Rex and Marillyn Lee King Family Foundation C/O Jessica King

Greater Houston Community Foundation

Houston, TX

The Foundation makes grants through donor-advised and other donor-established funds for public benefit, human services, education, and health, including initiatives addressing economic mobility and poverty in Harris County. In 2024, its median grant was $25,000; it serves Greater Houston, while grants also go to recipients elsewhere in Texas and beyond. It does not accept proposals for the upcoming High-Impact Grantmaking cycle and plans to invite selected organizations or collaboratives to apply.

Je and Le Mabee Foundation Inc

Midland, TX

The J.E. and L.E. Mabee Foundation funds capital construction, renovation, and major medical equipment projects for eligible nonprofits, including educational, health, cultural, religious, and social or humanitarian organizations, in Texas, Oklahoma, New Mexico, Arkansas, Missouri, and Kansas. Its challenge grants are typically around $500,000 (the 2025 median), up to $2 million under its guidelines. It does not accept unsolicited requests.

Lumen Clarke M Williams Foundation

Wilmington, DE

The foundation supports employee giving and volunteer programs, as well as K–12 classroom technology through its Teachers and Technology program. That program offers grants of up to $5,000 to eligible schools in 10 states; 2024 giving had a median grant of $6,110 and was concentrated in Delaware. It generally funds preselected organizations and does not accept unsolicited requests, though eligible teachers could apply for the announced Teachers and Technology round.

United Way for Greater Austin

Austin, TX

United Way for Greater Austin funds nonprofits working on early childhood and kindergarten readiness, family economic stability, basic needs, education and employment, and access to resources, primarily in Central Texas. Its 2025 grants ranged from $8,680 to $195,000, with a median of $30,000. The available information does not state whether it accepts unsolicited requests or describe a current application process.

Community Foundation of the Texas Hill Country Inc

Kerrville, TX

The Community Foundation of the Texas Hill Country supports nonprofits through grants, with Community Impact Fund priorities in arts and culture, basic needs, the environment, and youth development. Its 2025 grants had a median award of $50,000, and it serves Bandera, Blanco, Edwards, Gillespie, Kendall, Kerr, Kimble, Mason, Real, and Uvalde counties in Texas. The Community Impact Fund accepts unsolicited applications through an annual competitive process.

Rosenquist Foundation

Corpus Christi, TX