Arthur McMicken was born on 20 August 1885 in Liverpool, Lancashire, England.
He was the son of Thomas McMicken (b. 1863) and Cecilia Elizabeth Tucker (b. 1855). His father was a native of Cumberland and his mother from Anglesey, Wales and they had married in 1882 in Birkenhead. They went on to have seven children, five of whom lived past infancy: Thomas John (b. 1884), Willie (b. 1887), Benjamin Tucker (b. 1891), Annie Dora (b. 1893) and Arthur.
On the 1891 census Arthur and his family are living at 5 Calmet (?) Street in Everton, Liverpool and his father was described as an engineer's fitter. By the time of the 1901 census they have relocated to 18 Rupert Street. Arthur, aged 15, is described as a warehouseman and his father now described as a marine engineer.
The family probably moved to Southampton around 1906, and show up living on the 1911 census living at Brae Burn, 23 Hanley Road, Southampton. Arthur is described as a steward and unmarried and his mother is described as a widow although what became of his father is unknown. Living with them also on this census is Titanic crewmen James Toshack and his wife, and steward Edward Brown. Edward may have been friendly with the McMicken family, he and Mrs McMicken both being natives of Anglesey, as he would later give their 1912 address as his when signing on to Titanic (43 Suffolk Avenue
When he signed-on to the Titanic, on 4 April 1912, he gave his address as 43 Suffolk Avenue, Southampton and he had transferred from the Olympic. He received monthly wages of £3 15s as a steward. Also serving on board was his brother Benjamin.
Arthur McMicken was rescued on Lifeboat 11 but his brother was lost.
Arthur returned to England and continued to work at sea into the 1920s, later resettling in Liverpool. He is believed to have married in later years.
Arthur McMicken died in 1958 in Liverpool.