Lon was living in Johnson County, Texas when his first two children were born.

1900 - US Census - Justice Precinct 6 (west part), Ellis, Texas
Household .........Role .......Sex .....Age Birthplace Birth Date
John Harden .....Head ......Male ....49 ..Tennessee Oct 1851
Jane Harden ......Wife .......Female 48 ..Georgia ...May 1852
Lon Harden .......Son .........Male ....22 ..Arkansas Jun 1878
Johnny Harden .Son .........Male ....20 ..Arkansas Oct 1880
George Harden ..Son .........Male ....18 ..Arkansas Aug 1882
Alice Harden ......Daughter Female 16 ..Arkansas Mar 1884
Tommie Harden Son ..........Male ....14 ..Arkansas Feb 1886
Bennie Harden ..Son ..........Male ....11 ..Arkansas Dec 1889
Mattie Harden ....Daughter Female 17 ..Texas ......Feb 1883
Lela Harden ........Daughter Female 15 ..Texas ......Sep 1885

1910 - US Census - Cordell, Washita, Oklahoma, United States
Household .......Role ..........Sex ....Age Birthplace
Lon A Harden ...Head .......Male ....33 ..Arkansas
Ernes Harden ...Wife ........Female 23 ..Kentucky
John W Harden Son .........Male ....6 ....Texas
Allie L Harden...Daughter Female 2 ....Texas

On Sept. 12, 1918 Lon was living at Route 4, Cordell, Oklahoma.

1920 - US Census - Cordell, Washita, Oklahoma, United States
Household .........Role .........Sex ...Age Birthplace
L A Hardin ..........Head ......Male ....43 ..Arkansas
Erna Hardin .......Wife ........Female 32 ..Kentucky
Wesley J Hardin Son .........Male ....15 ..Texas
Allie Hardin........Daughter Female 12 ..Texas
Alvia Hardin .......Son ........Male .... 9 ....Oklahoma

1930 - US Census - Rainey, Washita, Oklahoma, United States
Household .........Role ......................Sex ......Age Birthplace
Lon A Harden .....Head ....................Male ....53 ..Arkansas
Erner Harden .....Wife .....................Female 43 ..Kentucky
Wesley J Harden Son ......................Male ....26 ..Texas
Allie L Harden .....Daughter.............Female 23 ..Texas
Alvia L Harden ....Son .....................Male ....19 ..Oklahoma
Pearl Harden .......Daughter-in-law Female 21 ..Oklahoma

1940 - US Census - Butler, Butler Town, Custer, Oklahoma, United States
Last Place of Residence: Rural, Washita, Oklahoma
Household ......Role ...Sex .....Age Birthplace
Lou A Hardin ...Head Male ....63 ..Arkansas
Erner L Hardin Wife ..Female 53 ..Kentucky

In December 1957 LA was living in/near Hammon, Oklahoma.
In June 1961 LA was livingin/near Hammon.