Local directories are websites that list businesses by category and location, serving as digital versions of old phone books but with much more SEO power. They range from major platforms like Google Business Profile, Bing Places, Apple Maps, Yelp, and Yellow Pages to niche directories like Healthgrades for doctors or Avvo for lawyers. In Canada, directories like Canada411, YellowPages.ca, and provincial business registries matter for local presence. These directories serve two critical SEO functions. First, they're direct traffic sources where potential customers actually search for services. Someone looking for a plumber in Ottawa might start on Google Maps or Yelp rather than a regular Google search. Second, they create citations, which are mentions of your business NAP across the web. Search engines use citation consistency as a trust signal when determining local rankings. If your business appears with identical information across 40+ directories, that's stronger validation than appearing on just three. The hierarchy matters. Google Business Profile is mandatory and carries the most weight, roughly 10x more important than any other directory. After that, focus on the 15-20 directories that actually get traffic in your market: Yelp, Facebook, Bing Places, Apple Maps, major aggregators like Neustar Localeze, and industry-specific platforms. Don't waste time on obvious spam directories or those requiring payment for basic listings. At Ottawa SEO, we typically build 30-50 citations for local clients, prioritizing data accuracy over quantity. Inconsistent NAP information across directories actively hurts rankings, so if your address changed or you use different phone numbers, clean that up before building new listings. We also verify which directories actually refer traffic through Google Analytics before investing time in minor platforms. A directory that sends zero visits in six months isn't worth maintaining, even if it theoretically helps citations.