- United Way of San Diego County
- United Way of San Joaquin County, Inc.
- United Way of San Luis Obispo County
- United Way of Sandusky County, Inc.
- United Way of Sanliac County
- United Way of Santa Cruz County
- United Way of Santa Fe County, Inc.
- United Way of Scotland County, Inc.
- United Way of Scott County, Inc.
- United Way of Screven County, Inc.
- United Way of Selma and Dallas County
- United Way of Seneca County
- United Way of Sheboygan County
- United Way of Siouxland
- United Way of Skagit County
- United Way of Smith County
- United Way of Smyth County
- United Way of South Central Illinois
- United Way of South Central Indiana
- United Way of South Central Oklahoma
- United Way of South Mississippi, Inc.
- United Way of South Sarasota County
- United Way of Southeast Alaska
- United Way of Southeast Arkansas
- United Way of Southeast Georgia, Inc.
- United Way of Southeast Mississippi, Inc.
- United Way of Southeast Missouri
- United Way of Southeastern Connecticut
- United Way of Southern Cameron County
- United Way of Southern Chester County
- United Way of Southern Columbiana County
- United Way of Southern Kentucky
- United Way of Southern West Virginia
- United Way of Southington
- United Way of Southwest Georgia
- United Way of Southwest Michigan
- United Way of Southwest Missouri and Southeast Kansas
- United Way of Southwest Virginia, Inc.
- United Way of Southwestern Indiana, Inc.
- United Way of Southwestern Pennsylvania
- United Way of Southwestern Pennsylvania Butler County)
- United Way of Southwestern Pennsylvania Fayette County)
- United Way of Southwestern Pennsylvania Westmoreland County)
- United Way of St. Clair County
- United Way of St. Johns County
- United Way of St. Joseph County, Inc.
- United Way of St. Lucie County
- United Way of St. Mary's County, Inc.
- United Way of Stamford
- United Way of Stanly County, Inc.