$11/hr. definately not san francisco ,starting pay for all guards is $13/hr. city guards get $22.00 starting.
U of MN is paying 9.00-11.50/hr for security guards (there are several listings on the local job boards).
Comparison of San Francisco ($13.00/hr, $27,040/yr) and Minneapolis ($9.00/hr, $18,720/yr) via salary.com:
"The cost of living in Minneapolis-St. Paul, MN is 37.7% lower than in San Francisco, CA . Therefore, you would have to earn a salary of $16,839 to maintain your current standard of living."
So, it would be worthwhile to move in that case. Looking at the higher amounts...
Comparison of San Francisco ($22.00/hr, $45,760/yr) and Minneapolis via salary.com:
"The cost of living in Minneapolis-St. Paul, MN is 37.7% lower than in San Francisco, CA . Therefore, you would have to earn a salary of $28,498 to maintain your current standard of living."
This works out to $13.70/hr (a bit higher than U of MN pays, but not so high that I wouldn't expect you to find a job in that pay range). Also, this note:
"Employers in Minneapolis-St. Paul, MN typically pay 12.2% less than employers in San Francisco, CA . Therefore, if you take the same type of job in the same type of company in Minneapolis-St. Paul, MN you are likely to earn $40,193"
Based on that combination of statements (cost of living is 37.7% lower and salaries are only 12.2% lower) moving from San Francisco to Minneapolis is a no brainer for most careers. In addition, Minneapolis and Saint Paul are filled with hippies - I think they all moved here when they left Haight-Ashbury. ;-)