County ZIP codes · Kentucky · FIPS 21065

Estill County, KY ZIP Codes

Estill County, Kentucky has 3 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Estill County and 1 mainly in a neighboring county; 2 cross the county line. Median household income ranges from $37,734 in 40380 (Stanton) to $46,367 in 40336 (Irvine) (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

Where are the ZIP codes of Estill County?

The residential ZIP codes of Estill 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?

40380 · $38k40336 · $46k

They carry 3 postal town names: Irvine, Stanton, Ravenna.

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

All 3 residential ZIP codes in Estill County

2 ZIP codes lie mainly in Estill County; 1 more reaches into it from a neighboring county and follows the first table.

Residential ZIP codes mainly in Estill County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
40336	Irvine	12,718	61	$46k	$122k	94%
40472	Ravenna	1,276	28	$41k	$102k	100%

Partly in Estill County

Residential ZIP codes mainly in another county that reach at least 1% into Estill County, by their share here
						In this county
40380	Stanton	7,100	58	$38k	$135k	8%

Download the 3 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?

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

Share of each ZIP code's land in Estill County and in the neighboring counties
ZIP	In Estill	Elsewhere
40336	94%	Lee County4%; Jackson County2%
40380	8%	Powell County92%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Estill County's ZIP codes use 2 prefixes: 403 and 404.

Three-digit prefixes of Estill 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 Estill County's
Prefix	Sectional center	Here	All codes
403	Lexington, KY (SCF 403)	2	47
404	Lexington, KY (SCF 403)	1	33

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