Almost 650,000 adult, Tampa Bay consumers belong to a fitness club. These memberships bring in close to $1.1 billion in sales to local gym owners.

January is critical for the small business owners that operate gyms in the Tampa area. According to the International Health, Racquet, and Sportsclub Association, this one month alone, accounts for 10.8% of annual membership sales. New Year's resolutions are the reason for this early year spike.

To capture a larger share of the $125.8 million local consumers  will spend on gym memberships in January, requires fitness center owners to advertise. The best way to do this is on Tampa radio. Here's why.

Ask any Tampa Bay small business owner how to measure the success of an advertising campaign. The answer will almost always 'sales.'

According to Nielsen research, the media-element of a campaign that has the most significant effect on sales is reach. This is the number of different people exposed to the advertiser's message.

There are more ways than ever to advertise. But, which of those options has the largest reach among Tampa Bay consumers?

Doug Schoen, an advertising professional with 35 years of experience, writes in Forbes: "You wouldn’t know it from all the media coverage focused on streaming video and streaming music, but radio actually has the most reach among American media consumers. 93% of adults listen to the radio each week as compared to 87% who watch TV, a substantive difference."

Tampa Bay small businesses that sell products or services to pet owners should sit up and take notice.  Local consumers will spend $753,000,000 this year on behalf of Fido and Fluffy. This amount has increased 323% since 1994, with no sign of letting up.

According to the American Pet Products Association, here's how local spending on furry companions breaks down:

• Food: $301,527,000
• Supplies/OTC Medicine: $161,795,000
• Vet Care: $183,858,000
• Live Pet Purchases: $22,062,000
• Other Services: $66,188,000

The biggest month for sales of pet-related products and services in Tampa Bay is, by far, December. That is when 10.5% of all annual spending happens in this category.

Advertising is critical to the success of every Tampa Bay small business owner.  One of the most powerful elements of any advertising campaign is how many people it reaches.

Nielsen, the world's largest consumer insights company, found that advertising reach has a more significant effect on sales than branding, recency, and context.

There are many ways a local business owner can advertise. This includes traditional media like Tampa radio, local TV, and newspaper. It also includes online advertising options such as Facebook, Instagram, and Pandora.

They type of customer an individual business needs to reach depends on the goods and services the company sells. For instance, a daycare operator might want to reach households with young children. On the other hand, a real estate agent could be looking for consumers in the market to purchase a new home.

The charts below reveal how the different advertising options available to Tampa Bay business compare in terms of the ability to reach customers with specific characteristics. This includes age, income, education, employment status, political affiliation, number of children, ethnicity, and purchase intent.

This year, Tampa Bay consumers will spend $4.3 billion in local restaurants and drinking establishments. There are thousands of local restaurants from Bradenton to Spring Hill  hungry for a bite of that cash.

Unfortunately, many of the restaurants that are here today will be gone tomorrow. According to FSR, an industry trade magazine, 60% of restaurants fail within their first year. Eighty percent never make it to their fifth anniversary.

CBI Insights studies why small business owners, such as local restaurants, fail.  Reason number eight is poor marketing and advertising.  Good food and friendly service are not enough to make a cash register ring.

Two things are remarkable about voting day in 1920.  It was the first time, ever, women could participate in the selection of the U.S. President. It was also the first time live election results were broadcast on the radio. Not to mention, it was also the first radio broadcast, ever.

The voters' choice that night was between Warren G. Harding  and James M. Cox.  Both men had derived their political power as successful newspaper publishers.  It is quite ironic, then, that one of these men would reach the highest office in the land on the same night that the nascent radio broadcasting business began its takedown of the newspaper industry.

Nowhere is this takedown more apparent than locally, where radio has become, by far, the advertising medium with the largest reach among Tampa Bay consumers.