ZIP Code 42134

42134 is one of Kentucky's ZIP codes, delivering to addresses in Franklin, Simpson County.

City: Franklin
County: Simpson County
State: Kentucky
Prefix: 421xx

Where this code sits

42134 is part of the 421xx range, the group of codes handled by one mail processing centre. Franklin is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Franklin page.

Franklin Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42134 delivers to without sharing its boundary.

ZIP codes nearest 42134

The ZIP codes whose reference points sit closest to 42134.
ZIP code	Distance	Delivers to
ZIP code 42135	0.5 mi	Franklin, KY
ZIP code 37119	6.7 mi	Mitchellville, TN
ZIP code 42170	9.0 mi	Woodburn, KY
ZIP code 37141	11 mi	Orlinda, TN
ZIP code 37148	12 mi	Portland, TN
ZIP code 37049	13 mi	Cross Plains, TN
ZIP code 42206	14 mi	Auburn, KY
ZIP code 42274	14 mi	Rockfield, 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 42134, plotted from its record coordinates.

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

Scope ZIP code 42134. 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.