1889History
In April 1889, Jeff Reed (a Texan and relative of the Daggs family) was appointed to carry the mail from Stonewall to Center (which was later combined with Pickett), two small c...
1891Government
In 1891, a post office was established and named after Reed's oldest daughter, Ada.
1901Government
The city was named for Ada Reed, the daughter of an early settler, and was incorporated in 1901.
1909Military
In 1909, the women of Ada organized an effort to build a normal school in their city.
1910Infrastructure
The first manufacturing company in Ada, the Portland Cement Company, installed the first cement clinker in Oklahoma in 1910.
1916Economy
American Glass Casket Company began manufacturing glass caskets in 1916, but the business failed.
1920Architecture
== Culture ==
McSwain Theatre, opened in 1920
== Economy ==
The economy of Ada is diversified.
1928Economy
Hazel Atlas Glass bought the plant in 1928 and produced glass products until 1991.
1966Architecture
Kerr Environmental Research Center, a large water research lab staffed by the Environmental Protection Agency, opened in 1966.
1975Architecture
In 1975, the Chickasaw Nation opened its headquarters in Ada.
2006History
Ada's 2006 racial makeup was 73.81% White, 3.54% African American, 15.10% Native American, 0.83% Asian, 0.01% Pacific Islander, 0.89% from other races, and 5.81% from two or mor...
2010History
=== 2010 census ===
As of the 2010 census, Ada's 16,810 residents consisted of 6,697 households and 3,803 families.
2011History
Revenues for the Nation were over 12 billion dollars in 2011, most of which is funneled through Ada.
2018History
In 2018, Grisham's book was adapted into a Netflix series, also titled The Innocent Man, combining and extending the cases outlined in his and Mayer's books.