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County ZIP codes · Kentucky · FIPS 21141

Logan County, KY ZIP Codes

Logan County, Kentucky has 7 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 5 of the residential ones lie mainly in Logan County and 2 mainly in a neighboring county; 6 cross the county line. Median household income ranges from $57,144 in 42276 (Russellville) to $80,704 in 42274 (Rockfield) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Logan County?

42202 · Adairville: $63k42204 · Allensville: $62k42206 · Auburn: $67k42256 · Lewisburg: $59k42265 · Olmstead: –42274 · Rockfield: $81k42276 · Russellville: $57k4225642276422064226542202422044227442202 · Adairville: $63k42204 · Allensville: $62k42206 · Auburn: $67k42256 · Lewisburg: $59k42265 · Olmstead: –42274 · Rockfield: $81k42276 · Russellville: $57k4225642276422064226542202422044227442202 · Adairville: $63k42204 · Allensville: $62k42206 · Auburn: $67k42256 · Lewisburg: $59k42265 · Olmstead: –42274 · Rockfield: $81k42276 · Russellville: $57k422564227642206422654220242274
The residential ZIP codes of Logan 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 $58,794 and $66,815.

They carry 7 postal town names: Russellville, Auburn, Lewisburg, Rockfield, Adairville, Allensville, Olmstead.

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

All 7 residential ZIP codes in Logan County

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

Residential ZIP codes mainly in Logan County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
42276 Russellville 16,044 78 $57k $167k 100%
42206 Auburn 5,897 52 $67k $168k 86%
42256 Lewisburg 5,124 26 $59k $140k 61%
42202 Adairville 1,958 30 $63k $139k 98%
42265 Olmstead 641 12 – $369k 88%

Partly in Logan County

Residential ZIP codes mainly in another county that reach at least 1% into Logan County, by their share here
In this county
42204 Allensville 725 17 $62k $240k 28%
42274 Rockfield 2,157 53 $81k $182k 11%

Download the 7 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?

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

Share of each ZIP code's land in Logan County and in the neighboring counties
ZIPIn LoganElsewhere
4220686%Simpson County 13%; Warren County 1%
4225661%Butler County 24%; Todd County 12%; Muhlenberg County 2%
4227411%Warren County 89%
4220298%Simpson County 2%
4220428%Todd County 72%
4226588%Todd County 12%

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

Which first three digits do Logan 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 Logan County starts with 422.

Three-digit prefixes of Logan 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 Logan County's
PrefixSectional centerHereAll codes
422 Nashville, TN (SCF 370) 7 36

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