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County ZIP codes · Kentucky · FIPS 21155

Marion County, KY ZIP Codes

Marion County, Kentucky has 11 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 8 of the residential ones lie mainly in Marion County and 3 mainly in a neighboring county; 7 cross the county line. Median household income ranges from $57,243 in 42718 (Campbellsville) to $70,788 in 40069 (Springfield) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Marion County?

40009 · Bradfordsville: $64k40033 · Lebanon: $58k40037 · Loretto: $70k40049 · Nerinx: –40052 · New Hope: $46k40060 · Raywick: $45k40062 · Saint Francis: $53k40063 · Saint Mary: –40069 · Springfield: $71k40328 · Gravel Switch: $45k42718 · Campbellsville: $57k427184006940033403284000940037400604005240009 · Bradfordsville: $64k40033 · Lebanon: $58k40037 · Loretto: $70k40049 · Nerinx: –40052 · New Hope: $46k40060 · Raywick: $45k40062 · Saint Francis: $53k40063 · Saint Mary: –40069 · Springfield: $71k40328 · Gravel Switch: $45k42718 · Campbellsville: $57k427184006940033403284000940037400604005240009 · Bradfordsville: $64k40033 · Lebanon: $58k40037 · Loretto: $70k40049 · Nerinx: –40052 · New Hope: $46k40060 · Raywick: $45k40062 · Saint Francis: $53k40063 · Saint Mary: –40069 · Springfield: $71k40328 · Gravel Switch: $45k42718 · Campbellsville: $57k4271840069400334032840009400374006040052
The residential ZIP codes of Marion 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 $57,243 and $63,889.

They carry 11 postal town names.

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

All 11 residential ZIP codes in Marion County

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

Residential ZIP codes mainly in Marion County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
40033 Lebanon 11,923 85 $58k $174k 98%
40037 Loretto 2,793 56 $70k $215k 88%
40009 Bradfordsville 1,851 29 $64k $67k 73%
40060 Raywick 1,114 27 $45k $159k 100%
40328 Gravel Switch 963 16 $45k $96k 39%
40063 Saint Mary 326 4,347 – – 100%
40062 Saint Francis 280 49 $53k $123k 100%
40049 Nerinx 108 339 – – 100%

Partly in Marion County

Residential ZIP codes mainly in another county that reach at least 1% into Marion County, by their share here
In this county
40052 New Hope 655 29 $46k – 18%
42718 Campbellsville 26,768 101 $57k $171k 13%
40069 Springfield 8,015 42 $71k $194k 2%

Download the 11 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?

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

Share of each ZIP code's land in Marion County and in the neighboring counties
ZIPIn MarionElsewhere
4271813%Taylor County 74%; Green County 7%; Larue County 5%
4003398%Washington County 2%
400692%Washington County 98%
4003788%Nelson County 12%
4000973%Taylor County 21%; Casey County 6%
4032839%Boyle County 34%; Casey County 27%
4005218%Nelson County 45%; Larue County 37%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Marion County's ZIP codes use 3 prefixes: 400, 403 and 427.

Three-digit prefixes of Marion 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 Marion County's
PrefixSectional centerHereAll codes
400 Louisville, KY (SCF 400) 9 54
403 Lexington, KY (SCF 403) 1 47
427 Louisville, KY (SCF 400) 1 38

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