Is Keyword Density still important in SEO?

[Bhuwan]

Yes peoples are still using spamming techniques like keyword stuffing, doorway pages & others to over optimize the website. Make sure about webpage keyword density, it should be not more than 3% and better to use synonyms for target keywords that reduce keyword density and support to create more relevant webpages.

[brentclark2003]

yes
It will create the difference in Ranking, Indexing and crawling.

[ShaliniVerma]

yes, it is important if you use 2-3% keyword density for 1 page.

[ravidubey]

Yes, Keyword Density is still an important factor for an SEO. In the context of SEO, keyword density can be used as a factor in determining whether a web page is related to a particular keyword.