In Search Engine Journal’s Ask An SEO, a good question was presented to the team to answer:
“I have a .us domain. I just also purchased the .com equivalent. From an SEO perspective, does it matter which one I use? My intent right now is to stick with .us and redirect any .com traffic to the original URL. Thoughts?”
It seems that this question is asked more than you’d think in the SEO space, as there are even a number of tests done to see if there will be any effect on the site that ends with either .us or .com. You can check out one of the tests by Bill Hartzer.
Check out the entire column over on Search Engine Journal to see if using .us or .com really effects your site. You’ll also be shown what you should consider and what optimizations are important for your TLD to rank well.