2025 Compare Cities People:
San Luis Obispo, CA vs Quincy, IL

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Highlights
- Quincy is 0% more densely populated than San Luis Obispo.
- People are 67.1% more likely to be married in Quincy.
- The Median Age is 14.0 years older in Quincy.
 San Luis Obispo, CAQuincy, ILUnited States
 Population  Unlock39,687329,725,481
 Female Population49.1%  Unlock50.5%
 Male Population50.9%  Unlock49.5%
 Median Age  Unlock4038.4
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 Population - 201045,193  Unlock309,327,143
 Population - 2000  Unlock40,366285,036,114
 Population - 199041,958  Unlock251,960,433
 Pop. 2000 to Now  Unlock-1.9%15.6%
 Pop. 1990 to Now13.4%  Unlock30.8%
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 Population Density  Unlock2,525.993.4
 Land Area13.1  Unlock3,531,905.4
 Water Area  Unlock0.0264,836.8
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 Est. Total Population By Age
 San Luis Obispo, CAQuincy, ILUnited States
 Age 0 to 43.1%  Unlock5.9%
 Age 5 to 9  Unlock6.4%6.1%
 Age 10 to 142.9%  Unlock6.6%
 Age 15 to 17  Unlock2.8%3.9%
 Age 18 to 2014.7%  Unlock4.0%
 Age 21 to 24  Unlock5.4%5.2%
 Age 25 to 3413.4%  Unlock13.8%
 Age 35 to 44  Unlock11.8%12.9%
 Age 45 to 547.5%  Unlock12.6%
 Age 55 to 59  Unlock6.5%6.7%
 Age 60 to 645.5%  Unlock6.3%
 Age 65 to 74  Unlock10.8%9.6%
 Age 75 to 843.7%  Unlock4.5%
 Age 85 and over  Unlock3.7%1.9%
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 Race
 San Luis Obispo, CAQuincy, ILUnited States
 White70.7%  Unlock59.4%
 Black  Unlock6.1%12.2%
 Asian4.8%  Unlock5.6%
 Native American  Unlock0.1%0.6%
 Hawaiian, Pacific Islander0.0%  Unlock0.2%
 Other  Unlock0.0%0.4%
 Two or More Races3.9%  Unlock3.2%
 Hispanic  Unlock1.9%18.4%
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 Marriage & Family
 San Luis Obispo, CAQuincy, ILUnited States
 Married Population28.8%  Unlock49.8%
     Currently Married  Unlock46.4%48.0%
 Married but Separated0.9%  Unlock1.8%
 Single Population  Unlock51.9%50.2%
 Never Married59.0%  Unlock33.8%
 Divorced  Unlock13.9%10.8%
 Widowed3.9%  Unlock5.6%
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 Household Size  Unlock2.272.60
 Households19,035  Unlock124,010,992
 Family Households  Unlock9,56580,755,759
     Married couple, w/children23.1%  Unlock30.5%
     Married couple, no children  Unlock46.1%42.9%
 Non Family Households11,342  Unlock43,255,233
     Single householder, w/children  Unlock18.5%15.8%
     Single householder, no children15.3%  Unlock10.8%
Reviews for San Luis Obispo    21 Reviews

MY FIANCEE AND I ARE LOOKING TO MOVE TO SLO FOR RETIREMENT ( NEXT MONTH ) WE ARE BOTH ARTISTS AND HOPE OUR TALENT WILL HELP WITH COST OF LIVING IN SLO!!! ANY  More

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Over 10 years ago

In almost any season of the year in San Luis Obispo, you’ll find the sun shining and the temperature hitting around 70º at some point in the day. With the temperature  More

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San Luis Obispo and surrounding areas are beautiful, great weather, beaches, farms markets, a downtown area full of some of the best bars and restaurants, wine country,  More

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Reviews for Quincy    21 Reviews

Over 9 years ago

I have live in quincy il since 2003 till now and it really is a nice place to raise your family no matter where you go, you going to have crime. but other than that it's  More

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I lived in Quincy for 15 years. I owned a house and participated in the local economy. My kids went to school there. The kids have fond memories of Quincy. I do not.  More

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Over 12 years ago

I haven't always lived in Quincy. I'm originally from the St. Louis area, but have moved around many times, and have also done a lot of traveling. My husband & I  More

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