Instacart is taking a step into Dallas-Fort Worth that H-E-B hasn't yet.

The online grocery shopping and delivery service has added H-E-B as a local option in some D-FW ZIP codes. So while the popular and largest Texas-based grocer hasn't opened H-E-B stores in the most densely populated parts of D-FW, Instacart is bringing it here through deliveries.

The shopping service's employees can purchase from any store for its Instacart members and recently added H-E-B locally. So far, Oak Cliff's 75208 is confirmed. There are more than three dozen ZIP codes in D-FW, including downtown Dallas, Fort Worth and Arlington, where Instacart is accepting orders from H-E-B. (See list below.)

And H-E-B is fine with that.

"We are pleased the Instacart customer in select D-FW ZIP codes has both H-E-B and Central Market as choices when they shop for distinctive food items," said Mabrie Jackson, a spokeswoman for Central Market in Dallas.

Instacart is H-E-B's partner for online grocery deliveries in other Texas cities, and also for Central Market stores in Dallas-Fort Worth. Central Market's curbside pickup orders are filled by Central Market store staffers, and the company has built dedicated areas inside and outside its stores for its curbside business.

It's not clear how fulfillment will be carried out. Instacart hasn't yet responded about the logistics. Regular shoppers at Central Market's six local stores in Dallas, Fort Worth, Plano and Southlake know that it stocks a lot of H-E-B-branded groceries.

The retailer's closest H-E-B store to Dallas is 20 miles south in Waxahachie. Some Dallas residents already make the trip to stock up on the chain's private-label foods.

Oak Cliff residents were talking about it on social media Tuesday evening after they noticed the H-E-B icon as an option on their Instacart pages.

H-E-B opened a store in May west of Fort Worth in Hudson Oaks, and last year it remodeled and expanded its Burleson store. Other stores on the Fort Worth side of the region are in Granbury and Cleburne.

H-E-B owns dozens of parcels around the D-FW region but hasn't committed to opening stores in Dallas, Collin, Tarrant and other counties that make up the metro area. The family- and employee-owned and -operated company moves at its own pace and is highly regarded in the grocery industry as an innovator.

H-E-B is now available for delivery in the following ZIP codes: 75181, 75149, 75390, 75204, 75212, 75247, 75205, 75226, 75253, 75201, 75180, 75217, 75219, 75172, 75223, 75141, 75241, 75246, 75270, 75216, 75208, 75150, 75207, 75215, 75203, 75214, 75209, 75225, 75228, 75206, 75210, 75235, 75202, 75227, 76105, 76108, 76114, 76164, 76133, 76103, 76116, 76134, 76127, 76111, 76107, 76102, 76129, 76123, 76104, 76126, 76008, 76110, 76132, 76115, 76119, 76135, 76109.

Twitter: @MariaHalkias