ZIP Codes of Saint John County, VI

Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (1 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:340
Timezone:GMT -04:00
Local Time:2:14:14 PM
FIPS:78020
Land Area:19 sq mi
Water Area:9 sq mi
Coordinates:18.3344, -64.7746
Quick Link:
https://www.zip-codes.com/county/vi-saint-john.asp
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Standout ZIPs in this County


Most Populous
— no population data
Highest Income
— no income data
Largest Land Area
St John · 19.3 sq mi
Spans the most ground
Fastest Growth
— growth not calculable
Most Educated
— no education data

Things worth knowing about Saint John County


0 residents live across 2 ZIPs covering 19 sq mi, served by 1 distinct USPS-recognized cities.

Within VI, this is the #1 most populous of 3 counties .

1 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

All ZIP Codes in Saint John County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
00831St JohnPO Box0.0
00830St JohnStandard19.3

Adjacent & Nearby Counties