Williamson County and Cities Health District Search | Advanced Search | New Members | Coupons and Discounts | All Categories   Other >> Family, Community, and Civic Organizations >> Non-Profit Organizations Williamson County and Cities Health District 355 Texas AvenueRound Rock, TX 78664 | map | directions Michelle Broddrick 512-943-3600 Visit Site Investor Since: 2003 Send a message to: Williamson County and Cities Health District Your Name: Your Email: Subject: Message: (Date: 2/7/2023)