<p>(According to) some demographers, the number of United States citizens aged 65 (or older) (is) likely (to rise) to 87 million by 2050.</p>
<p>The sentence has no error, but I’d just like to know if there’s any difference between “aged 65 or older” and “aged 65 and older”? Will the second one fit into this sentence as well?</p>
<p>Another one, is there a difference between “Home to” and “Home of”? As in, “Home of the world’s largest chocolate-manufacturing plant, Hershey, was originally known as […]”</p>
<p>For the demographer question, it is or older because it is including those who are 65. By saying “65 and older”, I think it’s changing the meaning. Or it’s just a different way of wording.</p>
<p>I’m not that sure, so you might want someone else to back me up.</p>
<p>“Number” is referring to all citizen that are 65 OR older. It is not possible to be 65 AND older, since you can only be one age. </p>
<p>Here it is for home of and home to</p>
<p>Hershey is home to the world’s largest chocolate manufacturer.</p>
<p>If the “Home” (hershey in this case) is in the beginning of the sentence and is performing the verb (is in this case) then you use “to”. </p>
<p>In the sentence you mentioned, “was” is the verb that is modifying hershey, so you would have to use “of” in the beginning of the sentence.</p>