How many different places do you shop for groceries?

3. Martin’s, Meijer, and Costco.

King Soopers for the majority (gas points)
Target if I am just there and picking up something random
Costco for mostly TP, paper towels, cleaning stuff.. then some food items like cereal
Walmart again if I happen to be there and need something misc.

So four.  

Trader Joe's is like a special trip because there isn't one by me.. so when I do go, I do pick up a few things. I don't count them though.

Costco & Wegman's about once a month, and our local one more often, for essentials that we run out of faster, milk, bread, eggs...

mostly Aldi.
There is also a local grocery store chain (Marc's) that I like to shop at, because they have decent prices on produce.
Giant Eagle..... I only shop there if there is a great coupon deal.
Otherwise, it's way too expensive.
Trader Joe for unique items.
To sum it up......
where ever groceries are cheapest

I was thinking my answer would be a quick, easy number - but not so much.

I do most of my grocery shopping at HyVee.

But, I get grocery and household items at several other stores, some for specific things, some because I’m there for other shopping.
I would not say I go on a regular schedule, like once a month, but more when I need/want something.
These include Aldi, Target, SuperTarget, Jewel, WalMart, Sam's, Costco and Trader Joe's.

Sprouts for most of my produce as their prices are great and they have a wide variety as well as top notch produce.

Stater Bros (So Cali grocery store) for meats, any canned items, and rest of produce.

Target for King Arthur GF flours as they have the best price.

Three. Safeway, TJ's and Costco.

4--luckys, local chain, mollie stones, specialty store, trader joes, and whole foods. all within about 1 mile.

When I had a family, I shopped at at least 2 different per week. Now that it's just me, I mainly shop at our local store, Metropolitian Market. Produce is always 10+ and their deli selection/in-store prepared foods are great too. I'll stop by QFC  (Kroger owned) about once a month. Trader Joe's (even though it's within walking distance) less often than that, my location has lousy produce. I have virtually stopped shopping at Whole Foods since their produce has gone downhill since Amazon purchased it.

In an average month, mostly Costco and occasionally Target for the things I don’t want a Costco quantity of or that Costco doesn’t sell. Occasionally I will have to go to the regular grocery store (Cub, and even less frequently HyVee but only because it’s further away, I like HyVee better). On the very rare occasion once or twice a year, I will go to a Trader Joe’s or Aldi if I think they will have something specific I need. I can’t be bothered to chase around to multiple stores on a regular basis.

I should add that we typically buy most of our beef a side or a quarter at a time (and sometimes a whole pig) from a butcher shop plus DH hunts deer, and that makes it easier to not have to shop sales at various stores for cheaper meat like my mom used to do.

Wegmans and occasionally a small local with great meats.

Weekly - Wegmans and Walmart
Occasionally (once a month or so) - Target and Trader Joe's

Three, plus a produce stand and a bakery (for fresh bread).