ZIP Code Tabulation Area · Kentucky

ZIP Code 42171: Warren County, KY

ZIP Code 42171 (Warren County, Kentucky) has an estimated 6,723 residents in 2,631 households. The median household income is $70,191, the median home value is $187,500 and the median gross rent is $1,008/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Total population

6,723

Margin of error ±777

Median household income

$70,191

Margin of error ±$7,755

Median home value

$187,500

Margin of error ±$40,252

Median gross rent

$1,008/mo

Margin of error ±$176

Median age

41.3 yrs

Margin of error ±3.9 yrs

Mean travel time to work

29.9 min

Margin of error ±6.9 min

How ZIP 42171 compares with Kentucky and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 4217141.3 yrsKentucky39.1 yrsUnited States38.9 yrs

Median household income

ZIP 42171$70,191Kentucky$63,726United States$80,734

Per capita income

ZIP 42171$32,853Kentucky$35,821United States$44,673

Poverty rate

ZIP 4217110.6%Kentucky16.1%United States12.5%

Unemployment rate

ZIP 421714.3%Kentucky4.9%United States5.2%

Bachelor's degree or higher

ZIP 4217112.3%Kentucky27.6%United States35.7%

Median home value

ZIP 42171$187,500Kentucky$205,600United States$332,700

Median gross rent

ZIP 42171$1,008/moKentucky$967/moUnited States$1,413/mo

Owner-occupied homes

ZIP 4217176.2%Kentucky68.3%United States65.2%

Mean travel time to work

ZIP 4217129.9 minKentucky24.0 minUnited States26.4 min

Worked from home

ZIP 421715.3%Kentucky10.2%United States15.1%

All figures for ZIP 42171

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 42171 — ACS 2020–2024 5-year estimates
Measure	ZIP 42171	Margin of error	Kentucky	United States
Total population	6,723	±777	4,534,824	334,922,499
Median age	41.3 yrs	±3.9 yrs	39.1 yrs	38.9 yrs
Households	2,631	±308	1,814,469	129,227,496
Median household income	$70,191	±$7,755	$63,726	$80,734
Per capita income	$32,853	±$4,125	$35,821	$44,673
Poverty rate	10.6%	±3.5 pts	16.1%	12.5%
Unemployment rate	4.3%	±3.2 pts	4.9%	5.2%
Bachelor's degree or higher	12.3%	±3.1 pts	27.6%	35.7%
Median home value	$187,500	±$40,252	$205,600	$332,700
Median gross rent	$1,008/mo	±$176	$967/mo	$1,413/mo
Owner-occupied homes	76.2%	±6.3 pts	68.3%	65.2%
Mean travel time to work	29.9 min	±6.9 min	24.0 min	26.4 min
Worked from home	5.3%	±2.6 pts	10.2%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 42171
Group	ZIP 42171	Kentucky	United States
White alone, not Hispanic or Latino	90.9%	81.5%	57.4%
Black or African American alone, not Hispanic or Latino	2.5%	7.6%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.2%	0.1%	0.5%
Asian alone, not Hispanic or Latino	0.0%	1.6%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.1%	0.2%
Some other race alone, not Hispanic or Latino	0.1%	0.3%	0.6%
Two or more races, not Hispanic or Latino	3.3%	3.9%	4.3%
Hispanic or Latino (of any race)	2.9%	5.0%	19.3%

Where ZIP 42171 is

State: Kentucky
Main county: Warren County— also overlaps Edmonson County, Barren County
Largest overlapping place: Smiths Grove (1% of the ZIP's land area)
Land area: 103.28 sq mi· about 65 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Warren County

42101 Warren County, KY 42103 Warren County, KY 42104 Warren County, KY 42122 Warren County, KY 42159 Warren County, KY 42170 Warren County, KY 42274 Warren County, KY

See every ZIP code in Kentucky, or compare ZIP 42171 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.