County ZIP codes · Kentucky · FIPS 21173

Montgomery County, KY ZIP Codes

Montgomery County, Kentucky has 4 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Montgomery County and 2 mainly in a neighboring county; 3 cross the county line. Median household income ranges from $54,128 in 40337 (Jeffersonville) to $57,329 in 40353 (Mount Sterling) (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

Where are the ZIP codes of Montgomery County?

The residential ZIP codes of Montgomery County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

40337 · $54k 40353 · $57k

They carry 4 postal town names: Mount Sterling, Owingsville, Jeffersonville, Means.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 4 residential ZIP codes in Montgomery County

2 ZIP codes lie mainly in Montgomery County; 2 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Montgomery County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
40353	Mount Sterling	22,725	161	$57k	$184k	93%
40337	Jeffersonville	5,244	93	$54k	$153k	100%

Partly in Montgomery County

Residential ZIP codes mainly in another county that reach at least 1% into Montgomery County, by their share here
						In this county
40346	Means	819	43	$31k	–	16%
40360	Owingsville	7,595	51	$55k	$126k	4%

Download the 4 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

3 ZIP codes of Montgomery County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Montgomery County and in the neighboring counties
ZIP	In Montgomery	Elsewhere
40353	93%	Clark County 6%
40360	4%	Bath County 96%
40346	16%	Menifee County 64%; Bath County 20%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Montgomery County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Montgomery County starts with 403.

Three-digit prefixes of Montgomery County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Montgomery County's
Prefix	Sectional center	Here	All codes
403	Lexington, KY (SCF 403)	4	47

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.