Sullivan County, Missouri: Power, Data Centers and the Local Economy
Home to Milan
No data center or power plant project is on record in Sullivan County, but the national build-out still reaches it through its utility bill, its labor market and the projects next door. Sullivan County is home to Milan and Green City. Next door, Adair County has 1 data center. Unemployment was 4.5% in August 2026, against 3.2% in 2019. Employers here counted 2,306 jobs in 2025, down 2.7% from 2019. Union Electric Co - (MO) is the largest utility serving Sullivan County, one of 6 with territory here. Its residential customers paid an average 12.56¢/kWh in 2024.
Cities and towns in Sullivan County
Sullivan County is home to Milan and Green City.
- Browning also extends into Linn County.
Unincorporated communities (governed by the county): Winigan.
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 Sullivan County
1st = the most. Ranks cover counties with a value on record.
| Measure | Then | Now | Change | Rank in Missouri |
|---|---|---|---|---|
| Population (2020 → 2025) | 5,985 | 5,738 | ▼ 4.1% | 106th of 115 by size |
| Total jobs (2019 → 2025) | 2,369 | 2,306 | ▼ 2.7% | 91st of 115 by growth |
| Average annual pay (2019 → 2025) | $42,571 | $51,932 | ▲ 22.0% | — |
| Unemployment rate (2019 → August 2026) | 3.2% | 4.5% | ▲ 1.3pts | — |
5,738 people live here, down 4.1% since 2020.
Who powers Sullivan County
Utilities with service territory in Sullivan 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% |
| Macon Electric Coop | Cooperative | Bundled | 10,023 | 14.82¢ | 16% |
| Grundy Electric Coop, Inc | — | — | — | — | — |
| City of Milan - (MO) | — | — | — | — | — |
| North Central MO Elec Coop Inc | — | — | — | — | — |
| Tri-County Electric Coop Assn (MO) | — | — | — | — | — |
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 Sullivan County in the EIA-860M inventory. Its power comes over the grid from plants elsewhere.
The Sullivan County labor market
| Industry (2025) | Jobs | Average pay | Concentration vs U.S. |
|---|---|---|---|
| All industries | 2,306 | $51,932 | 1.00 |
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 Sullivan County
No data center, local measure or delayed project is on record in Sullivan County. Missouri has 21 local measures on record statewide.
Sullivan County and its neighbors
Of the 5 counties that border Sullivan County, Adair 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 |
|---|---|---|---|---|---|---|
| Sullivan County | 5,738 | ▼ 2.7% | — | — | — | — |
| Adair County | 25,684 | ▼ 6.2% | 250 MW | — | 1 | — |
| Grundy County | 9,744 | ▼ 7.2% | 30 MW | — | — | — |
| Linn County | 11,815 | ▲ 6.4% | 8 MW | — | — | — |
| Mercer County | 3,404 | ▼ 53.1% | — | — | — | — |
| Putnam County | 4,546 | ▲ 7.4% | 62 MW | — | — | — |
More of Missouri
Sullivan County, answered from the record
Who provides electricity in Sullivan County, Missouri?
6 utilities have service territory in Sullivan County in the EIA-861 2024 report: Union Electric Co - (MO), Macon Electric Coop, Grundy Electric Coop, Inc, City of Milan - (MO). The largest, Union Electric Co - (MO), charged residential customers 12.56¢/kWh on average in 2024.
Are there data centers in Sullivan County?
The SAVRN Data Center Map has no data center in Sullivan County. The nearest activity on record is next door in Adair County.
Is Sullivan County adding jobs?
Employers counted 2,306 jobs in 2025 against 2,369 in 2019 (-2.7%, BLS QCEW).
Does Sullivan County have a data center moratorium?
No county-level measure is on record for Sullivan County. Missouri has 21 local measures statewide, listed on the state page.