The SSDI only confirms that a person died and the date of death. The place of death is not listed. If a person died in San Joaquin county per the CA death index then they died in San Joaquin county.
SCOTT JEANETTE ELIZABETH dob 1930 09 12 mother CARVER father CRONE FEMALE state of birth WA county of death SAN JOAQUIN dod 1992 05 03 ss#243347882 age 61
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I'll put you in contact with a volunteer that can help with an obituary from the Stockton Record