The Diamond A Ranch headquarters is located just off Highway 21 on Lee County Road 400 just outside of Dime Box, Texas. The ranch consists of approximately 3,500 acres in Lee and Burleson counties. Its central location makes it easily accessible from Houston, San Antonio, Austin, Dallas, and College Station. Map


Horseback (L to R): Alan, Majers, Jerry Armstrong Jr., and Sonny.
In Gator (L to R): David Armstrong, Julie Armstrong, and Coleen
On Ground (L to R): Nato and Lencio

Diamond A Ranch began operations in 1974, when Jerry M. Armstrong Sr. and his wife Marion purchased the first herd of F-1 Brahman females. Read More

2009 marks the 35th Anniversary of Diamond A Ranch. The ranch currently consists of a cow herd of over 400 registered Brahmans, 500 crossbred cows, and 1,000-2,500 stockers. Read More


Diamond A Ranch began breeding Brahman cattle in 1981 when Jerry Jr. and Julie Armstrong graduated from college with degrees in Animal Science with the determination to produce and market registered gray Brahman cattle. Read More


In August 2000, Diamond A Ranch became a partner in the local livestock auction company, Caldwell Livestock Commission. With weekly cattle sales each Wednesday and additional replacement female sales, the company is actively involved in the local cattle market.




1245 CR 400, Dime Box, TX 77853
Office: (979) 884-0150 • Jerry Cell: (979) 324-4500

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