[8][9] He purchased 200,000 acres (810 km2) of ranchland and established the Double U Company to manage the town's construction.

The company built trim houses and numerous structures including the Algerita Hotel, a gin, and a textile plant.

The Garza County paper today is called the Post Dispatch—by coincidence, also the same as the current daily in St. Louis.

By then, Post had a population of 1000, 10 retail businesses, a dentist, a physician, a sanitarium, and Baptist, Methodist, and Presbyterian churches.

[11] The C. W. Post estate pledged $75,000, and the town raised $35,000 in 1916 to bid unsuccessfully to become the site of the proposed West Texas Agricultural and Mechanical College.

When the Post interests sold the business in 1945 to Ely and Walker Dry Goods Company of St. Louis, the plant was producing six million yards of cloth a year and employed 375 workers, who manufactured Postex cotton sheets and Garza pillow cases.

Ely and Walker sold Postex in 1955 to Burlington Industries, the world's largest textile manufacturer at that time.

With the development of the local oil industry, the town's population attained its highest level of 4,800 in 1964.

Many ranchers and civic boosters live in Garza County, among them Giles McCrary, a former mayor, who until his death in 2011 operated the OS Museum, a hybrid of exhibits from both the American West and Asia, which are changed three times per year.

Two baseball fields in Post are named for former resident Norm Cash.

Post is located on the rolling plains at the foot of the Llano Estacado at 33°11′30″N 101°22′50″W / 33.19167°N 101.38056°W / 33.19167; -101.38056 (33.191789, –101.380432).

The city feels influence from both sides, being in the subtropics at the transition from a humid to dry environment.

KSSL (FM) is licensed to Post, but operates primarily from offices and studios in Slaton.