Amazon plans up to 15 Missouri data center buildings

Amazon plans up to 15 additional data center buildings on 890 acres in Montgomery County, Missouri.

The proposal would occupy a separate site from the campus Amazon Web Services (AWS) is already developing in New Florence, and Amazon has not acquired the land.

Mid-Missouri Business reported that an Amazon representative told Montgomery County commissioners about the expansion and said the company was considering building closer to Danville.

AWS is also holding an open house to discuss a potential data center in Posey County, Indiana, while exploring several properties, according to Tristate Homepage. The project remains in an early planning phase.

CenterPoint Energy's excess power-grid capacity (available electricity supply) forms part of the regional appeal. Posey County lies in southwest Indiana near Evansville.

Keith Klein, AWS director of Data Center Solutions, said: “We’re here to talk to the community and to understand exactly what the community is looking for in a deployment of this size, and continue that particular dialogue with us.”

He added: “We’re open to hearing that particular conversation, and don’t look at us as someone you can’t speak to: we want to hear from the community, and we want to build something together.”

New Florence campus

AWS is building a 1,000-acre data center campus (a grouped set of facilities) in New Florence and has divided the development into two phases.

• Phase one calls for eight data center buildings.
• Phase two could add 13 buildings of similar size.
• In June, the company said it would invest $10 billion in the campus.

Together, the phases represent 21 potential buildings, subject to the second phase proceeding. The June investment figure applies to New Florence; Amazon has disclosed no comparable dollar amount for the separate 890-acre proposal.

Approval and timing

Amazon has set no construction date for the 890-acre proposal. Its stated 2027-2029 start window remains conditional on approval, and the company is evaluating property rather than holding a final site.

The proposal would establish another concentrated group of buildings near Danville, separate from the New Florence project. Neither the property purchase nor project approval has been completed.

What changes for the regional data-center market?

If every disclosed phase proceeds, Montgomery County could host 36 data center buildings: 21 across New Florence’s two phases and up to 15 on the separate 890-acre site. That is a development pipeline (planned or proposed projects), not operating capacity.

Montgomery County lies west of St. Louis and east of Columbia. St. Louis and Kansas City are Missouri’s largest data center markets; Indianapolis, Gary and South Bend contain most of Indiana’s data centers.

For AWS, contractors and grid operators, the immediate change is a wider prospective pipeline rather than a firm construction schedule.

New Florence has a two-phase build plan and a $10 billion investment announcement. The 890-acre project has a broad start window but no acquired property or approval, while Posey has no disclosed building count and remains at the site-evaluation stage.

The practical distinction is status: New Florence is under construction, the 890-acre proposal remains conditional, and Posey is an early-stage site search. The 36-building figure is therefore a ceiling drawn from current disclosures, not a committed operating total.