How much is 1 gallon of milk in Puerto Rico?

A gallon of whole milk in Puerto Rico typically runs $6.00 to $7.00 in 2026, with the island average around $6.47 per recent retail surveys and a regulated price-floor increase from local dairy authorities taking effect 27 May 2026. That is 50 to 80 percent above the US mainland average ($3.49 to $4.00). Two structural reasons drive the gap. Puerto Rico’s regulated farmgate price runs around $40 per hundredweight against the mainland average of $25 to $26, and the island’s 11.5 percent sales tax (IVU) is the highest under the US flag. Plaza, Econo, and Pueblo supermarkets sit at the lower end of the range; corner colmados charge more. The broader grocery basket runs 15 to 25 percent above mainland prices, factored into PR’s $411-a-month food line at the moderate tier ($3,600 total). For the full picture, see our Puerto Rico cost of living page.