Try any online stores you're familiar with. Amazon.com is probably a good resource, as is Overstock.com, along with any department stores & their websites. Good luck with your search!
Counter height dining sets can be purchased where furniture is sold. The Brick has a great selection of high dining sets in various styles. Ashley Furniture also carries a selection of counter height tables.
You can find a range of counter height dining sets on 'ebay' and 'amazon'. You can also find dining sets in most furniture stores both online and instore.
On the home depot website, they have a selection of different counter height dining sets. Here's the link to these results. http://www.homedepot.com/webapp/wcs/stores/servlet/Search?keyword=counter+height+dining&langId=-1&storeId=10051&catalogId=10053
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There is an almost unlimited variety of counter height dining sets. Higher tables that come with bar stools are very popular right now, and manufacturers have starting designing many of their popular furniture lines in this size format.
There are several places one can purchase a counter height dining set. Online retailers include Overstock and Home Furniture Mart. Retailers that offer both online and in store purchase options include Sam's Club and Sears.
A chairs seat is generally 11" shorter than the height of the tabletop. In your case you would need a 25" chair. luckily for you this is the 36" is the architectural standard for counter tops so all companies make a "counter height" stool with a seat height of 25". Bar Height: 42" Bar Stool: 31" seat h. Counter Height: 36" Counter Stool: 25" seat h. Table: 28-29" Dining Chair 17-18"h.
I would try a quick search on Poly Wood counter height ding sets and see what comes up. You can also check with Amazon.com to see if they have one for you.
Dining Height: Dining height tables are typically around 28"-30" high. Therefore, the dining chairs that match these tables usually have a seat that is 16"-18" high. However, you can also use shorter backless or swivel stools that measure 18" high. Counter Height: Counter height tables are typically around 35"-36" high. Therefore, the counter stools that match these tables are usually in the 24-26" range. Counter height furniture is typically used in casual dining setups, pub sets, and home kitchen islands. Bar Height: Bar height tables are typically around 40"-42" in height. Correspondingly, the bar stools are in the 28"-30" range. Bar height furniture is most commonly used with home bars but can also be found in some pub sets and counter set ups. Extra-Tall or "Spectator" Height: Extra-Tall tables and bars are typically around 45"-48" high. Therefore, the tall bar stools that match these tables are usually in the 32-34" range. Spectator height furniture is typically used in commercial settings such as bowling alleys, pool halls, restaurants, and home bars.
It will depend on the counter height you have, which actually can vary by roughly 3 inches. Also, some consider bar height chairs as part of the sets to cozy up to the outside or raised edge of a kitchen counter for additional/ informal seating. I would start my search on Amazon.com
If you are looking for certain tables that are a certain height, you can go to Home Depot, Lowes, Walmart, Target or Kmart and take your measurements of the counter height with you.
Some more popular brands of counter height tables are Ashley Furniture, Crown Mark Tyler, and Coaster. If looking for specific models of the suggested brands above, Ashley Furniture offers the Counter Height Table with four chair bar stools.