It's best to keep meta descriptions long enough that they're sufficiently descriptive.
It's best to keep meta descriptions long enough that they're sufficiently descriptive, so we recommend descriptions between 50–160 characters. Keep in mind that the "optimal" length will vary depending on the situation, and your primary goal should be to provide value and drive clicks.
Keywords: Local Search Marketing, Local Listings and SEO, Setting Up Local Business Listings, Local Business Categories, Claiming Local Listings, Local Citations