missouri/gasconade-county) | 14,784 | ▼ 5.6% | — | — | — | — | | Lincoln County](https://savrn.com/power-supply-chain-map/missouri/lincoln-county) | 66,676 | ▲ 9.4% | 150 MW | — | — | — | | Montgomery County](https://savrn.com/power-supply-chain-map/missouri/montgomery-county) | 11,590 | ▲ 9.0% | 6 MW | — | 3 | — | | St. Charles County](https://savrn.com/power-supply-chain-map/missouri/st-charles-county) | 426,499 | ▲ 7.1% | 1,104 MW | — | 1 | 1 | ## More of Missouri [All Missouri countiesThe state power page and county mapOpen →](https://savrn.com/power-supply-chain-map/missouri)[St. Charles County426,499 peopleOpen →](https://savrn.com/power-supply-chain-map/missouri/st-charles-county)[Franklin County108,090 peopleOpen →](https://savrn.com/power-supply-chain-map/missouri/franklin-county)[Lincoln County66,676 peopleOpen →](https://savrn.com/power-supply-chain-map/missouri/lincoln-county)[Gasconade County14,784 peopleOpen →](https://savrn.com/power-supply-chain-map/missouri/gasconade-county)[Montgomery County11,590 peopleOpen →](https://savrn.com/power-supply-chain-map/missouri/montgomery-county) ## Warren County, answered from the record ### Who provides electricity in Warren County, Missouri? 3 utilities have service territory in Warren County in the EIA-861 2024 report: Union Electric Co - (MO), Cuivre River Electric Coop Inc, Callaway Electric Cooperative. The largest, Union Electric Co - (MO), charged residential customers 12.56¢/kWh on average in 2024. ### What power plants are in Warren County? 2 operating plants with 439 MW of capacity. The largest is Split Rail Solar Energy LLC (300 MW, solar). ### Are there data centers in Warren County? The SAVRN Data Center Map has no data center in Warren County. The nearest activity on record is next door in Montgomery County. ### Is Warren County adding jobs? Employers counted 9,000 jobs in 2025 against 7,642 in 2019 (+17.8%, BLS QCEW). Construction went from 666 to 1,019. ### Does Warren County have a data center moratorium? No county-level measure is on record for Warren County. Missouri has 21 local measures statewide, listed on the state page. --- Canonical: https://savrn.com/power-supply-chain-map/missouri/warren-county Updated: 2026-10-08. Refreshed weekly by SAVRN from EIA, BLS, BEA, Census and the SAVRN trackers. License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).