Clients have asked this question “will changing my domain name improve my organic placement on search engines?” The answer is no. It is the content and links to a website that affect organic position not the name of the site. In fact changing the name of an existing website may actually do more damage than good.
Google specifically looks at many factors for organic search position, in fact nearly 150 of them. One of them is the length you have held your domain name. I do not recommend changing the domain name of an existing website, but for new sites I do recommend careful consideration of domains that are memorable or contain keywords.
Recently I had a client who does work for HUD under a large contract ask for help in deciding a new domain name as they had no traffic on their website. The marketing team felt that changing the name would make the site more popular with search engines. A name change will simply not bring the results that a work-over of content and what is on the home page will bring in conjunction with a link and content creation strategy.
So if you are thinking that you need to change your domain name to get more traffic, instead look very carefully at your content and when was the last time you updated your website before you make a change to your domain name.