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County ZIP codes · Kentucky · FIPS 21181

Nicholas County, KY ZIP Codes

Nicholas County, Kentucky has 5 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 2 of the residential ones lie mainly in Nicholas County and 3 mainly in a neighboring county; 4 cross the county line. Median household income ranges from $43,607 in 40374 (Sharpsburg) to $64,883 in 41031 (Cynthiana) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Nicholas County?

40311 · Carlisle: $61k40350 · Moorefield: –40374 · Sharpsburg: $44k41031 · Cynthiana: $65k41039 · Ewing: $59k410314031140374410394035040311 · Carlisle: $61k40350 · Moorefield: –40374 · Sharpsburg: $44k41031 · Cynthiana: $65k41039 · Ewing: $59k410314031140374410394035040311 · Carlisle: $61k40350 · Moorefield: –40374 · Sharpsburg: $44k41031 · Cynthiana: $65k41039 · Ewing: $59k4103140311403744103940350
The residential ZIP codes of Nicholas 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?

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $43,607 and $61,348.

They carry 5 postal town names: Cynthiana, Carlisle, Ewing, Sharpsburg, Moorefield.

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

All 5 residential ZIP codes in Nicholas County

2 ZIP codes lie mainly in Nicholas County; 3 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Nicholas County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
40311 Carlisle 7,672 45 $61k $130k 89%
40350 Moorefield 73 5 – – 100%

Partly in Nicholas County

Residential ZIP codes mainly in another county that reach at least 1% into Nicholas County, by their share here
In this county
40374 Sharpsburg 2,562 42 $44k $115k 12%
41039 Ewing 2,974 38 $59k $119k 11%
41031 Cynthiana 16,624 74 $65k $212k 6%

Download the 5 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?

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

Share of each ZIP code's land in Nicholas County and in the neighboring counties
ZIPIn NicholasElsewhere
410316%Harrison County 91%; Bourbon County 3%
4031189%Bourbon County 10%
4103911%Fleming County 85%; Mason County 2%; Robertson County 2%
4037412%Bath County 84%; Bourbon County 4%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Nicholas County's ZIP codes use 2 prefixes: 403 and 410.

Three-digit prefixes of Nicholas 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 Nicholas County's
PrefixSectional centerHereAll codes
403 Lexington, KY (SCF 403) 3 47
410 Cincinnati, OH (SCF 450) 2 68

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