This type of information is very useful when allocating budgets, search engine selection, and the targeting components within your Search Engine Marketing plan.
Forrester Research ( subscription required) analyzed data from almost 47,000 US households. Some findings: Mass-affluent 25- to 39-year-olds prefer Google, and affluent 70+ year-olds are the most frequent AOL visitors.
To determine affuence segments, Forrester examined consumer’s investable assets — excluding any assets held in retirement accounts. Using this information, they divided consumers into three segments: Mainstream (less than $100,000), mass-affluent ($100,000 to $1 million), and affluent (more than $1 million).
Excerpt from study:
25- to 39-year-olds prefer Google, not AOL. Mass-affluent 25- to 39-year-olds are more likely to visit Google (20% above the average for Google across all segments), MSN (17% above the MSN average), and Yahoo! (16% above the Yahoo average) than other search portals. This group of young mass-affluent consumers also turns out to be the segment least avid about AOL (20% below the AOL average).
40- to 54-year-olds prefer Netscape. Mass-affluent 40- to 54-year-old consumers are significantly more likely to visit Netscape (25% above the Netscape average across all segments) and Google (16% above the Google average).
55- to 69-year-olds prefer Netscape, not MSN. The percentage of mass-affluent 55- to 69-year-olds who visit Netscape is 50% higher than the Netscape average across all segments. At the other end of the spectrum, the portion of this group that visits MSN is 19% below the MSN average across all segments.
70+ year-olds prefer AOL but none of the others. Mass-affluent 70+ year-olds only visit one portal at an above-average rate: AOL (19% above the AOL average). This older segment has a significantly below-average percentage of consumers visiting the other sites — bottoming out with MSN (52% below the MSN average).
Here is the breakdown in more detail:

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October 8th, 2006 at
Shim,
Any stats by gender? Particularly women?
October 8th, 2006 at
Interesting question Derrick. I haven’t seen any, but if I do, I’ll be sure to follow up.
October 10th, 2006 at
For info on How Gender Affects Search, check out:
http://www.pewinternet.org/PPF/r/171/report_display.asp
I don’t know if you saw Forrester’s recent study on how your generation effects how you find a website, but it’s a good complimentary read to this post.:
How Consumers Find Web Sites In 2006. Generations’ Media Habits Shape Their Site-Finding Behavior: http://www.forrester.com/Research/Document/0,7211,40395,00.html
April 21st, 2008 at
wow, i would love to get some up to date information on Search Engine Usage by Age Groups , will keep looking