ZIP Code 40020

40020 is one of Kentucky's ZIP codes, delivering to addresses in Fairfield, Nelson County.

City: Fairfield
County: Nelson County
State: Kentucky
Prefix: 400xx

Where this code sits

40020 is part of the 400xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Fairfield.

Fairfield Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 40020 delivers to without sharing its boundary.

502 Area code 502

ZIP codes nearest 40020

The ZIP codes whose reference points sit closest to 40020.
ZIP code	Distance	Delivers to
ZIP code 40013	4.6 mi	Coxs Creek, KY
ZIP code 40008	5.7 mi	Bloomfield, KY
ZIP code 40048	7.5 mi	Nazareth, KY
ZIP code 40071	7.8 mi	Taylorsville, KY
ZIP code 40004	9.6 mi	Bardstown, KY
ZIP code 40012	10 mi	Chaplin, KY
ZIP code 40047	12 mi	Mount Washington, KY
ZIP code 40046	14 mi	Mount Eden, KY

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 40020, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 40020. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.