Ascension Seton Williamson cut the ribbon on a $230 million patient tower this week, adding 160 beds, two new operating rooms and a new catheterization lab to a hospital campus that has become one of Williamson County's largest employers. The six-story, 216,000-square-foot addition took just under two years to build after breaking ground in September 2024, and it pushes the hospital's total bed count to 341.
City and county officials, community members and Ascension representatives gathered for the ribbon cutting, as reported by Community Impact. Eduardo Conrado said the building created additional capacity and was thoughtfully designed, according to the outlet's report. The expansion was largely funded by local philanthropy, and the land beneath the hospital was donated years ago by the Avery and Nelson families.
Jennifer Hayhurst presented a renovated section of the existing hospital covering local families' history during the event, and said the hospital's founders had planned a community anchored in higher education and healthcare. Williamson County had no healthcare facility of that kind 26 years ago, a point Hayhurst raised as she traced how far the campus has come. Before Ascension Seton Williamson opened in 2008, county residents had to travel roughly 20 miles to Seton Medical Center Austin for comprehensive hospital care, according to the Ascension Seton Williamson Foundation, which notes that local community leaders and the Seton Foundation established the hospital foundation back in 2006 to address the shortage.
A Bigger Footprint for a Booming County
The new tower adds an expanded emergency room, a new observation unit and an additional MRI machine to the campus. Separately, the broader facility expansion dedicates 33,000 square feet to outpatient wound care, cardiac rehab and pediatric rehab. Ascension Seton had previously said the expansion would create hundreds of jobs for local healthcare workers, and the hospital system estimates Williamson County will grow another 15% over the next five years, a projection that underscores why the tower was built in the first place.
That growth estimate lines up with recent census figures: Williamson County's population reached an estimated 729,013 residents in 2024, an increase of more than 113,000 people since 2020, per the U.S. Census Bureau. Suburban expansion in Round Rock, Georgetown and Hutto has made Williamson County one of the fastest-growing regions in Texas, fueling demand across the local medical system.
A Safety-Net Hospital With a Growing Job Base
Ascension Seton Williamson is the first state-designated Level II Trauma Center in Williamson County and is also certified as a Primary Plus Stroke Center and a Center of Excellence for Bariatric Surgery, according to the Ascension Seton Williamson Foundation. That trauma designation lets the facility treat severe cases locally rather than transferring patients to Austin. The hospital has also served as a critical safety net for the region: in fiscal year 2022, it recorded nearly 64,000 patient visits, with 34% of those patients classified as uninsured or underinsured, the foundation reports.
Ascension originally estimated the $230 million project would add roughly 300 to 400 new positions to its healthcare workforce, a workforce that numbered around 540 staff members before the expansion began, according to the Austin Business Journal. Whether local clinical recruitment can keep pace with that many new roles remains an open question, as does how municipal transit and public safety infrastructure around Seton Parkway will adapt to the hospital's larger physical footprint. Outpatient services tied to the expansion are being housed separately, in a 34,000-square-foot buildout at the Seton Williamson Medical Plaza at 301 Seton Parkway, a Class A office facility connected directly to the main hospital building.
Round Rock's Hospitals Are All Racing to Add Beds
Ascension Seton Williamson isn't the only hospital system pouring money into Round Rock. Nearby competitor St. David's Round Rock Medical Center completed a $53.1 million expansion in early 2024 that added 34 intermediate care beds, then followed up in May 2026 with a $27.7 million investment for a 34-bed medical-surgical unit, as Hoodline previously reported. Baylor Scott & White Medical Center – Round Rock also unveiled its own $220 million, five-story patient tower in January 2025 that doubled its hospital bed capacity, according to Becker's Hospital Review. Both new towers incorporated universal adaptable bed designs built for post-pandemic care demands.
Altogether, health systems across Williamson County pledged more than $685 million toward hospital expansions in 2023 alone, per the Austin Business Journal's reporting. The competition among hospital networks has tracked closely with the county's overall growth: Round Rock was named the 10th best place to live in America in Livability's 2025 rankings, which credited the city's healthcare infrastructure, anchored by Ascension Seton Williamson and more than 8,400 local health practitioners, as Hoodline has noted in its own coverage of that ranking. Healthcare has become one of Round Rock's primary employment sectors alongside technology and manufacturing, a shift from the days when the county's only options sat 20 miles away in Austin.
