Whole milk price in San Diego.

How we got these numbers

• Walmart+:Regional baseline ($2.87)
• Instacart — Aldi:Calibrated estimate against retailer-specific multiplier ($2.96)
• Instacart — Wegmans:Category multiplier against Walmart base, adjusted for West Urban ($3.16)
• Amazon Fresh (Prime):Category multiplier against Walmart base, adjusted for West Urban ($3.45)
• Instacart — Sprouts:Category multiplier against Walmart base, adjusted for West Urban ($3.73)
• Whole Foods Market:Calibrated estimate against retailer-specific multiplier ($6.26)

Live observations come from public weekly ads (Aldi, Whole Foods) and BLS Average Retail Food Prices, refreshed daily. Estimates use a per-category multiplier calibrated to NPR, Consumer Reports, and Tasting Table grocery comparison studies.

Why this category prices the way it does

Dairy is the most regionally stable category — milk and eggs track USDA market reports closely, so the price gap between services is usually under 25%.

San Diego grocery context

San Diego's grocery scene leans heavily on Vons and Ralphs (both Kroger), with Sprouts as the primary organic-and-natural option. Whole Foods has a smaller SD footprint than LA. Aldi opened its first San Diego stores in 2022-2023 (Chula Vista, El Cajon) and delivery coverage is still expanding. The Mexican border proximity means many SD shoppers cross-shop in Tijuana for produce — a habit that delivery services have eroded but not eliminated.

Without strong Aldi coverage, Walmart+ becomes the default cheapest option for most San Diego zips. Instacart-Sprouts is the best produce-and-natural-foods alternative to Whole Foods at noticeably lower prices.

Whole milk prices in other cities

• Los Angeles, CA
• Phoenix, AZ
• San Jose, CA
• Seattle, WA
• Denver, CO